CN109244821B - Laser and laser generation method - Google Patents
Laser and laser generation method Download PDFInfo
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- CN109244821B CN109244821B CN201811328291.1A CN201811328291A CN109244821B CN 109244821 B CN109244821 B CN 109244821B CN 201811328291 A CN201811328291 A CN 201811328291A CN 109244821 B CN109244821 B CN 109244821B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
- H01S3/2383—Parallel arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
Abstract
The embodiment of the application provides a laser and a laser generation method, and relates to the technical field of photoelectricity. The laser includes: the optical fiber coupler comprises a controller, M paths of light source modules connected with the controller and a beam combiner connected with the M paths of light source modules, wherein M is an integer larger than 1. The controller is used for sending a corresponding pulse control signal set to each path of light source module in the M paths of light source modules; each path of light source module is used for outputting one path of laser pulse according to the corresponding pulse control signal set, and M paths of light source modules output M paths of laser pulses together; the beam combiner is used for combining the received M paths of laser pulses to obtain and output one path of output laser pulse meeting the preset requirement. By adopting the corresponding combination mode for the M pulses, the capability of outputting the laser pulses can be the sum of the energy of the M pulses, the energy, the average power and the duration of the output laser pulses are greatly improved, and the use requirements can be met.
Description
Technical Field
The application relates to the field of photoelectric technology, in particular to a laser and a laser generation method.
Background
The pulse fiber laser has the advantages of high flexibility, no maintenance, low energy consumption, high beam quality and the like, and is widely applied to the application fields of material surface processing, thin metal cutting/welding and the like.
At present, the average power of the pulse fiber laser can reach 100-. However, as the industry technology develops, the pulse fiber laser needs to provide larger average power, larger pulse energy and longer pulse width to meet the higher use requirement. The average power, pulse energy and pulse width of the current pulse optical fiber laser can not meet the use requirement gradually.
Disclosure of Invention
The application aims to provide a laser and a laser generation method, which can effectively improve the power, pulse energy and pulse width of a pulse fiber laser in the prior art.
In order to achieve the above object, embodiments of the present application are implemented as follows:
in a first aspect, an embodiment of the present application provides a laser, including: the device comprises a controller, M paths of light source modules connected with the controller and a beam combiner connected with the M paths of light source modules, wherein M is an integer larger than 1. The controller is used for sending a corresponding pulse control signal set to each path of light source module in the M paths of light source modules; each path of light source module is used for outputting a path of laser pulse according to a corresponding pulse control signal set, and the M paths of light source modules output M paths of laser pulses together; and the beam combiner is used for combining the received M paths of laser pulses to obtain and output one path of output laser pulse meeting the preset requirement.
With reference to the first aspect, in some optional implementations, the controller includes: the light source module comprises a main control circuit, a pulse control circuit connected with the main control circuit and the M light source modules, and a drive control circuit connected with the main control circuit and the M light source modules. The main control circuit is used for generating M pulse signal data and N driving signal data, sending the M pulse signal data to the pulse control circuit, and sending the N driving signal data to the driving control circuit; the pulse control circuit is used for generating M pulse control signals in a one-to-one correspondence mode according to the M pulse signal data and sending the M pulse control signals to the M paths of light source modules in a one-to-one correspondence mode; the drive control circuit is used for generating N pulse drive signals according to the generated data corresponding to the N drive signal data one by one and sending the N pulse drive signals to the M paths of light source modules.
With reference to the first aspect, in some optional implementations, each light source module includes: the optical fiber laser comprises a seed source laser and an N-stage amplifier connected between the seed source laser and the beam combiner in series, wherein N is an integer larger than 0. And the seed source laser is used for outputting a path of source laser pulse based on the pulse control signal in the pulse control signal set. And the N-stage amplifier is used for carrying out N-stage amplification on the source laser pulse according to N pulse driving signals in the pulse control signal set to obtain a path of laser pulse.
With reference to the first aspect, in some optional implementation manners, when the N-stage amplifier is a 1-stage amplifier, the N pulsed driving signals are 1 pulsed driving signal, and the driving control circuit is configured to send the pulsed driving signals to the amplifier of each light source module.
With reference to the first aspect, in some optional implementation manners, when the N-stage amplifier is at least two-stage amplifiers, the N pulse driving signals are at least two pulse driving signals, the driving control circuit is configured to send an ith pulse driving signal of the N pulse driving signals to an ith stage amplifier of each light source module, and i is a positive integer not greater than N.
With reference to the first aspect, in some optional implementations, a1 st amplifier of the N-stage amplifiers is configured to generate a pump laser according to a1 st pulse driving signal to amplify the source laser pulse and output a1 st amplified source laser pulse; and the ith amplifier except the 1 st amplifier in the N-stage amplifiers is used for generating pumping laser according to the ith pulse driving signal, amplifying the source laser pulse output by the ith-1 st amplifier and amplified for the ith-1 st time and outputting the source laser pulse amplified for the ith time.
With reference to the first aspect, in some optional implementations, when the current value of the ith pulse drive signal is equal to or greater than the drive current value of the ith stage amplifier that obtains the ith pulse drive signal: n drive current values of the N-stage amplifiers are the same, and N current values of the corresponding N pulse drive signals are the same; each two of N driving current values of the N-stage amplifier are different, and the current values of each two of the corresponding N pulse driving signals are different; the N drive current values of the N-stage amplifiers are partially the same, and the N current values of the corresponding N pulse drive signals are at least partially the same.
In some alternative implementations in combination with the first aspect, the core diameter of each optical fiber connected to the ith stage of amplifier increases based on an increase in the number of stages of the ith stage of amplifier.
With reference to the first aspect, in some optional implementations, a time period during which each of the N stages of amplifiers generates the pump laser light includes a time period during which each stage of amplifier obtains the source laser light pulse.
In some alternative implementations in combination with the first aspect, an opto-isolator is connected in series across each amplifier stage.
With reference to the first aspect, in some optional implementations, the optical isolator is an isolator or an acousto-optic modulator.
With reference to the first aspect, in some optional implementations, each pulse control signal of the M pulse control signals includes: a waiting time, a pulse delay time and a pulse signal. The controller is further configured to output the M pulse control signals to the M light source modules in a one-to-one correspondence at M first moments, where the M first moments are the same moment or at least part of the M first moments are the same moment; each path of light source module is further used for obtaining each pulse control signal at each second moment and obtaining the waiting duration; when each path of light source module waits from each second time to each third time according to the waiting time, each path of light source module is further used for obtaining the pulse delay time, wherein the M third times corresponding to the M paths of light source modules are the same time; and when each path of light source module waits from each third moment to a fourth moment according to the pulse delay time length, each path of light source module is further used for outputting the path of laser pulse at each time according to the pulse signal and the N pulse driving signals.
With reference to the first aspect, in some optional implementation manners, the beam combiner is further configured to receive each laser pulse at each fifth time corresponding to each fourth time sent by each laser pulse, and synthesize M fifth times according to the M fifth times, to obtain and output the output laser pulse with one path of pulse average power within a preset average power range and/or pulse duration within a preset duration, where the pulse average power within the preset average power range and/or the pulse duration within the preset duration indicates that the output laser pulse meets the preset requirement.
With reference to the first aspect, in some optional implementation manners, the M laser pulses have M timings corresponding to the M fourth timings, and the beam combiner is further configured to superimpose the M laser pulses according to the M timings to obtain the output laser pulse.
With reference to the first aspect, in some optional implementations, the preset average power range includes: 0Kw-6Kw, the pulse duration comprising: 0ns-10 us.
With reference to the first aspect, in some optional implementations, the beam combiner is a 3-in-1 beam combiner, a 4-in-1 beam combiner, a 7-in-1 beam combiner, a 19-and-1 beam combiner, or a 37-and-1 beam combiner.
With reference to the first aspect, in some optional implementations, the laser further includes: a connector connected with the combiner; the connector is configured to output the received output laser pulse to an external device.
With reference to the first aspect, in some optional implementations, the laser further includes: the communication interface is respectively connected with the controller and external equipment; the communication interface is used for establishing communication connection between the controller and the external equipment.
In a second aspect, an embodiment of the present application provides a laser generation method, which is applied to a laser, where the laser includes: the optical fiber coupler comprises a controller, M paths of light source modules connected with the controller, and a beam combiner connected with the M paths of light source modules, wherein the method comprises the following steps: the controller sends a corresponding pulse control signal set to each path of light source module in the M paths of light source modules; each path of light source module outputs one path of laser pulse according to the corresponding pulse control signal set, and the M paths of light source modules output M paths of laser pulses together; and the beam combiner synthesizes the received M paths of laser pulses to obtain and output one path of output laser pulse meeting the preset requirement.
With reference to the second aspect, in some optional implementations, the sending, by the controller, a corresponding set of pulse control signals to each of the M paths of light source modules includes: the controller generates M pulse control signals and generates N pulse driving signals; the controller sends the M pulse control signals to M paths of light source modules in a one-to-one correspondence manner, and sends the N pulse driving signals to each path of light source module in the M paths of light source modules, wherein the pulse control signal set obtained by each path of light source module comprises: a corresponding one of the M pulse control signals and the N pulse drive signals.
With reference to the second aspect, in some optional implementation manners, each of the light source modules outputs one of the laser pulses according to the corresponding pulse control signal set, including: each path of light source module outputs a path of source laser pulse based on the pulse control signal in the pulse control signal set; and each path of light source module performs N-stage amplification on the source laser pulse according to N pulse driving signals in the pulse control signal set to obtain a path of laser pulse.
With reference to the second aspect, in some optional implementations, each pulse control signal includes: waiting time, pulse delay time and pulse signal, every way light source module is based on the concentrated pulse control signal of pulse control signal, outputs a way source laser pulse, includes: the controller outputs the M pulse control signals to the M paths of light source modules in a one-to-one correspondence manner at M first moments, wherein the M first moments are the same moment or at least part of the M first moments are the same moment; each path of light source module obtains a pulse control signal in the pulse control signal set at each second moment and obtains the waiting duration, wherein the pulse control signal is a corresponding one of the M pulse control signals; when each path of light source module waits from each second moment to each third moment according to the waiting duration, each path of light source module obtains the pulse delay duration, wherein M third moments corresponding to the M paths of light source modules are the same moment; and when each path of light source module waits from each third moment to a fourth moment according to the pulse delay time length, each path of light source module outputs the path of laser pulse at each time according to the pulse signal and the N pulse driving signals.
With reference to the second aspect, in some optional implementation manners, the combining unit combines the M received laser pulses to obtain and output one output laser pulse that meets a preset requirement, and includes: the beam combiner receives each path of laser pulse at each fifth moment corresponding to each fourth moment sent by each path of laser pulse, and the total M fifth moments are obtained; and the beam combiner synthesizes the received M laser pulses according to the M fifth moments to obtain and output the output laser pulses with one path of pulse average power within a preset average power range and/or pulse duration within a preset duration, wherein the pulse average power within the preset average power range and/or the pulse duration within the preset duration indicates that the output laser pulses meet the preset requirements.
In a third aspect, the present application provides a computer-readable storage medium having non-volatile program code executable by a processor, where the program code causes the processor to execute the laser generation method according to the second aspect and any implementation manner of the second aspect.
The beneficial effects of the embodiment of the application include:
the controller can send a corresponding pulse control signal set to each light source module, so that each light source module can output one path of laser pulse according to the corresponding pulse control signal set, and the beam combiner can synthesize the received M paths of laser pulses to obtain one path of output laser pulse. Because the output laser pulse is obtained by combining the M pulses of the M paths of laser pulses, the capability of outputting the laser pulse can be the sum of the energies of the M pulses by adopting a corresponding combination mode for the M pulses, the average power of the output laser pulse can also be obtained by combining the average powers based on the M pulses, and the duration of the output laser pulse can also be obtained by combining the durations based on the M pulses, thereby greatly improving the energy, the average power and the duration of the output laser pulse and enabling the output laser pulse to meet the use requirement.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 illustrates a first structural block diagram of a laser provided in an embodiment of the present application;
fig. 2 shows a second structural block diagram of a laser provided in an embodiment of the present application;
fig. 3 shows a block diagram of a structure of each light source module in a laser according to an embodiment of the present disclosure;
fig. 4 is a first schematic diagram illustrating a laser device synthesizing laser pulses according to an embodiment of the present disclosure;
fig. 5 is a second schematic diagram illustrating a laser device synthesizing laser pulses according to an embodiment of the present disclosure;
fig. 6 is a third schematic diagram illustrating a laser device synthesizing laser pulses according to an embodiment of the present disclosure;
fig. 7 is a flowchart illustrating a laser generation method provided by an embodiment of the present application;
fig. 8 shows a sub-flowchart of step S100 in a laser generating method provided in an embodiment of the present application;
fig. 9 shows a sub-flowchart of step S200 in a laser generation method provided in an embodiment of the present application;
fig. 10 shows a sub-flowchart of step S210 in a laser generating method provided in an embodiment of the present application;
fig. 11 shows a sub-flowchart of step S300 in a laser generation method provided in an embodiment of the present application.
Icon: 100-a laser; 110 — a communication interface; 120-a controller; 121-a master control circuit; 122-pulse control circuitry; 123-a drive control circuit; 130-a light source module; 131-a seed source laser; 132-an amplifier; 133-an optical isolator; 140-a combiner; 150-connector.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without inventive step, are within the scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, some embodiments of the present application provide a laser 100, the laser 100 including: the optical fiber module comprises a communication interface 110, a controller 120, an M-path light source module 130, a beam combiner 140 and a connector 150, wherein M is an integer greater than 1.
The communication interface 110 may be connected to the controller 120 and an external device, respectively, the controller 120 may be connected to the M-channel light source module 130, and the beam combiner 140 may be connected to the M-channel light source module 130 and the connector 150, respectively.
In this embodiment, the controller 120 may be configured to send a corresponding set of pulse control signals to each of the M light source modules 130.
In the M light source modules 130, each light source module 130 may be configured to output one laser pulse according to the corresponding pulse control signal set, and then the M light source modules 130 output M laser pulses in total.
The beam combiner 140 may be configured to combine the M received laser pulses to obtain and output one output laser pulse that meets a preset requirement.
The components in the laser 100 of the present application will be described in detail below with reference to fig. 1 to X.
The communication interface 110 may be a conventional communication serial port circuit, such as an ethernet interface circuit, an RS232 communication serial port circuit, or an RS485 communication serial port circuit, and for example, the detailed model of the communication interface 110 may also be RS 232. The communication interface 110 may be used to establish a communication connection between the controller 120 and an external device, and of course, the communication connection between the controller 120 and the external device may satisfy a corresponding communication protocol, for example, an ethernet protocol, an RS232 communication protocol, an RS485 communication protocol, and/or a handshake protocol between devices, and the like.
Based on the data transmission of the communication interface 110, the communication interface 110 may transmit data or control signals sent by an external device to the controller 120, so as to enable the controller 120 to configure according to the data or perform corresponding control operations according to the control signals. Of course, the communication interface 110 also uploads data sent by the controller 120 to an external device.
As shown in fig. 2, the controller 120 may include: a main control circuit 121, a pulse control circuit 122, and a drive control circuit 123. The main control circuit 121 may be connected to the communication interface 110, the pulse control circuit 122, and the driving control circuit 123, respectively, and both the pulse control circuit 122 and the driving control circuit 123 may be connected to the M-channel light source module 130.
The master control circuit 121 may be an integrated circuit chip with signal processing capability, for example, the master control circuit 121 may be a general-purpose processor, for example, including: a Central Processing Unit (CPU), a Network Processor (NP), a single chip, and the like, and for example, the model of the main control circuit 121 may be STM32_ FPGA _ CTRV 1.5.
The storage medium of the main control circuit 121 stores a control program, after the I/O port of the main control circuit 121 communicates with the external device through the communication interface 110, the control program in the main control circuit 121 may be configured or updated by the external device, and the main control circuit 121 may also obtain a control instruction sent by the external device through the communication interface 110 to execute the control program in the storage medium.
As some embodiments, the control program stored in the main control circuit 121 may include a program for generating laser pulses and driving the laser pulses, and then the main control circuit 121 executes the program for generating laser pulses and driving the laser pulses under the control of an external device or the main control circuit 121 automatically runs the control program, so that the main control circuit 121 may generate M pulse signal data according to the execution of the program for generating the laser pulses and may generate N driving signal data according to the execution of the program for driving the laser pulses, where N may be an integer greater than 1. Furthermore, the I/O port of the main control circuit 121 communicates with the pulse control circuit 122 and the driving control circuit 123, and the main control circuit 121 may send M pulse signal data to the pulse control circuit 122, so that the pulse control circuit 122 correspondingly generates M pulse control signals based on the M pulse signal data; and the main control circuit 121 may further send the N driving signal data to the driving control circuit 123, so that the driving control circuit 123 may correspondingly generate N driving signals according to the N driving signal data.
61 it is to be understood that, among the M pulse control signals, each pulse control signal may include: a waiting time, a pulse delay time and a pulse signal. Therefore, each pulse signal data correspondingly defines the length of the waiting time length, the length of the pulse delay time length and the signal waveform of the pulse signal in each pulse control signal. Since each pulse signal data can be generated based on the program operation for generating the laser pulse, when the program for generating the laser pulse is edited, the program for generating the laser pulse can be configured according to actual requirements, so that the length of the waiting time of each pulse control signal, the length of the pulse delay time and the signal waveform of the pulse signal can be enabled to be completely different or at least partially the same, and the lengths of the waiting time of the M pulse control signals, the lengths of the pulse delay times and the signal waveform lengths of the pulse signals of the signal waveforms of the pulse signals can be enabled to be completely different or at least partially the same. The signal waveform of the pulse signal can be a square wave, a triangular wave, a sine-cosine wave or other irregular waveforms.
It will also be appreciated that, of the N drive signals, each drive signal may contain a current value for driving. Therefore, the current value of each driving signal is correspondingly defined by each driving signal data. Since each driving signal data can be generated based on the program operation for driving the laser pulse, when the program for driving the laser pulse is edited, the program for driving the laser pulse can be configured according to actual requirements, so that the current values of the N pulse driving signals are completely different or at least partially the same.
Referring to fig. 2, the pulse control circuit 122 may also be an integrated circuit chip with signal processing and converting capabilities, and the pulse control circuit 122 may be a digital-to-analog conversion chip, for example, a digital-to-analog conversion chip with model number AD 9708.
After the pulse control circuit 122 obtains the M pulse signal data, the pulse control circuit 122 may perform digital-to-analog conversion on each pulse signal data in the M pulse signal data, so that each pulse control signal after conversion of each pulse signal data may be generated, and M pulse control signals are correspondingly generated. Then, for each generated pulse control signal, the waiting duration, the pulse delay duration and the pulse signal defined by each corresponding pulse signal data may be included in each pulse control signal.
In this embodiment, the M pulse signal data may further define a first time for sending each pulse control signal of the M pulse control signals, and define M first times in total.
As some embodiments, since the first time for sending the pulse control signal is different and the optical path difference is eliminated by the waiting time length subsequently, and the M pulse control signals are adjusted to the same time, each first time can be set according to the convenience of control.
If only the influence of the optical path difference is eliminated in the following process, the M first time instants may be defined as the same time instant.
If consideration is given to the fact that the subsequent difference in transmission time and the influence of the optical path difference can be eliminated together, the M first times may be defined as at least partially the same time, for example, the ith first time among the M first times may be defined as time a, and the (i + 1) th first time among the M first times may be defined as time B10 ns after time a.
Thus, the pulse control circuit 122 can transmit the M pulse control signals to the M optical source modules 130 through the I/O ports in a one-to-one correspondence manner at the M first time instants according to the defined M first time instants.
The driving control circuit 123 may also be an integrated circuit chip with signal processing and conversion capabilities, and the driving control circuit 123 may also be a digital-to-analog conversion chip, for example, a digital-to-analog conversion chip with model number AD 7032.
After the driving control circuit 123 obtains the N driving signal data, the driving control circuit 123 may perform digital-to-analog conversion on each driving signal data in the N driving signal data, so as to generate each pulse driving signal after each driving signal data conversion, and correspondingly generate N pulse driving signals in total. Then, for each generated pulse driving signal, the current value defined by each corresponding driving signal data may be included in each pulse driving signal.
In this embodiment, the N driving signal data may further define a time when each pulse driving signal of the N pulse driving signals is transmitted and a time period during which each pulse driving signal lasts, and define N times and N time periods in total. Then the driving control circuit 123 sends each pulse driving signal to each light source module 130 in the M light source modules 130 at each corresponding time according to the N times, and controls each pulse driving signal to act on each light source module 130 at each corresponding time period according to each corresponding time period, so that each light source module 130 can effectively drive the source laser pulse generated by each pulse driving signal in each time period during which each pulse driving signal acts.
It can be understood that, for each light source module 130 in the M light source modules 130, the set of pulse control signals obtained by each light source module 130 includes: a corresponding one of the M pulsed control signals and the N pulsed drive signals.
Referring to fig. 2 and fig. 3, in the M-channel light source modules 130 of the present embodiment, each channel of light source module 130 may be configured to obtain each pulse control signal at each second time and obtain the waiting duration. When each path of light source module 130 waits from each second time to each third time according to the waiting time, each path of light source module 130 is further configured to obtain a pulse delay time, where M third times corresponding to the M paths of light source modules 130 are the same time. And when each light source module 130 waits from each third time to a fourth time according to the pulse delay time, each light source module 130 may further be configured to output one laser pulse at each time according to the pulse signal and the N pulse driving signals.
The principle of each light source module 130 executing the above-mentioned process will be described in detail below.
In the M-path light source modules 130, each path of light source module 130 may include: a seed source laser 131, an N-stage amplifier 132, and an optical isolator 133. In practice, the number of the M-path light source modules 130 may be 5-30, but is not limited thereto.
For the M-channel light source module 130, the pulse control circuit 122 may be connected to M seed source lasers 131 of the M-channel light source module 130, and the driving control circuit 123 may be connected to an N-stage amplifier 132 of each of the M-channel light source modules 130. In each light source module 130, the N-stage amplifier 132 may be connected in series between the seed source laser 131 and the beam combiner 140, and an optical isolator 133 is connected in series across each stage of amplifier 132 in the N-stage amplifier 132.
Each seed source laser 131 may be a laser pulse generator with master oscillator power amplification, for example, each laser pulse generator may be an LC96a1064 model. Each seed source laser 131 may be configured to output one source laser pulse based on a pulse control signal in the set of pulse control signals.
In this embodiment, after the controller 120 outputs the M pulse control signals to the M light source modules 130 at M first time instants in a one-to-one correspondence manner, the seed source laser 131 in each light source module 130 may obtain each corresponding pulse control signal at each second time instant. Since the distance between each light source module 130 of the M light source modules 130 and the controller 120 is not necessarily the same, the optical path difference between each light source module 130 and the controller 120 due to the distance is also not necessarily the same. Thus, each second time instant at which each seed source laser 131 obtains each corresponding pulse control signal is also not necessarily the same.
For the seed source laser 131 of each optical source module 130, it obtains each corresponding pulse control signal at each corresponding second time, and each seed source laser 131 is based on the waiting time length in each pulse control signal, so that no operation may be performed, and the second time to the third time of obtaining each pulse control signal is waited for.
As some embodiments, in order to ensure that each seed source laser 131 can synchronously execute the delay of the emitted laser pulse, so as to control the synthesis manner of each subsequent laser pulse through the delay, each seed source laser 131 may wait to the same time as the third time according to the waiting duration, that is, the M third times corresponding to the M-way light source modules 130 are the same time.
Therefore, in order to ensure that the M third times are the same time, if the M first times are at least partially the same time, the influence of the optical path difference generated by each first time for transmitting each pulse control signal and the optical path of the path traveled after each pulse control signal is transmitted may be considered when setting the waiting time in each pulse control signal.
For example, the ith pulse control signal is emitted at time a and the optical path difference of the ith pulse control signal is 0, and the (i + 1) th pulse control signal is emitted at time B10 ns after the time a for the first time and has an optical path difference of 10ns compared with the ith pulse control signal. Therefore, when the waiting time of the ith pulse control signal is set to 50ns, the waiting time of the (i + 1) th pulse control signal can be set to 30ns, so that the third time when the ith pulse control signal waits until is the same as the third time when the (i + 1) th pulse control signal waits until, wherein i is a positive integer not greater than N.
And if the M first moments are the same, then the influence of the optical path difference generated by the optical path of the path traveled after each pulse control signal is emitted when the waiting time in each pulse control signal is set.
For example, the optical path difference of the ith pulse control signal is 0, and the optical path difference of the (i + 1) th pulse control signal is 10ns compared with the ith pulse control signal. Therefore, when the waiting time of the ith pulse control signal is set to 50ns, the waiting time of the (i + 1) th pulse control signal can be set to 40ns, so that the third time when the ith pulse control signal waits until is ensured to be the same as the third time when the (i + 1) th pulse control signal waits until.
It should be noted that, as some embodiments, if the reason why the M first time instants are defined as different time instants is to eliminate the influence of the optical path difference, the latency time period may not be set in each pulse signal data, and the delay time period and the pulse signal may be set only in each pulse signal data. Since the master controller can eliminate the optical path difference of each pulse control signal when each pulse control signal is sent at each first time, the M seed source lasers 131 can obtain M pulse control signals in a one-to-one correspondence manner at M second times of the same time, and each seed source laser 131 in the M seed source lasers 131 can directly start to delay according to the pulse extension time.
For example, if the ith pulse control signal is transmitted at time a and the optical path difference of the ith pulse control signal is 0, the optical path difference of the (i + 1) th pulse control signal is 10ns compared with the optical path difference of the ith pulse control signal, so that the (i + 1) th pulse control signal can be defined to be transmitted at time B10 ns before the time a. This ensures that the ith pulse control signal and the (i + 1) th pulse control signal are respectively transmitted to the corresponding two seed source lasers 131 at the same second time.
In this embodiment, when each seed source laser 131 waits from each third time to a fourth time based on the pulse delay time, each seed source laser 131 may further drive and generate one source laser pulse having the same waveform as the pulse signal according to the pulse signal in each pulse control signal, and output the one source laser pulse to the N-stage amplifier 132 through an optical fiber.
It will also be appreciated that, for each seed source laser 131, since there is no substantial signal at the wait duration and the pulse delay duration in each pulse control signal, each seed source laser 131 can execute the pulse signal portion of each pulse control signal having a substantial signal at each fourth time instant, so that a corresponding path of source laser pulses can be output.
It will also be appreciated that setting the pulse delay duration of each pulse control signal may be based on how the M laser pulses may be subsequently combined. For example, if M laser pulses are superimposed to increase energy intensity and average power, the delay time of each pulse may be set to be the same or to intersect; if the M paths of laser pulses are arranged to increase the energy intensity and the pulse width, the delay time duration of each pulse can be set to be different and not crossed; if the M laser pulses are superimposed and arranged to increase energy intensity, average power, and pulse width, each pulse delay period may be set such that one portion is not different and does not intersect, and another portion is the same or intersects.
In this embodiment, the N-stage amplifier 132 may be configured to perform N-stage amplification on the source laser pulse according to N pulse driving signals in the pulse control signal set to obtain a path of laser pulse. In practice, the number of the N-stage amplifiers 132 may be 2-5, but is not limited thereto.
In detail, when the N-stage amplifier 132 is the 1-stage amplifier 132, the N pulse driving signals are 1 pulse driving signal accordingly, so that the pump laser 100 in the amplifier 132 of each light source module 130 can generate the pump laser light for amplification under the driving of the pulse driving signal based on the driving control circuit 123 sending the pulse driving signal to the amplifier 132 of each light source module 130. Then, when the amplifier 132 of each light source module 130 obtains one source laser pulse output by the seed source laser 131 of each light source module 130 through the optical fiber, the amplifier 132 of each light source module 130 may amplify the source laser pulse based on the pump laser, so as to obtain an amplified laser pulse. Thus, the amplifier 132 of each light source module 130 can output the laser pulse to the beam combiner 140 through the optical fiber.
When the N-stage amplifier 132 is at least two stages of amplifiers 132, the N pulse driving signals are at least two pulse driving signals, respectively. Thus, based on the driving control circuit 123 sending the N pulsed driving signals to the N-stage amplifiers 132 of each light source module 130, the pump laser 100 in each stage amplifier 132 of each light source module 130 can generate pump laser light for amplification under the driving of each corresponding pulsed driving signal in the N pulsed driving signals.
For the 1 st amplifier 132 of the N-stage amplifiers 132 of each light source module 130, the 1 st amplifier 132 may generate the pump laser light according to the 1 st pulse driving signal of the N pulse driving signals. And when the 1 st-stage amplifier 132 obtains one path of source laser pulse output by the seed source laser 131 of each path of light source module 130 through the optical fiber, the 1 st-stage amplifier 132 may amplify the source laser pulse based on the pump laser, thereby obtaining an amplified laser pulse. Thus, the 1 st stage amplifier 132 can output the laser pulse to the 2 nd stage amplifier 132 of the N stage amplifiers 132 of each light source module 130 through the optical fiber.
For the ith amplifier 132 except for the 1 st amplifier 132 in the N-stage amplifiers 132 of each light source module 130, the ith amplifier 132 may generate the pump laser light according to the ith pulse driving signal in the N pulse driving signals. And, when the i-th stage amplifier 132 obtains the i-1 th amplified source laser pulse output by the i-1 st stage amplifier 132 in the N-th stage amplifier 132 of each light source module 130 through the optical fiber, the i-th stage amplifier 132 may amplify the i-1 th amplified source laser pulse based on the pump laser and output the i-th amplified source laser pulse to the i +1 th stage amplifier 132 in the N-th stage amplifier 132 of each light source module 130 through the optical fiber. However, if the ith stage amplifier 132 is the last stage, i.e., i ═ N, the ith stage amplifier 132 can output the ith amplified laser pulse to the beam combiner 140.
It should be noted that, in order to ensure that each stage of the amplifier 132 can normally amplify the source laser pulse, the time period during which each stage of the amplifier 132 in the N stages of the amplifier 132 receives each pulse driving signal to generate the pump laser may include the time period during which each stage of the amplifier 132 obtains the source laser pulse, so as to ensure that the generated pump laser amplifies the source laser pulse when obtaining the source laser pulse.
It should also be noted that, in order to ensure that each stage of amplifier 132 can normally amplify the source laser pulse, each stage of amplifier 132 may be fully driven, that is, when the current value of the ith pulse driving signal in the N-stage of amplifier 132 is greater than or equal to the driving current value of the ith stage of amplifier 132 for obtaining the ith pulse driving signal.
In this way, if the N drive current values of the N-stage amplifiers 132 are all the same, that is, the drive current value of each amplifier 132 is the same value, the N current values of the N pulse drive signals that drive the N-stage amplifiers 132 may be all the same. For example, the driving current values of the first stage amplifier 132 to the third stage amplifier 132 are all 10mA, and then 3 current values of 3 pulse driving signals may be all 10 mA.
If each of the two current values of the N driving current values of the N-stage amplifier 132 are different, the current values of each of the two corresponding pulse driving signals of the N pulse driving signals may also be different. For example, the driving current values of the first to third stage amplifiers 132 to 132 may be 10mA, 20mA and 30mA, respectively, and then of the 3 pulse driving signals, the current value of the pulse driving signal driving the first stage amplifier 132 may be 10mA, the current value of the pulse driving signal driving the second stage amplifier 132 may be 20mA, and the current value of the pulse driving signal driving the third stage amplifier 132 may be 30 mA.
If the N drive current values of the N-stage amplifier 132 are partially the same, the N current values of the N pulse drive signals that drive the N-stage amplifier 132 may also be partially the same. For example, the driving current values of the first to third stage amplifiers 132 to 132 may be 10mA, 10mA and 30mA, respectively, and then of the 3 pulse driving signals, the current value of the pulse driving signal driving the first stage amplifier 132 and the current value of the pulse driving signal driving the second stage amplifier 132 may be 10mA, but the current value of the pulse driving signal driving the third stage amplifier 132 may be 30 mA.
It is understood that the amplification factor of each stage of amplifier 132 of the N stages of amplifiers 132 to the source laser pulses is not necessarily the same as the amplification factor of each stage of amplifier 132 of the other N stages of amplifiers 132 to the source laser pulses, and the amplification factor of each stage of amplifier 132 may be selected according to the actual situation.
It can be understood that, since each stage of amplifier 132 amplifies the original laser pulse and outputs the amplified laser pulse, the optical fiber connected to the output end of each stage of amplifier 132 can bear larger optical energy, and therefore, in the N-stage amplifier 132, the core diameter of each optical fiber connected to the i-th stage of amplifier 132 increases based on the increase of the number of stages of amplifier 132, wherein the core diameter of the optical fiber whose core diameter increases in sequence can be selected from 7um, 10um, 15um, 20um, 25um, 30um, 40um, 48um, 50um, 80um or 100um core diameter. For example, the output of the first stage amplifier 132 and the input of the first stage amplifier 132 may be connected to 7um, and the output of the second stage amplifier 132 and the input of the third stage amplifier 132 may be connected to 30 um.
In this embodiment, the two ends of each stage of amplifier 132 are both connected in series with an optical isolator 133, so for the N stages of amplifiers 132 of each light source module 130, N +1 optical isolators 133 may be provided in each light source module 130.
The optical isolator 133 in each light source module 130 may be an isolator or an acousto-optic modulator, for example, the isolator may be of the type HP (M) IIT1064, or the acousto-optic modulator may be of the type T-M150-0.4C 2G-3-F2S. The optical isolator 133 in each light source module 130, which is disposed at a corresponding position, can ensure that no reflection is generated in the laser pulse in each light source module 130. For example, the optical isolator 133 connected to the seed source laser 131 in each optical source module 130 can ensure that the source laser pulse emitted from the seed source laser 131 is not reflected by the first stage amplifier 132, and the optical isolator 133 connected to the ith stage amplifier 132 in each optical source module 130 can ensure that the source laser pulse or laser pulse of the ith stage amplifier 132 is not reflected by the i +1 stage amplifier 132 or the beam combiner 140.
With continued reference to fig. 2 and 3, the combiner 140 may be a commercially available conventional pump combiner 140, for example, the combiner 140 may be model MPC-7 x 1-1064/200 w. Optionally, the beam combiner 140 is, but not limited to, a 3-in-1 beam combiner 140, a 4-in-1 beam combiner 140, a 7-in-1 beam combiner 140, 19, and a1 beam combiner 140 or 37 and a1 beam combiner 140 according to the number of the M-path light source modules 130.
In this embodiment, the input end of the beam combiner 140 may be correspondingly connected to the M light source modules 130 through M optical fibers, so that the input end of the beam combiner 140 may obtain and combine M laser pulses output by the M light source modules 130 in a one-to-one correspondence.
In detail, when the M light source modules 130 emit M laser pulses at M fourth times, the beam combiner 140 may receive each laser pulse at each fifth time corresponding to each fourth time that each laser pulse is emitted, and the total M fifth times are total. Since the M laser pulses may have M corresponding time sequences, the beam combiner 140 may superimpose the M laser pulses according to the M corresponding time sequences of the M laser pulses at the M fifth moments, so as to synthesize the M received laser pulses, and output one output laser pulse having a pulse average power within a preset average power range and/or a pulse duration within a preset duration. Wherein the pulse average power is within a preset average power range and/or the pulse duration is within the preset duration, indicating that the output laser pulse meets the preset requirement. In this embodiment, the preset average power range and the pulse duration range may be set according to the number of M light source modules 130 and/or a synthesis manner of M laser pulses, for example, the preset average power range includes: 0Kw-6Kw, the pulse duration includes: 0ns-10us, but not as a limitation.
Referring to fig. 4-6, the composition of the M laser pulses will be described with three assumptions.
As shown in fig. 4, it is assumed that the waiting time period t1 and the pulse delay time period t2 of the pulse control signal a, the pulse width t3 of the pulse signal a, the waiting time period t1 and the pulse delay time period t2 of the pulse control signal B, and the pulse width t3 of the pulse signal B. Then, in the case where the pulse delay time t2 of the pulse control signal a and the pulse control signal B are the same, the output laser pulse C can be obtained by superimposing the laser pulse generated based on the pulse control signal a and the laser pulse generated based on the pulse control signal B. Thus, the pulse width of the output laser pulse C is kept at the pulse width t3, but the average power of the output laser pulse C may be the sum of the average power of the laser pulse generated by the pulse control signal a and the average power of the laser pulse generated based on the pulse control signal B.
As shown in fig. 5, it is assumed that the waiting time period t1 and the pulse delay time period t2 of the pulse control signal a, the pulse width t3 of the pulse signal a, the waiting time period t1 and the pulse delay time period t2 of the pulse control signal B, and the pulse width t3 of the pulse signal B. Then in the case where the pulse delay time period t2 of the pulse control signal B is twice the pulse delay time period t2 of the pulse control signal a, the output laser pulse C can be obtained by arranging the laser pulse generated based on the pulse control signal a and the laser pulse generated based on the pulse control signal B. Thus, the pulse width of the output laser pulse C is increased to be twice the pulse width t4 of the pulse width t3, but the average power of the output laser pulse C may be the same as the average power of the laser pulse generated by the pulse control signal a and the average power of the laser pulse generated based on the pulse control signal B.
As shown in fig. 6, it is assumed that the waiting time period t1 and the pulse delay time period t2 of the pulse control signal a, the pulse width t3 of the pulse signal a, the waiting time period t1 and the pulse delay time period t2 of the pulse control signal B, and the pulse width t3 of the pulse signal B. Then, in the case where the pulse delay time period t2 of the pulse control signal B is 1.5 times the pulse delay time period t2 of the pulse control signal a, the laser pulses generated based on the pulse control signal a and the laser pulses generated based on the pulse control signal B are superimposed and arranged, and the output laser pulses C can be obtained. Thus, the pulse width of the output laser pulse C is increased to 1.5 times the pulse width t4 of the pulse width t3, and the average power of the output laser pulse C may be 1.5 times the average power of the laser pulse generated by the pulse control signal a or the average power of the laser pulse generated based on the pulse control signal B.
With continued reference to fig. 3, after the beam combiner 140 obtains the output laser pulses, the beam combiner 140 may output the output laser pulses to the connector 150 through an optical fiber with a larger core diameter, for example, an optical fiber with a core diameter of 80um, due to the energy and/or average power comparison of the synthesized output laser pulses.
The connector 150 may be a conventional component for interfacing external devices, for example, the connector 150 may be a LLC-M-1080 model high power connector 150. After the connector 150 obtains the output laser pulse output by the beam combiner 140, the connector 150 may output the output laser pulse to the external device again.
Referring to fig. 7, some embodiments of the present application provide a laser generating method, which is applied to a laser 100, and the laser generating method includes: step S100, step S200, and step S300.
Step S100: and the controller sends a corresponding pulse control signal set to each path of light source module in the M paths of light source modules.
Step S200: and each light source module outputs one path of laser pulse according to the corresponding pulse control signal set, and the M paths of light source modules output M paths of laser pulses together.
Step S300: and the beam combiner synthesizes the received M paths of laser pulses to obtain and output one path of output laser pulse meeting the preset requirement.
As shown in fig. 8, the sub-flow of step S100 further includes: step S110 and step S120
Step S110: the controller generates M pulsed control signals and generates N pulsed drive signals.
Step S120: and the controller correspondingly sends the M pulse control signals to the M light source modules one by one. And sending the N pulse driving signals to each of the M light source modules, wherein a set of pulse control signals obtained by each light source module includes: a corresponding one of the M pulse control signals and the N pulse drive signals.
As shown in fig. 9, the sub-flow of step S200 further includes:
step S210: and each path of light source module outputs a path of source laser pulse based on the pulse control signal in the pulse control signal set.
Step S220: and each path of light source module performs N-stage amplification on the source laser pulse according to N pulse driving signals in the pulse control signal set to obtain a path of laser pulse.
As shown in fig. 10, each pulse control signal includes: waiting duration, pulse delay duration and pulse signal, step S210 includes: step S211, step S212, step S213, and step S214.
Step S211: and the controller outputs the M pulse control signals to the M paths of light source modules in a one-to-one correspondence manner at M first moments, wherein the M first moments are the same moment or at least part of the M first moments are the same moment.
Step S212: and each path of light source module obtains one pulse control signal in the pulse control signal set at each second moment and obtains the waiting duration, wherein the pulse control signal is a corresponding one of the M pulse control signals.
Step S213: and when each path of light source module waits from each second moment to each third moment according to the waiting duration, each path of light source module obtains the pulse delay duration, wherein M third moments corresponding to the M paths of light source modules are the same moment.
Step S214: and when each path of light source module waits from each third moment to a fourth moment according to the pulse delay time length, each path of light source module outputs the path of laser pulse at each time according to the pulse signal and the N pulse driving signals.
As shown in fig. 11, step S300 includes: step S310 and step S320.
Step S310: and the beam combiner receives each path of laser pulse at each fifth moment corresponding to each fourth moment transmitted by each path of laser pulse, and the total M fifth moments are obtained.
Step S320: and the beam combiner synthesizes the received M laser pulses according to the M fifth moments to obtain and output the output laser pulses with one path of pulse average power within a preset average power range and/or pulse duration within a preset duration, wherein the pulse average power within the preset average power range and/or the pulse duration within the preset duration indicates that the output laser pulses meet the preset requirements.
It should be noted that, as those skilled in the art can clearly understand, for convenience and brevity of description, the detailed implementation process of the method described above may refer to the corresponding processes of the system, the apparatus and the unit in the foregoing embodiments, and will not be described herein again. As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product.
Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
In summary, the embodiments of the present application provide a laser and a laser generation method. The laser includes: the optical fiber coupler comprises a controller, M paths of light source modules connected with the controller and a beam combiner connected with the M paths of light source modules, wherein M is an integer larger than 1. The controller is used for sending a corresponding pulse control signal set to each path of light source module in the M paths of light source modules; each path of light source module is used for outputting one path of laser pulse according to the corresponding pulse control signal set, and M paths of light source modules output M paths of laser pulses together; the beam combiner is used for combining the received M paths of laser pulses to obtain and output one path of output laser pulse meeting the preset requirement.
The controller can send a corresponding pulse control signal set to each light source module, so that each light source module can output one path of laser pulse according to the corresponding pulse control signal set, and the beam combiner can synthesize the received M paths of laser pulses to obtain one path of output laser pulse. Because the output laser pulse is obtained by combining the M pulses of the M paths of laser pulses, the capability of outputting the laser pulse can be the sum of the energies of the M pulses by adopting a corresponding combination mode for the M pulses, the average power of the output laser pulse can also be obtained by combining the average powers based on the M pulses, and the duration of the output laser pulse can also be obtained by combining the durations based on the M pulses, thereby greatly improving the energy, the average power and the duration of the output laser pulse and enabling the output laser pulse to meet the use requirement.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A laser, comprising: the device comprises a controller, M paths of light source modules connected with the controller and a beam combiner connected with the M paths of light source modules, wherein M is an integer greater than 1;
the controller is used for sending a corresponding pulse control signal set to each path of light source module in the M paths of light source modules;
each path of light source module is used for outputting a path of laser pulse according to a corresponding pulse control signal set, and the M paths of light source modules output M paths of laser pulses together;
the beam combiner is used for combining the received M paths of laser pulses to obtain and output one path of output laser pulse meeting the preset requirement;
wherein, each path of light source module obtains a corresponding pulse control signal in the M pulse control signals of the pulse control signal set, and each pulse control signal includes: waiting time and pulse delay time;
the controller is further configured to output the M pulse control signals to the M light source modules in a one-to-one correspondence at the same time;
the M-path light source module is further configured to receive the M pulse control signals at different times, and wait for the same time according to the waiting time length until the time length of the M pulse control signals reaches the same time length, and then start to delay and output the laser pulse according to the pulse delay time length;
and the controller is used for controlling the length of the waiting time of the pulse control signals, the length of the pulse delay time and the signal waveform of the pulse signals, so that the length of the waiting time of the M pulse control signals, the length of the pulse delay time and the signal waveform length of the pulse signals of the signal waveform of the pulse signals are completely different or at least partially the same.
2. The laser of claim 1, wherein the controller comprises: the driving circuit comprises a main control circuit, a pulse control circuit connected with the main control circuit and the M paths of light source modules, and a driving control circuit connected with the main control circuit and the M paths of light source modules;
the main control circuit is used for generating M pulse signal data and N driving signal data, sending the M pulse signal data to the pulse control circuit, and sending the N driving signal data to the driving control circuit;
the pulse control circuit is used for generating M pulse control signals in a one-to-one correspondence mode according to the M pulse signal data and sending the M pulse control signals to the M paths of light source modules in a one-to-one correspondence mode;
the drive control circuit is used for generating N pulse drive signals according to the generated data corresponding to the N drive signal data one by one and sending the N pulse drive signals to the M paths of light source modules.
3. The laser of claim 2, wherein each light source module comprises: the optical fiber laser comprises a seed source laser and an N-stage amplifier connected between the seed source laser and the beam combiner in series, wherein N is an integer larger than 0;
the seed source laser is used for outputting a path of source laser pulse based on the pulse control signal in the pulse control signal set;
and the N-stage amplifier is used for carrying out N-stage amplification on the source laser pulse according to N pulse driving signals in the pulse control signal set to obtain a path of laser pulse.
4. The laser of claim 3, wherein when the N-stage amplifier is a 1-stage amplifier, the N pulse driving signals are 1 pulse driving signal, and the driving control circuit is configured to send the pulse driving signals to the amplifier of each light source module.
5. The laser as claimed in claim 3, wherein when the N-stage amplifier is at least two-stage amplifier, the N pulse driving signals are at least two pulse driving signals, and the driving control circuit is configured to send the ith pulse driving signal of the N pulse driving signals to the ith stage amplifier of each light source module, where i is a positive integer not greater than N.
6. The laser according to claim 4 or 5,
the 1 st-stage amplifier in the N-stage amplifiers is used for generating pump laser according to the 1 st pulse driving signal to amplify the source laser pulse and outputting the 1 st amplified source laser pulse;
and the ith amplifier except the 1 st amplifier in the N-stage amplifiers is used for generating pumping laser according to the ith pulse driving signal, amplifying the source laser pulse output by the ith-1 st amplifier and amplified for the ith-1 st time and outputting the source laser pulse amplified for the ith time.
7. The laser of claim 6,
when the current value of the ith pulse driving signal is larger than or equal to the driving current value of the ith stage amplifier for obtaining the ith pulse driving signal:
n drive current values of the N-stage amplifiers are the same, and N current values of the corresponding N pulse drive signals are the same; each two of N driving current values of the N-stage amplifier are different, and the current values of each two of the corresponding N pulse driving signals are different; the N drive current values of the N-stage amplifiers are partially the same, and the N current values of the corresponding N pulse drive signals are at least partially the same.
8. A laser generation method, applied to a laser, the laser comprising: the optical fiber coupler comprises a controller, M paths of light source modules connected with the controller, and a beam combiner connected with the M paths of light source modules, wherein the method comprises the following steps:
the controller sends a corresponding pulse control signal set to each path of light source module in the M paths of light source modules;
each path of light source module outputs one path of laser pulse according to the corresponding pulse control signal set, and the M paths of light source modules output M paths of laser pulses together;
the beam combiner synthesizes the received M paths of laser pulses to obtain and output one path of output laser pulse meeting the preset requirement;
wherein, each path of light source module obtains a corresponding pulse control signal in the M pulse control signals of the pulse control signal set, and each pulse control signal includes: waiting time and pulse delay time; the controller sends a corresponding pulse control signal set to each light source module in the M light source modules, including:
the controller outputs the M pulse control signals to the M paths of light source modules in a one-to-one correspondence manner at the same moment;
correspondingly, each path of light source module outputs one path of laser pulse according to the corresponding pulse control signal set, and the M paths of light source modules output M paths of laser pulses in total, including:
the M paths of light source modules receive the M pulse control signals at different moments, wait for the same moment according to the waiting duration, and then start to delay and output the laser pulse according to the pulse delay duration;
and the controller is used for controlling the length of the waiting time of the pulse control signals, the length of the pulse delay time and the signal waveform of the pulse signals, so that the length of the waiting time of the M pulse control signals, the length of the pulse delay time and the signal waveform length of the pulse signals of the signal waveform of the pulse signals are completely different or at least partially the same.
9. The laser generation method of claim 8, wherein the controller sends a corresponding set of pulsed control signals to each of the M-way light source modules, comprising:
the controller generates M pulse control signals and generates N pulse driving signals;
the controller sends the M pulse control signals to M paths of light source modules in a one-to-one correspondence manner, and sends the N pulse driving signals to each path of light source module in the M paths of light source modules, wherein the pulse control signal set obtained by each path of light source module comprises: a corresponding one of the M pulse control signals and the N pulse drive signals.
10. The laser generating method of claim 9, wherein each of the light source modules outputs one of the laser pulses according to a corresponding pulse control signal set, comprising:
each path of light source module outputs a path of source laser pulse based on the pulse control signal in the pulse control signal set;
and each path of light source module performs N-stage amplification on the source laser pulse according to N pulse driving signals in the pulse control signal set to obtain a path of laser pulse.
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| CN113922198B (en) * | 2021-09-22 | 2023-10-03 | 上海飞博激光科技股份有限公司 | Pulse laser beam combining device based on self-adaptive synchronization technology |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057927A (en) * | 1990-07-03 | 1992-01-15 | 中国科学院上海光学精密机械研究所 | Synchronistically automatic control device for laser oscillation amplifier chain |
| EP1298827B1 (en) * | 2001-09-27 | 2006-10-04 | Fujitsu Limited | Optical signal processing system |
| CN106848816A (en) * | 2017-02-08 | 2017-06-13 | 中科先为激光科技（北京）有限公司 | Sequential synthesizes quasi-continuous optical fiber laser |
| US9735537B1 (en) * | 2016-04-12 | 2017-08-15 | Northrop Grumman Systems Corporation | Hybrid spectral and coherent beam combiner utilizing 1D fiber arrays |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598882A (en) * | 2008-06-04 | 2009-12-09 | 中国科学院物理研究所 | Device with frequently different ultrashort laser pulses generation laser with new wavelength |
| US9640939B2 (en) * | 2012-06-12 | 2017-05-02 | Photon Energy Gmbh | Short pulse laser with amplifier and adjustable pulse sequence |
| WO2015006867A1 (en) * | 2013-07-16 | 2015-01-22 | Attodyne, Inc. | Laser control system and method |
| CN203747227U (en) * | 2014-01-23 | 2014-07-30 | 深圳市伽蓝特科技有限公司 | Narrow pulse laser light source |
| CN103825179A (en) * | 2014-03-24 | 2014-05-28 | 深圳市杰普特电子技术有限公司 | Pulse-waveform-adjustable optical fiber laser device and modulation method thereof |
| WO2017081858A1 (en) * | 2015-11-12 | 2017-05-18 | Ricoh Company, Ltd. | Laser beam generation apparatus, laser machining device, and laser machining method |
| CN106785832B (en) * | 2016-11-25 | 2019-04-23 | 深圳市杰普特光电股份有限公司 | Pulse optical fiber |
| JP6568136B2 (en) * | 2017-04-06 | 2019-08-28 | ファナック株式会社 | Laser apparatus having a plurality of laser modules |
| CN109244821B (en) * | 2018-11-08 | 2020-12-29 | 深圳市杰普特光电股份有限公司 | Laser and laser generation method |
-
2018
- 2018-11-08 CN CN201811328291.1A patent/CN109244821B/en active Active
-
2019
- 2019-11-08 WO PCT/CN2019/116518 patent/WO2020094115A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057927A (en) * | 1990-07-03 | 1992-01-15 | 中国科学院上海光学精密机械研究所 | Synchronistically automatic control device for laser oscillation amplifier chain |
| EP1298827B1 (en) * | 2001-09-27 | 2006-10-04 | Fujitsu Limited | Optical signal processing system |
| US9735537B1 (en) * | 2016-04-12 | 2017-08-15 | Northrop Grumman Systems Corporation | Hybrid spectral and coherent beam combiner utilizing 1D fiber arrays |
| CN106848816A (en) * | 2017-02-08 | 2017-06-13 | 中科先为激光科技（北京）有限公司 | Sequential synthesizes quasi-continuous optical fiber laser |
Non-Patent Citations (2)
| Title |
|---|
| "Optical Correlation Domain Reflectometry Based on Coherence Synchronization: Theoretical Analysis and Proof-of-Concept";Okamoto 等;《JOURNAL OF LIGHTWAVE TECHNOLOGY 》;20161231;全文 * |
| "脉冲激光的非相干合成技术研究";李洪敏;《激光技术》;20150325;全文 * |
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| CN109244821A (en) | 2019-01-18 |
| WO2020094115A1 (en) | 2020-05-14 |
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