WO2018107352A1

WO2018107352A1 - Laser, current adjustment method for laser, and related device and system

Info

Publication number: WO2018107352A1
Application number: PCT/CN2016/109619
Authority: WO
Inventors: 唐熊忻; 邱基斯; 樊仲维; 王昊成; 刘昊; 刘悦亮
Original assignee: 中国科学院光电研究院
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2018-06-21

Abstract

A laser, a current adjustment method for a laser, and a related device and system. The laser comprises: a pump source and a working medium (220), wherein the pump source comprises at least two laser bars of different main wavelengths, a spectrum composed of the at least two laser bars of different main wavelengths is continuous at a specific wavelength range at a temperature T, and at least part of the specific wavelength range is [M-6, M] nanometers, [M-3, M+3] nanometers or [M, M+6] nanometers; and the main wavelength of an absorption spectrum of the working medium (220) is M nanometers, and the working medium is used for absorbing light emitted by the pump source so as to realize photon transition. The laser can be adapted to an environment with a larger temperature change.

Description

Laser, laser current adjustment method and related device and system

Technical field

The present invention relates to the field of laser technologies, and in particular, to a laser, a current adjustment method for a laser, and related devices and systems.

Background technique

In the prior art, the laser amplifier side-pumped by the laser diode array includes a working medium and a pump source surrounding the working medium. The working medium usually adopts a Nd:YAG (Neodymium-doped Yttrium Aluminium Garnet; Nd:Y3Al5O12) crystal rod, and the pump source is composed of a plurality of monochromatic laser bar strips, and the crystal rod is used for absorption pumping. The light emitted by the source and the photon transition.

A drawback in the prior art is that the laser amplifier cannot be adapted to environments with large temperature variations.

Summary of the invention

The technical problem to be solved by the present invention is to provide a current adjustment method for a laser and a laser, and a related device and system, which can adapt to an environment with a large temperature change.

To solve the above technical problem, a technical solution adopted by the embodiment of the present invention is to provide a laser, including:

a pump source comprising at least two laser bars of different dominant wavelengths, the spectrum of the laser bars of the at least two different dominant wavelengths being continuous at a specific wavelength range at a temperature T, at least part of a specific wavelength range being [M -6, M] nano or [M-3, M+3] nanometer or [M, M+6] nanometer;

The working medium, the dominant wavelength of the absorption spectrum is M nanometer, which is used to absorb the light emitted from the pump source and realize photon transition.

Preferably, at least a portion of the specific wavelength range is in the range [M-6, M+6] nanometers or [M -10, M+10] nanometer.

Preferably, the working medium is a Nd:YAG crystal, M=808.

Preferably, when the working medium is an Nd:YAG crystal, M=808, the pump source comprises two kinds of laser bars of different dominant wavelengths, and the specific wavelength range is [802, 808] nanometers. The two different dominant wavelengths are 802 nm and 808 nm, respectively.

Preferably, when the working medium is a Nd:YAG crystal, M=808, the pump source comprises five laser bars of different dominant wavelengths. The specific wavelength range is [795, 815] nanometers. The five different dominant wavelengths are 795 nm, 800 nm, 805 nm, 810 nm and 815 nm, respectively.

Preferably, when the working medium is a Nd:YAG crystal, M=808, the pump source comprises 12 laser bars of different dominant wavelengths. The specific wavelength range is [783,838] nanometers. The 12 different dominant wavelengths are 783 nm, 788 nm, 793 nm, 798 nm, 803 nm, 808 nm, 813 nm, 818 nm, 823 nm, 828 nm, 833 nm and 838 nm.

Preferably, the working medium is a Nd:glass crystal, M=802.

Preferably, when the working medium is Nd:glass crystal, M=802, the pump source comprises 6 laser bars of different dominant wavelengths. The specific wavelength range is [793,818] nanometers. The six different dominant wavelengths are 793 nm, 798 nm, 803 nm, 808 nm, 813 nm and 818 nm, respectively.

Preferably, the pump source comprises at least one laser bar matrix, the stack comprising at least one partition, each partition comprising at least two sets of laser bars, each set of laser bars being at least two laser bars of the same dominant wavelength .

Preferably, the different sets of laser bars are arranged in sequence along the horizontal direction.

Preferably, the same set of laser bars are horizontally pumped.

Preferably, the same set of laser bars are vertically pumped.

Preferably, the pump source comprises at least one laser bar matrix, the stack comprising at least one partition, each partition comprising at least two laser bars of mutually different wavelengths, laser bar vertical pumping arrangement of the same partition .

Preferably, the laser bars on the same section of the working medium are laser bars of the same dominant wavelength.

Preferably, the individual laser bars of the pump source are connected in series.

Preferably, the laser bars of the same dominant wavelength of the pump source are connected in series.

In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is to provide a current adjustment method for the above laser, including:

Obtaining the target output energy of the laser;

Obtaining the operating temperature of the laser;

Querying a relationship between preset output energy and current corresponding to the operating temperature;

According to the relationship between the output energy and the current, the current corresponding to the target output energy is determined, and the current of the laser is adjusted to the determined current.

Preferably, after adjusting the current of the laser to the determined current, the method further includes:

Obtaining the actual output energy of the laser;

When the difference between the actual output energy and the target output energy exceeds a preset threshold, the current of the laser is adjusted according to a preset algorithm according to the actual output energy and the target output energy until the difference between the actual output energy of the laser and the target output energy is less than or equal to Preset threshold.

Obtaining the target output energy of the laser;

Obtaining the actual output energy of the laser;

When the difference between the actual output energy and the target output energy exceeds a preset threshold, the current of the laser is adjusted according to a preset algorithm according to the target output energy and the actual output energy until the difference between the actual output energy of the laser and the target output energy is less than or equal to Preset threshold.

In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is to provide a current adjusting device for the above laser, comprising:

a first acquiring module, configured to acquire a target output energy of the laser;

a second acquiring module, configured to acquire an operating temperature of the laser;

a query module, configured to query a preset output energy and current relationship corresponding to the working temperature;

The first adjusting module is configured to determine a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjust the current of the laser to the determined current.

Preferably, the current adjustment device further comprises:

a third acquiring module, configured to acquire an actual output energy of the laser after the first adjusting module adjusts a current of the laser to the determined current;

The second adjusting module is configured to adjust the current of the laser according to a preset algorithm according to the actual output energy and the target output energy when the difference between the actual output energy and the target output energy exceeds a preset threshold, until the actual output energy of the laser and the target The difference in output energy is less than or equal to a preset threshold.

a second acquiring module, configured to acquire an actual output energy of the laser;

The adjusting module is configured to adjust the current of the laser according to a preset algorithm according to the target output energy and the actual output energy when the difference between the actual output energy and the target output energy exceeds a preset threshold, until the actual output energy of the laser and the target output energy The difference is less than or equal to the preset threshold.

In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is to provide a laser system, including:

The laser comprises: a pump source comprising at least two laser bars of different dominant wavelengths, the spectrum of the laser bars of the at least two different dominant wavelengths being continuous at a specific wavelength range at a temperature T, at least part of a specific wavelength range The range is [M-6, M] nanometer or [M-3, M+3] nanometer or [M, M+6] nanometer; working medium, the dominant wavelength of the absorption spectrum is M nanometer, used to absorb the pump source to emit Light and achieve photon transitions;

a current adjusting device, configured to acquire a target output energy of the laser; acquire an operating temperature of the laser; query a relationship between a preset output energy and a current corresponding to the working temperature; and determine, according to a relationship between the output energy and the current, a corresponding output energy of the target Current, which adjusts the current of the laser to the determined current.

The laser comprises: a pump source comprising at least two laser bars of different dominant wavelengths, the spectrum of the laser bars of the at least two different dominant wavelengths being at a specific wavelength range at temperature T Continuous, at least part of the specific wavelength range is [M-6, M] nanometer or [M-3, M+3] nanometer or [M, M+6] nanometer; working medium, the dominant wavelength of the absorption spectrum is M nanometer For absorbing the light emitted by the pump source and realizing photon transitions;

a current adjustment device for acquiring a target output energy of the laser; acquiring an actual output energy of the laser; and adjusting the target output energy and the actual output energy according to a preset algorithm when the difference between the actual output energy and the target output energy exceeds a preset threshold The current of the laser until the difference between the actual output energy of the laser and the target output energy is less than or equal to a predetermined threshold.

In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is to provide a current adjustment device for the above laser, comprising:

At least one processor;

a memory coupled to at least one processor; wherein

The memory stores a program of instructions executable by the at least one processor, the program of instructions being executed by the at least one processor to cause the at least one processor to:

Obtaining the target output energy of the laser;

Obtaining the operating temperature of the laser;

At least one processor;

a memory coupled to at least one processor; wherein

Obtaining the target output energy of the laser;

Obtaining the actual output energy of the laser;

Compared with the prior art, the embodiments of the present invention include the following beneficial effects:

In the embodiment of the present invention, the dominant wavelength of the working medium is M nanometer, since the pump source includes at least two laser bars of different dominant wavelengths, and the spectrum of the laser bars of the at least two different dominant wavelengths is at the temperature T At least in the wavelength range of [M-6, M] nanometers, the spectrum of the pump source does not drift out of the M nanometer at least when the temperature rises by 18 °C with a temperature shift of 1 °C per 1 °C. Therefore, the laser can at least adapt to the temperature range [T, T + 18] °C. Similarly, when the spectrum of laser bars of at least two different dominant wavelengths is continuous at a temperature T of at least [M-3, M+3] nanometers, the laser can at least adapt to [T-9, T+9 The temperature range of °C; the spectrum of the laser bar of at least two different dominant wavelengths is at least at a temperature T of at least [M, M+6] nanometers, and the laser can at least adapt to [T-18, T] °C this temperature range. Therefore, the laser in the embodiment of the present invention can adapt to environments with large temperature changes, such as on-board and on-board.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

Figure 1 is an absorption spectrum of a Nd:YAG crystal;

2 is a schematic structural view of an embodiment of a laser of the present invention;

Figure 3 is a side elevational view of the embodiment of Figure 2;

4 is a schematic structural view of an embodiment of a laser bar stack 210 of the embodiment shown in FIG. 2;

FIG. 5 is a schematic structural view of an embodiment of a partition of the laser bar stack 210 of the embodiment shown in FIG. 2; FIG.

6 is a schematic structural view of another embodiment of a partition of the laser bar stack 210 of the embodiment shown in FIG. 2;

7 is a schematic flow chart of an embodiment of a current adjustment method of a laser of the present invention;

Figure 8 is a schematic view of a specific application of the embodiment shown in Figure 7;

9 is a schematic flow chart of another embodiment of a current adjustment method of a laser of the present invention;

10 is a schematic structural view of an embodiment of a current adjusting device for a laser of the present invention;

11 is a schematic structural view of another embodiment of a current adjusting device for a laser of the present invention;

Figure 12 is a schematic view showing the structure of an embodiment of the laser system of the present invention;

Figure 13 is a schematic structural view of another embodiment of the laser system of the present invention;

Figure 14 is a schematic structural view of an embodiment of a current adjusting device for a laser of the present invention;

Figure 15 is a schematic structural view of an embodiment of a current adjusting device for a laser of the present invention;

16 is a schematic flow chart of an embodiment of a laser control method of the present invention;

17 is a schematic flow chart of another embodiment of a laser control method of the present invention;

18 is a schematic flow chart of another embodiment of a laser control method of the present invention;

Figure 19 is a schematic structural view of an embodiment of a laser control device of the present invention;

Figure 20 is a schematic structural view of another embodiment of the laser control device of the present invention;

Figure 21 is a schematic structural view of another embodiment of the laser control device of the present invention;

Figure 22 is a block diagram showing the construction of an embodiment of the laser control apparatus of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Further, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

For convenience of description, [A, B] is used to denote greater than or equal to A and less than or equal to B; with [A, B), greater than or equal to A and less than B.

Please refer to FIG. 1. FIG. 1 is an absorption spectrum diagram of a Nd:YAG crystal. As shown in Fig. 1, the absorption spectrum of the Nd:YAG crystal is from 300 nm to 950 nm, but the dominant wavelength is 808 nm, the absorption efficiency of [795 nm, 815 nm] near the main wavelength is high, and the absorption efficiency in other wavelength bands is low. In a laser (such as a laser amplifier), the light emitted by the pump source laser bar contains a spectrum of absorption by Nd:YAG, which Nd:YAG can absorb and achieve photon transitions.

In the prior art, the pump source of the laser amplifier is composed of monochromatic bars, for example, a laser bar with a dominant wavelength of 808 nm, the emission spectrum is located at [808-3, 808+3] nm, and 3 is the line width (full width at half maximum). ), located near the dominant wavelength of the Nd:YAG crystal.

When the temperature of the pump source changes, the emission spectrum of the pump source may drift out of the range of 795 nm to 815 nm, resulting in the Nd:YAG crystal not effectively absorbing the light of the pump source. For example, the emission spectrum of the pump source at 20 ° C is located at 808 ± 3 nm. Generally, the spectrum shifts by 1 nm every time the temperature changes by 3 °. Then, the emission spectrum of the pump source is at 818 nm ± 3 nm at 50 ° C, resulting in the Nd:YAG crystal being ineffective. Absorbing the light from the pump source causes the laser amplifier to fail. It should be noted here that the present invention is concerned with whether the emission spectrum of the pump source is shifted out of the dominant wavelength of the working medium, such as the dominant wavelength of 808 nm of Nd:YAG.

The main inventive idea of the present invention is to provide at least two laser bars of different dominant wavelengths in the pump source, the spectrum of the laser bars of the at least two different dominant wavelengths in the wavelength range near the dominant wavelength of the working medium The spectrum of the continuous, ie pump, source is near the dominant wavelength of the working medium and has a certain linewidth such that, after the temperature change does not exceed the threshold, the spectrum after the drift of the pump source still covers the dominant wavelength of the working medium.

For example, when the working medium is a Nd:YAG crystal, the working medium has a dominant wavelength of 808 nm, then two kinds of dominant wavelength laser bars can be provided, and the spectrum of the composition is at a wavelength of [802,808] nm at a temperature of 25 ° C. The range is continuous, and the two main wavelengths can be 802 nm and 808 nm, respectively. As the temperature increases, the spectrum of the two laser bars, that is, the spectrum of the pump source will drift to long wavelengths, but since the spectral line is 6 nm wide, as long as the temperature rise does not exceed 18 ° C (per temperature Change the 3°C spectral shift 1nm calculation, which is determined by the production characteristics of the laser bar. The laser bar of different manufacturers may be different), the spectrum of the pump source will not drift out of 808nm, so it can adapt to [25,43]°C. This temperature range.

Therefore, in the embodiment of the present invention, a laser is provided, including:

Working medium, the dominant wavelength of the absorption spectrum is M nanometer, used to absorb the light emitted by the pump source And achieve photon transition.

In particular, the laser can be a laser amplifier or a laser oscillator or other laser device that enables photon transitions.

In the present invention, the working medium has a dominant wavelength of M nanometers, since the pump source includes at least two laser bars of different dominant wavelengths (the dominant wavelength of the laser bar is measured at a temperature T), and the at least two different mains The spectrum of the laser bar of the wavelength is continuous at a temperature T at least in the wavelength range of [M-6, M] nanometers, and therefore is calculated by shifting the spectral shift by 1 nm for every 3 °C change in temperature, at least when the temperature rise is 18 °C. The spectrum of the pump source does not drift out of M nanometers, so the laser can at least adapt to the temperature range [T, T+18] °C.

Similarly, when the spectrum of laser bars of at least two different dominant wavelengths is continuous at a temperature T of at least [M-3, M+3] nanometers, the laser can at least adapt to [T-9, T+9 The temperature range of °C; the spectrum of the laser bar of at least two different dominant wavelengths is at least at a temperature T of at least [M, M+6] nanometers, and the laser can at least adapt to [T-18, T] °C this temperature range.

Therefore, the laser of the present invention can be adapted to environments with large temperature variations, such as on-board and on-board. Moreover, the laser of the present invention does not require the use of water cooling technology, and can avoid the problem of increased volume and weight due to water cooling.

Preferably, at least part of the specific wavelength range is [M-6, M+6] nanometers, and the laser can at least adapt to the temperature range of [T-18, T+18] °C, that is, at least 36 degrees. The temperature changes. More preferably, at least part of the specific wavelength range is [M-10, M+10] nanometers, and the laser can at least adapt to the temperature range [T-30, T+30] °C, that is, at least 60 Degree of temperature change.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

Please refer to FIG. 2, FIG. 3 and FIG. 4. FIG. 2 is a schematic structural view of an embodiment of the laser of the present invention, FIG. 3 is a side view of the embodiment shown in FIG. 2, and FIG. 4 is a laser bar of the embodiment shown in FIG. A schematic structural view of one embodiment of a strip stack 210. As shown in FIG. 2 and FIG. 3, the laser 200 includes a pump source and a working medium 220. The pump source includes three laser bar stacks 210, and the three laser bar stacks 210 are disposed around the working medium 220, and the working medium. 220 absorbs the light exiting the stack 210 and effects photon transitions.

The working medium 220 is specifically a Nd:YAG crystal rod having a dominant wavelength of 808 nm. The laser bar array 210 is formed by five laser bars of different dominant wavelengths, and the laser bar can be composed of a plurality of laser diodes. The spectrum of the laser bars of five different dominant wavelengths is continuous in a specific wavelength range at a temperature of 20 ° C, and the specific wavelength range is [795, 815] nm, so the spectral shift of 1 nm per temperature change by 3 nm is calculated, at least in [- In the temperature range of 1,59] °C, the spectrum of the laser bar-stack does not drift out of 808 nm, that is, the laser can at least adapt to the temperature range of [-1, 59] °C.

Specifically, the five different dominant wavelengths are 795 nm, 800 nm, 805 nm, 810 nm, and 815 nm, respectively. Of course, the five different dominant wavelengths may also be other, such as 794 nm, 800 nm, 806 nm, 811 nm, and 816 nm, and the number of dominant wavelengths may not be five, but may be other, for example, three or four or Six kinds of ..., as long as the spectrum of the laser bar of different dominant wavelengths is continuous at a temperature of 20 ° C in a specific wavelength range [795, 815] nm.

As shown in FIG. 4, the laser bar stack 210 may include at least one partition 211, each partition may include at least two sets of laser bars, each set of laser bars being at least two laser bars of the same dominant wavelength. Specifically, the laser bar matrix 210 includes a plurality of partitions I, II, ..., each of which includes five sets of laser bars, A, B, C, D, and E, each set of laser bars being at least two identical masters. Laser bar of wavelength. The main wavelengths of the five groups of laser bars A, B, C, D, and E are 795 nm, 800 nm, 805 nm, 810 nm, and 815 nm, respectively; in the same partition, A, B, C, D, E The group of laser bars are arranged in the horizontal direction in sequence; the laser bars of the same group (for example, group A) are vertically pumped.

Further, as shown in FIG. 2, if the same section of the crystal rod 220 is pumped with a multicolor bar, uneven fluorescence distribution is caused. For example, the same section is pumped with laser bars with dominant wavelengths of 795 nm, 805 nm, and 810 nm, respectively, because the dominant wavelength of the crystal rod 220 is 808 nm, which absorbs more at 805 nm and absorbs less at 795 nm, thus causing The fluorescence distribution is not uniform. Therefore, preferably, the three laser bar arrays 210 are symmetrically disposed with the crystal rod 220 as a central axis, and the laser bars of the same cross section of the crystal rod 220 are laser bars of the same dominant wavelength, for example, all of the groups A. The laser bar makes the fluorescence distribution uniform.

Further, the laser in this embodiment is preferably hermetically disposed and may be filled with nitrogen gas to prevent condensation.

In this embodiment, the dominant wavelength of the working medium is 808 nm, and the spectrum composed of the laser bars of the five different dominant wavelengths of the pump source is continuous at [795, 815] nm at a temperature of 20 ° C, so the temperature changes by 3 When the °C spectrum shifts by 1 nm, the laser can adapt to the temperature range of [-1,59] °C, and can adapt to environments with large temperature changes, such as on-board and on-board. Moreover, the laser of the present embodiment does not require the use of water cooling technology, and the problem of increased volume and weight due to water cooling can be avoided.

This embodiment is described by taking five different dominant wavelengths and a specific wavelength range of [795, 815] nm as an example. In other embodiments, the specific wavelength range may also be other ranges, such as [800, 820] nm, which may be set according to the temperature range to be adapted; the pump source may also be of 2 or 3 or 4 types... Laser bars of different dominant wavelengths are arranged.

For example, the pump source is composed of two different wavelengths of laser light, and the specific wavelength range can be [802,808] nanometers, so that the laser can adapt to the temperature range of [20, 38] °C; specifically, the 2 The different dominant wavelengths can be 802 nm and 808 nm, respectively.

For example, the pump source can also be arranged by 12 different wavelengths of laser light. The specific wavelength range can be [783,838] nanometers, so that the laser can adapt to the temperature range of [-70,95] °C; The 12 different dominant wavelengths can be 783 nm, 788 nm, 793 nm, 798 nm, 803 nm, 808 nm, 813 nm, 818 nm, 823 nm, 828 nm, 833 nm and 838 nm, respectively.

This embodiment is described by taking a working medium as a Nd:YAG crystal as an example. In other embodiments, the working medium can also be other materials capable of absorbing light and effecting photon transitions, such as Nd:glass crystals, having a dominant wavelength of 802 nm at 20 °C. Similarly, at this time, there may be a pump source which is arranged by laser bars of at least two different main wavelengths, and the specific wavelength range may also be differently set according to different requirements. For example, the pump source can include six different wavelengths of laser light, and the specific wavelength range can be [793,818] nanometers, so that the laser can adapt to the temperature range of [-28, 47] °C; specifically, 6 The different dominant wavelengths can be 793 nm, 798 nm, 803 nm, 808 nm, 813 nm and 818 nm, respectively.

The structure of each partition in the laser bar-stack can also be used in other ways. For example, please refer to FIG. 5. FIG. 5 is a schematic structural diagram of an embodiment of a partition of the laser bar array 210 of the embodiment shown in FIG. 2. As shown in FIG. 5, the partition 511 of the laser bar array includes 5 sets of lasers. Bars, each group of laser bars is at least two laser bars of the same dominant wavelength; the laser bars of groups A, B, C, D, and E are sequentially arranged in the horizontal direction, and the laser bars of the same group are horizontally pumped. . Of course, different sets of laser bars can also be arranged in the vertical direction.

For another example, please refer to FIG. 6. FIG. 6 is a schematic structural diagram of another embodiment of a partition of the laser bar stack 210 of the embodiment shown in FIG. 2. As shown in FIG. 6, the partition 611 of the laser bar array includes at least two types of laser bars (specifically, five kinds of laser bars A, B, C, D, and E) having different wavelengths, and the same partition. The laser bar is vertically pumped out.

It can be understood that regardless of the arrangement of the individual laser bars of the pump source, the laser bars can be connected in series to facilitate uniform control of the current of all the laser bars. It is also possible to connect in series between laser bars of the same dominant wavelength.

In the process of using a laser, users often need a laser to achieve the target output energy. Therefore, in the embodiment of the present invention, a current adjustment method of the above laser is also provided. Please refer to FIG. 7. FIG. 7 is a schematic flow chart of an embodiment of a current adjustment method for a laser of the present invention. As shown in FIG. 7, the embodiment includes:

Step 701: Acquire a target output energy of the laser;

The laser may be the laser in the above embodiment. For details, please refer to the above embodiment; or various lasers in the prior art.

The execution body of this embodiment may be a current adjustment device of the laser, and the device may be an external independent device of the laser or a device integrated inside the laser.

The target output energy may be preset by the user, and step 701 may specifically be to read the target output energy of the locally saved laser. Of course, step 701 may specifically receive the target output energy of the laser transmitted by the user in real time.

Step 702: Obtain an operating temperature of the laser.

The working temperature of the laser mainly refers to the temperature of the heat sink of the laser bar when the laser is working. The current adjustment device of the laser may include a temperature sensor, and step 702 may specifically measure the operating temperature of the laser after the temperature of the laser is stabilized.

Since the operating temperature of the laser mainly depends on the working environment, current and power of the laser, the operating temperature of the laser under different conditions can be preset according to experience. Therefore, the user can send the corresponding working temperature according to the current condition, and step 702 can also specifically receive The preset operating temperature sent by the user.

Step 701 and step 702 have no inevitable chronological order.

Step 703: Query a relationship between a preset output energy and a current corresponding to the working temperature;

Since the output energy of the laser is different from the current at different operating temperatures, the relationship between the current and the output energy of the laser can be measured at different operating temperatures before the laser starts to be used onboard or onboard. When the laser is used on airborne or spaceborne, the relationship between current and output energy is queried according to the operating temperature of the laser.

Step 704: Determine a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjust the current of the laser to the determined current.

After the relationship between the output energy and the current is obtained in step 703, the current corresponding to the target output energy may be determined in the relationship, and the current of the laser is adjusted to the determined current. After the current is adjusted, under normal circumstances, the actual output energy of the laser will be close to or even equal to the target output energy preset by the user, thereby satisfying the user's needs.

For ease of understanding, a specific application is exemplified below. Please refer to FIG. 8. FIG. 8 is a schematic diagram of a specific application of the embodiment shown in FIG.

As shown in FIG. 8, the three solid line curves are obtained by the user in advance, and the relationship between the output energy E and the current I when the operating temperature is 100 ° C, 20 ° C, and -60 ° C, respectively. If the user pre-set target output laser energy Eo, the operating temperature of the laser can -60 ℃, the laser is adjusted to the current I _1; when the operating temperature of the laser 20 ℃, the laser is adjusted to the current I ₂ When the laser operating temperature is 100 ° C, the current of the laser is adjusted to I ₃ , so that the output energy of the laser can be consistent at different operating temperatures.

In this embodiment, the relationship between the corresponding current and the output energy is queried according to the operating temperature of the laser, and the current corresponding to the target output energy is determined according to the relationship, and the laser current is adjusted to the determined current, thereby enabling the laser to The target output energy desired by the user is achieved, so that the output energy of the laser is kept stable.

Please refer to FIG. 9. FIG. 9 is a schematic flow chart of another embodiment of a current adjustment method for a laser of the present invention. As shown in FIG. 9, the embodiment includes:

Step 901: Acquire a target output energy of the laser;

The laser may be the laser in the above embodiment. For details, please refer to the above implementation. example.

The target output energy may be preset by the user, and step 901 may specifically be to read the target output energy of the locally saved laser. Of course, step 901 may specifically receive the target output energy of the laser transmitted by the user in real time.

Step 902: Acquire an actual output energy of the laser;

The current adjustment device of the laser may include an energy meter disposed at the output of the laser. Step 902 may specifically measure the actual output energy of the laser after the laser is stabilized.

Step 901 and step 902 have no inevitable chronological order.

Step 903: When the difference between the actual output energy and the target output energy exceeds a preset threshold, adjust the current of the laser according to a preset algorithm according to the target output energy and the actual output energy, until the difference between the actual output energy of the laser and the target output energy The value is less than or equal to the preset threshold.

There are a variety of preset algorithms. This embodiment uses a convergence algorithm as an example. The specific process is as follows:

If the actual output energy E is lower than the target output energy Eo, the current energy is E1, and the current current I1=A, the current is adjusted to the maximum value B, that is, the adjusted current I2=B, and the actual output energy is measured as E2. At this time, E2 must be >Eo, so the current is adjusted to K=A+(BA)/2, and the actual output energy Ek is measured.

1. Determine if |Ek-Eo| is greater than 0.1;

(1) If |Ek-Eo| ≤ 0.1, the operation is ended.

(2) If |Ek-Eo|>0.1

(a) If Ek>Eo, then K=l1+(l2-l1)/2, and measure the actual output energy Ek, perform step 1;

(b) If Ek < Eo, then I1 = K, E1 = E2, I2 = I1 + (l2-I1)/2, l2 is unchanged, the energy value is E2, K = K + (l2-l1)/2, l2 = K measures the energy value as EK, and measures the actual output energy Ek, and performs step 1.

If the actual output energy E is higher than the target output energy Eo, the current energy is E2, and the current current I2=C, the current is adjusted to the minimum value D, that is, the adjusted current I1=D, and the actual output energy is measured as E1. At this time, E1 is necessarily <Eo, so the current is adjusted to K=D+(CD)/2, and the actual output energy Ek is measured.

2. Determine if |Ek-Eo| is greater than 0.1;

(1) If |Ek-Eo| ≤ 0.1, the operation is ended.

(2) If |Ek-Eo|>0.1

(a) If Ek>Eo, then K=l1+(l2-l1)/2, and measure the actual output energy Ek, perform step 2;

(b) If Ek < Eo, then I1 = K, E1 = E2, I2 = I1 + (l2-I1)/2, l2 is unchanged, the energy value is E2, K = K + (l2-l1)/2, l2 = K measures the energy value as EK, and measures the actual output energy Ek, and performs step 2.

In this embodiment, by measuring the actual output energy, and adjusting the current of the laser according to a preset algorithm according to the target output energy and the actual output energy, so that the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold, thereby The laser can achieve the target output energy desired by the user, and the output energy of the laser is stable.

In addition, after adjusting the current of the laser to the determined current in step 704 of the embodiment of FIG. 7, under normal circumstances, the output energy of the laser will become or approach the target output energy as expected, but in some cases, the laser The output energy may also not become or approach the target output energy as expected. Therefore, after adjusting the current of the laser to the determined current in step 704, the actual output energy of the laser may be further obtained; when the difference between the actual output energy and the target output energy exceeds a preset threshold, according to the actual output energy and The target output energy adjusts the current of the laser according to a preset algorithm until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

Corresponding to the embodiment shown in FIG. 7, in the embodiment of the present invention, a current adjustment device for a laser is also provided. Please refer to FIG. 10. FIG. 10 is a schematic structural view of an embodiment of a current adjusting device for a laser of the present invention. As shown in FIG. 10, this embodiment includes:

The first obtaining module 1010 is configured to acquire a target output energy of the laser;

In this embodiment, the laser may be the laser in the above embodiment. For details, please refer to the above embodiment; or various lasers in the prior art.

The target output energy may be preset by the user, and the first acquisition module 1010 may include a reading unit for reading the target output energy of the locally saved laser. The first obtaining module 1010 may further include a receiving unit configured to receive the target output energy of the laser transmitted by the user in real time.

a second obtaining module 1020, configured to acquire an operating temperature of the laser;

The second acquisition module 1020 can include a temperature sensor for measuring the operating temperature of the laser after the laser is turned on. The second obtaining module 1020 may further include a receiving unit configured to receive a preset operating temperature sent by the user.

The query module 1030 is configured to query a relationship between preset output energy and current corresponding to the working temperature;

After the second acquisition module 1020 obtains the operating temperature of the laser, the query module 1030 queries the relationship between the output energy and the current corresponding to the operating temperature.

The first adjusting module 1040 is configured to determine a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjust the current of the laser to the determined current.

The first adjustment module 1040 may determine the current corresponding to the target output energy and perform current adjustment after the query module 1030 queries the relationship between the output energy and the current. After the current is adjusted, under normal circumstances, the actual output energy of the laser will be close to or even equal to the target output energy preset by the user, thereby satisfying the requirements of the user.

However, in some cases, the output energy of the laser may not become as close to or as close to the target output energy as expected. Therefore, preferably, the current adjustment device further comprises:

In this embodiment, the relationship between the corresponding current and the output energy is queried according to the operating temperature of the laser, and the current corresponding to the target output energy is determined according to the relationship, and the laser current is adjusted to the determined current, thereby enabling the laser to Reach the user's desired goal The energy is output to keep the output energy of the laser stable.

Corresponding to the embodiment shown in FIG. 9, in the embodiment of the present invention, another current adjustment device for the laser is also provided. Please refer to FIG. 11. FIG. 11 is a schematic structural view of another embodiment of a current adjusting device for a laser of the present invention. As shown in FIG. 11, the embodiment includes:

a first obtaining module 1110, configured to acquire a target output energy of the laser;

The laser may be the laser in the above embodiment. For details, please refer to the above embodiment.

The target output energy may be preset by the user, and the first acquisition module may specifically include a reading unit for reading the target output energy of the locally saved laser. Of course, the first obtaining module may specifically include a receiving unit for receiving the target output energy of the laser transmitted by the user in real time.

a second obtaining module 1120, configured to acquire an actual output energy of the laser;

The second acquisition module 1120 can include an energy meter disposed at the output of the laser for measuring the actual output energy of the laser after the laser is turned on.

The adjusting module 1130 is configured to adjust the current of the laser according to a preset algorithm according to the target output energy and the actual output energy when the difference between the actual output energy and the target output energy exceeds a preset threshold, until the actual output energy of the laser and the target output The difference in energy is less than or equal to a preset threshold.

There are several preset algorithms, such as a convergence algorithm.

Corresponding to the embodiment shown in Fig. 7, in the embodiment of the invention, a laser system is also provided. Please refer to FIG. 12. FIG. 12 is a schematic structural view of an embodiment of a laser system of the present invention. As shown in FIG. 12, this embodiment includes:

The laser 1210 includes: a pump source including at least two laser bars of different dominant wavelengths, wherein the spectrum of the laser bars of the at least two different dominant wavelengths is continuous at a specific wavelength range at a temperature T, and at least a specific wavelength range Partial range is [M-6, M] nm or [M-3, M +3] nanometer or [M, M+6] nanometer; working medium, the dominant wavelength of the absorption spectrum is M nanometer, used to absorb the light emitted by the pump source and realize photon transition;

The laser 1210 may be the laser in the above embodiment. For details, please refer to the above embodiment.

The current adjusting device 1220 is configured to acquire a target output energy of the laser; acquire an operating temperature of the laser; query a relationship between a preset output energy and a current corresponding to the working temperature; and determine, according to a relationship between the output energy and the current, a target output energy The current of the laser is adjusted to the determined current.

For a detailed description of the current adjustment device 1220, please refer to the description of the embodiment shown in FIGS. 7 and 10.

Corresponding to the embodiment shown in Fig. 9, in the embodiment of the invention, another laser system is also provided. Please refer to FIG. 13, which is a schematic structural view of another embodiment of the laser system of the present invention. As shown in FIG. 13, the embodiment includes:

The laser 1310 includes: a pump source including at least two laser bars of different dominant wavelengths, wherein the spectrum of the laser bars of the at least two different dominant wavelengths is continuous at a specific wavelength range at a temperature T, and at least a specific wavelength range Partial range is [M-6, M] nanometer or [M-3, M+3] nanometer or [M, M+6] nanometer; working medium, the dominant wavelength of the absorption spectrum is M nanometer, used for absorbing pump source The emitted light and the realization of photon transitions;

The laser 1310 may be the laser in the above embodiment. For details, please refer to the above embodiment.

The current adjustment device 1320 is configured to acquire a target output energy of the laser; acquire an actual output energy of the laser; and when the difference between the actual output energy and the target output energy exceeds a preset threshold, according to a preset output energy and an actual output energy according to a preset algorithm The current of the laser is adjusted until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

For a detailed description of the current adjustment device 1320, please refer to the description of the embodiment shown in FIGS. 9 and 11.

Corresponding to the embodiment shown in FIG. 7, in the embodiment of the present invention, a current adjustment device for a laser is also provided. Please refer to FIG. 14, which is a current adjusting device for the laser of the present invention. A schematic structural view of one embodiment. As shown in FIG. 14, the current adjustment device 1400 of the laser includes:

At least one processor 1410, exemplified by a processor 1410 in FIG. 14; and a memory 1420 communicatively coupled to the at least one processor 1410; wherein the memory stores an instruction program executable by the at least one processor, the instruction program being at least A processor executes to enable at least one processor to perform the current adjustment method of the laser of the embodiment of FIG.

The processor 1410 and the memory 1420 may be connected by a bus or other means, and the bus connection is taken as an example in FIG.

The memory 1420 is a non-volatile computer readable storage medium, and can be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, as shown in the current adjustment method of the laser in the embodiment of FIG. Program instructions/modules. The processor 1410 performs various functional applications and data processing of the current adjustment device of the laser by operating non-volatile software programs, instructions, and modules stored in the memory 1420, ie, realizing current adjustment of the laser in the embodiment of FIG. method.

The memory 1420 can include a storage program area and a storage data area, wherein the storage program area can store an operating system, an application required for at least one function; and the storage data area can be created by using the current adjustment method of the laser in the embodiment of FIG. Data, etc. Moreover, memory 1420 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 1420 can include memory remotely located relative to processor 1410, which can be connected to the electronic device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

One or more modules are stored in memory 1420, and when executed by one or more processors 1410, perform a current adjustment method for the laser of the current adjustment device applied to the laser in the embodiment of FIG.

Corresponding to the embodiment shown in FIG. 9, in the embodiment of the present invention, another current adjustment device for the laser is also provided. Please refer to FIG. 15. FIG. 15 is a schematic structural diagram of an embodiment of a current adjusting device for a laser of the present invention. As shown in Figure 15, the current adjustment device of the laser 1500 includes:

At least one processor 1510, exemplified by a processor 1510 in FIG. 15; and a memory 1520 communicatively coupled to at least one processor 1510; wherein the memory stores a program of instructions executable by at least one processor, the program of instructions being at least A processor executes to enable at least one processor to perform the current adjustment method of the laser of the embodiment of FIG.

The processor 1510 and the memory 1520 may be connected by a bus or other means, as exemplified by a bus connection in FIG.

The memory 1520 is a non-volatile computer readable storage medium, and can be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, as shown in the current adjustment method of the laser in the embodiment of FIG. Program instructions/modules. The processor 1510 performs various functional applications and data processing of the current adjustment device of the laser by running non-volatile software programs, instructions, and modules stored in the memory 1520, that is, realizing current adjustment of the laser in the embodiment of FIG. method.

The memory 1520 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; and the storage data area may be created by using the current adjustment method of the laser in the embodiment of FIG. Data, etc. Further, the memory 1520 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device. In some embodiments, memory 1520 can include memory remotely located relative to processor 1510, which can be connected to the electronic device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

One or more modules are stored in the memory 1520, and when executed by the one or more processors 1510, the current adjustment method of the laser applied to the current adjustment device of the laser in the embodiment of Fig. 9 is performed.

Since the dominant wavelength of the absorption spectrum of the working medium of the laser is M nanometer, and the spectrum of the pump source in the laser drifts with temperature, the spectrum of the laser bar of different dominant wavelengths is located at different operating temperatures. M nanometer can be effectively absorbed by the working medium. Therefore The laser bar at the current spectrum at M nanometers can be turned on at the current operating temperature, and other laser bars can be turned off, which can reduce the power consumption of the laser.

Therefore, in the embodiment of the present invention, a laser control method is also provided. Please refer to FIG. 16. FIG. 16 is a schematic flow chart of an embodiment of a laser control method of the present invention. As shown in FIG. 16, this embodiment includes:

Step 1601: Acquire an operating temperature of the laser;

The execution body of this embodiment may be a laser control device, which may be an external independent device of the laser or a module integrated inside the laser.

The working temperature of the laser mainly refers to the temperature of the heat sink of the laser bar when the laser is working.

When the laser is working (all the laser bars of the laser can be turned on at this time, or only part of the laser bar is turned on), the operating temperature of the laser is collected by the temperature sensor in real time.

Since the operating temperature of the laser mainly depends on the working environment, current and power of the laser, the operating temperature of the laser under different conditions can be preset according to experience. Therefore, the user can transmit the corresponding working temperature according to the current condition. In step 1601, the laser control device can also receive the preset operating temperature sent by the user when the laser has not started working.

Step 1602: Query a primary wavelength corresponding to an operating temperature from a correspondence between a preset temperature and a dominant wavelength;

Since the dominant wavelength of the absorption spectrum of the working medium of the laser is M nanometer, and the spectrum of the pump source in the laser drifts with temperature, the spectrum of the laser bar of different dominant wavelengths is located at different operating temperatures. M nanometer can be effectively absorbed by the working medium.

For example, the pump source includes five different primary wavelength laser bars. The five different dominant wavelengths are 795 nm, 800 nm, 805 nm, 810 nm, and 815 nm, respectively. Their spectra are at operating temperature [55 ° C, 70 Located at M nanometers at °C), [40 ° C, 55 ° C), [25 ° C, 40 ° C), [10 ° C, 25 ° C), [-5 ° C, 10 ° C).

Therefore, it is possible to pre-measure which spectrum of the laser bar of the dominant wavelength is located at the M nanometer at different operating temperatures, and preserve the correspondence between the operating temperature and the dominant wavelength of the laser bar.

After the operating temperature is obtained in step 1601, the correspondence between the temperature and the dominant wavelength is Query the dominant wavelength corresponding to the operating temperature. For example, the operating temperature is 50 ° C, and the corresponding dominant wavelength is 800 nm.

Step 1603: Control the laser bar of the main wavelength obtained by querying in the laser in an on state, and all the laser bars except the main wavelength are at least partially in a closed state.

After the main wavelength corresponding to the working temperature is queried, the laser bar of the main wavelength can be controlled to be in an open state, and all or part of all the laser bars except the main wavelength can be controlled to be in a closed state, preferably, All laser bars except the main wavelength are controlled to be off to maximize power consumption. For example, the laser bar with a dominant wavelength of 800 nm is controlled to be turned on, and the laser bar with the dominant wavelengths of 795 nm, 805 nm, 810 nm, and 815 nm is turned off.

In this embodiment, the operating temperature of the laser can be continuously acquired, and the laser bars of different main wavelengths are switched on in an open state as the operating temperature changes. For example, when the laser is used in a spaceborne load, the operating temperature of the laser changes from 20 ° C to 50 ° C as the external environment changes. Then, the laser is switched from the laser bar that opens 810 nm to the laser bar that turns on 800 nm. To achieve adaptation to the external environment.

Since the spectrum of the laser bar of different dominant wavelengths is located at M nanometers at different operating temperatures, it can be effectively absorbed by the working medium. In this embodiment, by obtaining the operating temperature and querying the corresponding dominant wavelength according to the operating temperature, the laser bar of the dominant wavelength in the laser is controlled to be turned on, while the other laser bars are at least partially closed. Compared with the scheme that all the laser bars in the laser are turned on, the embodiment can ensure that the working medium can effectively absorb the light of the laser bar, and effectively reduce the power consumption of the laser.

The embodiment of Figure 16 can be combined with the embodiment of Figure 7 to allow the laser to both reduce power consumption and achieve the desired target output energy. Please refer to FIG. 17, which is a flow chart of another embodiment of the laser control method of the present invention. As shown in FIG. 17, this embodiment includes:

Step 1701: Acquire an operating temperature of the laser;

See step 1601 for a detailed description.

Step 1702: Query a primary wavelength corresponding to an operating temperature from a correspondence between a preset temperature and a dominant wavelength;

See step 1602 for a detailed description.

Step 1703: Control the laser bar of the dominant wavelength obtained by querying in the laser in an on state, and all the laser bars except the main wavelength are at least partially in a closed state;

See step 1603 for details.

Step 1704: Acquire a target output energy of the laser;

See step 701 for details.

In this embodiment, step 1704 is performed after step 1703, but it can be understood that step 1704 can also be performed before step 1701.

Step 1705: Query a relationship between a preset output energy and a current corresponding to the working temperature;

See step 703 for details.

Step 1706: Determine a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjust the current of the laser bar of the main wavelength queried in the laser to the determined current.

See step 704 for a detailed description.

For example, the pump source includes five laser bars of different dominant wavelengths, and the five different dominant wavelengths are 795 nm, 800 nm, 805 nm, 810 nm, and 815 nm, respectively. In step 1702, the main wavelength is 800 nm, and in step 1703, the laser bar with the dominant wavelength of 800 nm is turned on, and the laser bars with the dominant wavelengths of 795 nm, 805 nm, 810 nm, and 815 nm are turned off, in step 1706. The current of the laser bar with a dominant wavelength of 800 nm is adjusted to a determined current.

In this embodiment, after the laser bar of the corresponding dominant wavelength is controlled according to the operating temperature, the relationship between the corresponding preset output energy and the current is queried according to the operating temperature, and the corresponding output energy corresponding to the target is determined according to the relationship. The current is adjusted to the current of the corresponding main wavelength laser bar, so that the laser not only saves power, but also achieves the target output energy desired by the user, and meets the user's needs.

In addition, after the current of the laser bar is adjusted to the determined current in step 1706, the output energy of the laser will normally become or approach the target output energy as expected, but in some cases, the output energy of the laser is also The target output energy may not be as or near as expected. Therefore, after the current of the laser bar is adjusted to the determined current in step 1706, the actual output energy of the laser can be further obtained; the actual output energy and the target are When the difference of the output energy exceeds the preset threshold, the current of the laser is adjusted according to the preset output algorithm according to the actual output energy and the target output energy until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

The embodiment of Fig. 16 can also be combined with the embodiment of Fig. 9 to enable the laser to both reduce power consumption and achieve the desired target output energy. Please refer to FIG. 18. FIG. 18 is a schematic flow chart of another embodiment of a laser control method according to the present invention. As shown in FIG. 18, this embodiment includes:

Step 1801: Acquire an operating temperature of the laser;

See step 1601 for a detailed description.

Step 1802: Query a primary wavelength corresponding to an operating temperature from a correspondence between a preset temperature and a dominant wavelength;

See step 1602 for a detailed description.

Step 1803, controlling the laser bar of the main wavelength obtained by querying in the laser is in an on state, and all the laser bars except the main wavelength are at least partially in a closed state;

See step 1603 for details.

Step 1804: Acquire a target output energy of the laser;

See step 901 for details.

Step 1805, acquiring actual output energy of the laser;

See step 902 for a detailed description.

Step 1806, when the difference between the actual output energy and the target output energy exceeds a preset threshold, according to the target output energy and the actual output energy, the current of the laser beam of the dominant wavelength obtained by querying the laser is adjusted according to a preset algorithm until the The difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

See step 903 for details.

For example, the pump source includes five laser bars of different dominant wavelengths, and the five different dominant wavelengths are 795 nm, 800 nm, 805 nm, 810 nm, and 815 nm, respectively. In step 1802, the main wavelength is 800 nm, and the laser bar with the dominant wavelength of 800 nm is turned on in step 1803, and the laser bars whose main wavelengths are 795 nm, 805 nm, 810 nm, and 815 nm are turned off, in step 1806. Adjust the dominant wavelength to 800 nm according to the preset algorithm The current of the laser bar.

In this embodiment, after the laser bar of the corresponding dominant wavelength is controlled according to the operating temperature, the current of the laser beam of the corresponding dominant wavelength is adjusted according to a preset algorithm until the actual output energy of the laser and the target output energy. The difference is less than or equal to the preset threshold, so that the laser not only saves power, but also achieves the target output energy desired by the user, and meets the user's needs.

In an embodiment of the invention, a laser control device is also provided. Referring to FIG. 19, FIG. 19 is a schematic structural view of an embodiment of a laser control device of the present invention. As shown in FIG. 19, this embodiment includes:

a first obtaining module 1910, configured to acquire an operating temperature of the laser;

See step 1601 for a detailed description.

The first acquisition module may specifically include a temperature sensor for collecting the operating temperature of the laser in real time.

The first query module 1920 is configured to query a primary wavelength corresponding to the working temperature from a correspondence between the preset temperature and the primary wavelength;

See step 1601 for a detailed description.

After the first obtaining module 1910 obtains the working temperature, the first query module queries the main wavelength corresponding to the working temperature from the correspondence between the temperature and the main wavelength.

The control module 1930 is configured to control the laser bar of the main wavelength obtained by querying in the laser in an on state, and all the laser bars except the main wavelength are at least partially in a closed state.

See step 1930 for a detailed description.

After the first query module 1920 queries the main wavelength, the control module 1930 controls the laser bar of the main wavelength to be in an on state, and controls other laser bars to be all closed or partially closed.

Corresponding to the embodiment shown in Fig. 17, in the embodiment of the invention, another embodiment of the laser control device is also provided. Referring to FIG. 20, FIG. 20 is a schematic structural view of another embodiment of the laser control device of the present invention. As shown in FIG. 20, the embodiment includes:

The first obtaining module 2010 is configured to acquire an operating temperature of the laser;

The first query module 2020 is configured to query a primary wavelength corresponding to the working temperature from a correspondence between the preset temperature and the primary wavelength;

The control module 2030 is configured to control the laser bar of the main wavelength obtained by querying in the laser in an on state, and all the laser bars except the main wavelength are at least partially in a closed state;

a second obtaining module 2040, configured to acquire a target output energy of the laser;

The second query module 2050 is configured to query a preset output energy and current relationship corresponding to the working temperature;

The first adjusting module 2060 is configured to determine a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjust the current of the laser bar of the main wavelength queried in the laser to the determined current.

Preferably, the embodiment may further include: a third acquiring module, configured to acquire an actual output energy of the laser; and a second adjusting module, configured to: when the difference between the actual output energy and the target output energy exceeds a preset threshold, according to the target The output energy and the actual output energy are adjusted according to a preset algorithm to adjust the current of the laser beam of the dominant wavelength obtained by the laser until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

Corresponding to the embodiment shown in Fig. 18, in the embodiment of the invention, another embodiment of the laser control device is also provided. Please refer to FIG. 21. FIG. 21 is a schematic structural view of another embodiment of the laser control apparatus of the present invention. As shown in FIG. 21, this embodiment includes:

a first obtaining module 2110, configured to acquire an operating temperature of the laser;

The first query module 2120 is configured to query from a correspondence between a preset temperature and a dominant wavelength The dominant wavelength corresponding to the operating temperature;

The control module 2130 is configured to control the laser bar of the main wavelength obtained by querying in the laser in an on state, and all the laser bars except the main wavelength are at least partially in a closed state;

a fourth obtaining module 2140, configured to acquire a target output energy of the laser;

a fifth obtaining module 2150, configured to acquire an actual output energy of the laser;

The third adjusting module 2160 is configured to adjust, according to the target output energy and the actual output energy, the laser bar of the dominant wavelength obtained by querying the laser according to the preset algorithm when the difference between the actual output energy and the target output energy exceeds a preset threshold. The current until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

Corresponding to the embodiment shown in FIG. 16, in the embodiment of the present invention, another laser system is further provided, the laser system comprising:

The control device acquires the working temperature of the laser; queries the main wavelength corresponding to the working temperature from the correspondence between the preset temperature and the main wavelength; and controls the laser bar of the main wavelength obtained by querying the laser in the on state except the main wavelength All laser bars outside are at least partially closed.

Preferably, the control device is further configured to acquire a target output energy of the laser; query a relationship between the preset output energy and the current corresponding to the working temperature; and determine a current corresponding to the target output energy according to the relationship between the output energy and the current, and the laser The current of the laser beam of the dominant wavelength obtained in the query is adjusted to the determined current. Further, the control device is also used to After the current of the laser beam of the main wavelength obtained by the laser is adjusted to the determined current, the actual output energy of the laser is obtained; when the difference between the actual output energy and the target output energy exceeds a preset threshold, the target output energy is The actual output energy is adjusted according to a preset algorithm to adjust the current of the laser beam of the dominant wavelength obtained in the laser until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

Alternatively, the control device is further configured to acquire a target output energy of the laser; acquire an actual output energy of the laser; and when the difference between the actual output energy and the target output energy exceeds a preset threshold, according to the target output energy and the actual output energy, according to the preset The algorithm adjusts the current of the laser beam of the main wavelength obtained by querying in the laser until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.

Preferably, laser bars of the same dominant wavelength are connected in series in the laser so that the control device controls the currents of the laser bars of different dominant wavelengths, respectively.

Corresponding to the embodiment shown in FIG. 16, in the embodiment of the present invention, a laser control device is also provided. Referring to FIG. 22, FIG. 22 is a schematic structural view of an embodiment of a laser control apparatus of the present invention. As shown in FIG. 22, the laser control device 2200 includes:

At least one processor 2210, exemplified by a processor 2210 in FIG. 22; and a memory 2220 communicatively coupled to the at least one processor 2210; wherein the memory stores an instruction program executable by the at least one processor, the instruction program being at least A processor executes to enable at least one processor to perform the laser control method of the embodiment of Figure 16.

The processor 2210 and the memory 2220 may be connected by a bus or other means, as exemplified by a bus connection in FIG.

The memory 2220 is a non-volatile computer readable storage medium and can be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions corresponding to the laser control method in the embodiment of FIG. / module. The processor 2210 performs various functional applications and data processing of the laser control device by executing non-volatile software programs, instructions, and modules stored in the memory 2220, i.e., implementing the laser control method of the embodiment of Fig. 16.

The memory 2220 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; and the storage data area may be stored. The data created by the use of the laser control method in the embodiment of Fig. 16 is stored. Moreover, memory 2220 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 2220 can include memory remotely located relative to processor 2210, which can be connected to the electronic device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

One or more modules are stored in the memory 2220, and when executed by the one or more processors 2210, the laser control method applied to the laser control device in the embodiment of Fig. 16 is performed.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A laser characterized by comprising:

a pump source comprising at least two laser bars of different dominant wavelengths, the spectrum of the laser bars of the at least two different dominant wavelengths being continuous at a specific wavelength range at a temperature T, at least part of a specific wavelength range being [M -6, M] nano or [M-3, M+3] nanometer or [M, M+6] nanometer;

The working medium, the dominant wavelength of the absorption spectrum is M nanometer, for absorbing the light emitted by the pump source and realizing photon transition.
The laser of claim 1 wherein at least a portion of the particular wavelength range is [M-6, M+6] nanometers or [M-10, M+10] nanometers.
The laser of claim 1 wherein said working medium is a Nd:YAG crystal and M = 808.
The laser according to claim 3, wherein said pump source comprises two laser bars of different dominant wavelengths, the specific wavelength range being [802, 808] nanometers.
The laser according to claim 4, wherein the two different dominant wavelengths are 802 nm and 808 nm, respectively.
The laser of claim 3 wherein said pump source comprises five laser bars of different dominant wavelengths.
The laser of claim 6 wherein the specific wavelength range is [795, 815] nanometers.
The laser according to claim 7, wherein said five different dominant wavelengths are 795 nm, 800 nm, 805 nm, 810 nm and 815 nm, respectively.
The laser of claim 3 wherein said pump source comprises 12 laser bars of different dominant wavelengths.
The laser of claim 9 wherein the specific wavelength range is [783, 838] nanometers.
The laser according to claim 10, wherein said 12 different dominant wavelengths are 783 nm, 788 nm, 793 nm, 798 nm, 803 nm, 808, respectively. Nano, 813 nm, 818 nm, 823 nm, 828 nm, 833 nm and 838 nm.
The laser of claim 1 wherein said working medium is a Nd:glass crystal and M=802.
The laser of claim 12 wherein said pump source comprises six laser bars of different dominant wavelengths.
The laser of claim 13 wherein the specific wavelength range is [793, 818] nanometers.
The laser according to claim 14, wherein said six different dominant wavelengths are 793 nm, 798 nm, 803 nm, 808 nm, 813 nm and 818 nm, respectively.
The laser of claim 1 wherein said pump source comprises at least one laser bar stack, said stack comprising at least one partition, each partition comprising at least two sets of laser bars, each set of laser bars The strip is at least two laser bars of the same dominant wavelength.
The laser according to claim 16, wherein the different sets of laser bars are arranged in a horizontal direction.
The laser of claim 16 wherein the same set of laser bars are horizontally pumped.
The laser of claim 16 wherein the same set of laser bars are vertically pumped.
A laser according to claim 1 wherein said pump source comprises at least one laser bar laminate, said stack comprising at least one partition, each partition comprising at least two laser bars of mutually different wavelengths , the same partition of the laser bar vertical pump arrangement.
The laser according to any one of claims 1 to 20, characterized in that the laser bars in the same section of the working medium are laser bars of the same dominant wavelength.
The laser according to any one of claims 1 to 20, characterized in that the respective laser bars of the pump source are connected in series.
The laser according to any one of claims 1 to 20, characterized in that the laser bars of the same dominant wavelength of the pump source are connected in series.
Current adjustment method for a laser according to any one of claims 1 to 23 The law is characterized by including:

Obtaining a target output energy of the laser;

Obtaining an operating temperature of the laser;

Querying a relationship between a preset output energy and a current corresponding to the operating temperature;

And determining a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjusting the current of the laser to the determined current.
The current adjustment method according to claim 24, further comprising: after adjusting the current of the laser to the determined current, further comprising:

Obtaining an actual output energy of the laser;

When the difference between the actual output energy and the target output energy exceeds a preset threshold, the current of the laser is adjusted according to the preset output algorithm according to the actual output energy and the target output energy until the actual output energy of the laser and the target output The difference in energy is less than or equal to a preset threshold.
A current adjustment method for a laser according to any one of claims 1 to 23, comprising:

Obtaining a target output energy of the laser;

Obtaining an actual output energy of the laser;

When the difference between the actual output energy and the target output energy exceeds a preset threshold, the current of the laser is adjusted according to a preset algorithm according to the target output energy and the actual output energy until the actual output energy of the laser and the target output The difference in energy is less than or equal to a preset threshold.
A current regulating device for a laser according to any one of claims 1 to 23, comprising:

a first acquiring module, configured to acquire a target output energy of the laser;

a second acquiring module, configured to acquire an operating temperature of the laser;

a query module, configured to query a relationship between preset output energy and current corresponding to the working temperature;

And a first adjusting module, configured to determine a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjust a current of the laser to the determined current.
The current regulating device according to claim 27, wherein the device further comprises:

a third acquiring module, configured to acquire an actual output energy of the laser after the first adjusting module adjusts a current of the laser to the determined current;

a second adjusting module, configured to adjust a current of the laser according to a preset algorithm according to the actual output energy and the target output energy, when the difference between the actual output energy and the target output energy exceeds a preset threshold, until the laser The difference between the actual output energy and the target output energy is less than or equal to a preset threshold.
A current regulating device for a laser according to any one of claims 1 to 23, comprising:

a first acquiring module, configured to acquire a target output energy of the laser;

a second acquiring module, configured to acquire an actual output energy of the laser;

And an adjusting module, configured to adjust a current of the laser according to a preset algorithm according to the target output energy and the actual output energy, when the difference between the actual output energy and the target output energy exceeds a preset threshold, until the actual The difference between the output energy and the target output energy is less than or equal to a preset threshold.
A laser system, comprising:

The laser comprises: a pump source comprising at least two laser bars of different dominant wavelengths, the spectrum of the laser bars of the at least two different dominant wavelengths being continuous at a specific wavelength range at a temperature T, at least part of a specific wavelength range The range is [M-6, M] nanometer or [M-3, M+3] nanometer or [M, M+6] nanometer; working medium, the dominant wavelength of the absorption spectrum is M nanometer, for absorbing the pump Source of light and photon transitions;

a current adjustment device, configured to acquire a target output energy of the laser; acquire an operating temperature of the laser; query a relationship between a preset output energy and a current corresponding to the working temperature; and according to the relationship between the output energy and the current And determining a current corresponding to the target output energy, and adjusting a current of the laser to the determined current.
A laser system, comprising:

The laser comprises: a pump source comprising at least two laser bars of different dominant wavelengths, the spectrum of the laser bars of the at least two different dominant wavelengths being at a specific wavelength range at temperature T Continuous, at least part of the specific wavelength range is [M-6, M] nanometer or [M-3, M+3] nanometer or [M, M+6] nanometer; working medium, the dominant wavelength of the absorption spectrum is M nanometer , for absorbing light emitted by the pump source and realizing photon transition;

a current adjustment device, configured to acquire a target output energy of the laser; acquire an actual output energy of the laser; and output energy according to the target when a difference between the actual output energy and a target output energy exceeds a preset threshold The actual output energy adjusts the current of the laser according to a preset algorithm until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.
A current regulating device for a laser according to any one of claims 1 to 23, characterized by comprising:

At least one processor;

a memory coupled to the at least one processor; wherein

The memory stores an instruction program executable by the at least one processor, the instruction program being executed by the at least one processor to cause the at least one processor to:

Obtaining a target output energy of the laser;

Obtaining an operating temperature of the laser;

Querying a relationship between a preset output energy and a current corresponding to the operating temperature;

And determining a current corresponding to the target output energy according to the relationship between the output energy and the current, and adjusting the current of the laser to the determined current.
A current regulating device for a laser according to any one of claims 1 to 23, characterized by comprising:

At least one processor;

a memory coupled to the at least one processor; wherein

The memory stores an instruction program executable by the at least one processor, the instruction program being executed by the at least one processor to cause the at least one processor to:

Obtaining a target output energy of the laser;

Obtaining an actual output energy of the laser;

When the difference between the actual output energy and the target output energy exceeds a preset threshold, the current of the laser is adjusted according to a preset algorithm according to the target output energy and the actual output energy. Until the difference between the actual output energy of the laser and the target output energy is less than or equal to a preset threshold.