CN109638628A - Improve the control device and its method of laser stability - Google Patents
Improve the control device and its method of laser stability Download PDFInfo
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- CN109638628A CN109638628A CN201811636503.2A CN201811636503A CN109638628A CN 109638628 A CN109638628 A CN 109638628A CN 201811636503 A CN201811636503 A CN 201811636503A CN 109638628 A CN109638628 A CN 109638628A
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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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/117—Q-switching using intracavity acousto-optic devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/11—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
- G02F1/113—Circuit or control arrangements
-
- 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
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Lasers (AREA)
Abstract
The present invention relates to the control device and methods for improving laser stability, comprising: reference clock, to generate fundamental clock signal；The Trigger signal of control unit, the fundamental clock signal generated according to reference clock and external control interface input exports modulated pulse signal to acousto-optic modulator；Acousto-optic modulator modulates output laser pulse according to modulated pulse signal；Reference clock connects control unit, and control unit connects acousto-optic modulator.Realization filters out undesirable Trigger signal, avoids generating high-peak power light pulse because frequency goes beyond the scope, while also realizing the realization for avoiding laser head pulse by adjusting modulated pulse signal duty ratio, avoids generating high-peak power light pulse.
Description
Technical field
The present invention relates to a kind of control devices and its method for improving laser stability.
Background technique
Currently, laser is widely used in fields such as cutting, drilling, marks.Domestic development & production multiple types
The producer of laser gushes out such as spring bamboo, and under the premise of technical maturity, the performance of laser has obtained more concern, especially
It is its stability.The stability of laser is related with several factors, and wherein the performance of electric-control system plays a key role.Due to
The frequency of laser output light pulse is consistent with the frequency of Trigger signal, therefore in practical applications, and most of clients can incline
It is controlled in using external Trigger.For this mode for production and processing, advantage is strong flexibility, easy to operate, controllable
Property it is good, the disadvantage is that if customer parameter setting it is improper, frequency be lower than normal range of operation when, single laser pulse peak power can be higher than
The damage threshold of optical element will lead to the damage of optical element in laser cavity in this way.In addition, laser is in practical applications,
Laser head pulse can also reach very high peak power, also result in the damage of optical element in laser cavity.Therefore how to mention
The stability of high entire Optical Maser System, becomes the problem of many laser vendors.
In view of the above-mentioned problems, can choose the optical element of high damage threshold when optical design type selecting, can bear in this way
The light pulse of more high-peak power, this mode is possible in theory, but for current optical element manufacture craft, it is domestic this
The technology of aspect need further to break through, can be higher for production cost and maintenance cost.Therefore, how from automatically controlled
Aspect effectively to avoid the generation of high-peak power light pulse, and tool has very important significance.
Summary of the invention
The purpose of the present invention is overcoming the shortcomings of the prior art, a kind of control dress for improving laser stability is provided
It sets and its method.
The purpose of the present invention is achieved through the following technical solutions:
The control device of laser stability is improved, feature is: including
Reference clock, to generate fundamental clock signal；
The Trigger of control unit, the fundamental clock signal generated according to reference clock and external control interface input
Signal exports modulated pulse signal to acousto-optic modulator；
Acousto-optic modulator modulates output laser pulse according to modulated pulse signal；
The reference clock connects control unit, and control unit connects acousto-optic modulator.
Further, the control device of above-mentioned raising laser stability, wherein the reference clock is to can produce
The crystal oscillator of 10MHz~1GHz fundamental clock signal.
Further, the control device of above-mentioned raising laser stability, wherein described control unit has for patrolling
Collect the fpga chip of timing control and control management.
Further, the control device of above-mentioned raising laser stability, wherein the fpga chip is model
The chip of EP4CE6E22I7.
Further, the control device of above-mentioned raising laser stability, wherein described control unit is equipped with for connecting
Connect the RS232 interface and I/O interface of remote control apparatus.
Further, the control device of above-mentioned raising laser stability, wherein described control unit is equipped with for connecing
Enter the external control interface of Trigger signal.
The control method of present invention raising laser stability, comprising the following steps:
(1) choosing control unit is external control Trigger mode, and control unit is received from external control interface
Trigger signal；
(2) control unit controls Trigger signal outside capture under the clock signal driving of reference clock, according to clock
Signal real-time sampling Trigger signal；
(3) control unit is according to the modulated pulse signal of the output of Trigger signal and Trigger signal same frequency to acousto-optic
Modulator；
(4) acousto-optic modulator modulates output laser pulse according to modulated pulse signal.
Further, the control method of above-mentioned raising laser stability, wherein step (1), control unit has two
Kind operating mode, one is internal control mode, this mode does not need the frequency and duty ratio of detection Trigger signal,
Trigger signal is to be input to control unit by I/O interface；
Another kind is external control Trigger mode, and Trigger signal is inputted by external control interface, this mode
Need to detect the frequency and duty ratio of the Trigger signal of external control, while in this mode there are two types of duty cycle modes, respectively
It is fixed mode and replication mode, fixed mode refers to that the duty ratio of output modulated pulse signal is certain value, and limits exist
1%~99%, replication mode, which refers to, exports pulse-modulated signal as Trigger signal, same frequency and duty ratio.
Further, the control method of above-mentioned raising laser stability, wherein step (2), the core of control unit
Piece receives the clock signal of reference clock, while with the frequency real-time sampling Trigger signal of clock signal, and records current
Rising edge time, failing edge moment and the next Trigger signal rising edge time of Trigger signal, obtain these three
After parameter, the chip of control unit can calculate period, frequency and the duty ratio of current Trigger signal；Current Trigger
The rising edge time that the period of signal is equal to next Trigger signal subtracts the rising edge time of current Trigger signal, when
The frequency of preceding Trigger signal is equal to the one of current Trigger signal period point, and the duty ratio of current Trigger signal is equal to
Period of the time of the high level of current Trigger signal divided by current Trigger signal, the height electricity of current Trigger signal
The failing edge moment that the flat time is equal to current Trigger signal subtracts the rising edge time of current Trigger signal；
Then, whether the chip of control unit differentiates the frequency of current Trigger signal in 10KHz~10000KHz range
Interior, if within this range, meeting frequency requirement, duplication exports current Trigger signal；If not shielding in above range
Cover current Trigger signal；After duplication exports current Trigger signal, output modulation pulse is determined further according to duty cycle mode
Signal.
Further, the control method of above-mentioned raising laser stability, wherein the chip of described control unit is
Fpga chip.
The present invention has significant advantages and beneficial effects compared with prior art, embodies in the following areas:
1. the present invention, which realizes, filters out undesirable Trigger signal, avoid generating peak because frequency goes beyond the scope
It is worth power light pulses, while also realizes the realization for avoiding laser head pulse by adjusting modulated pulse signal duty ratio, avoids producing
Raw high-peak power light pulse；
2. there is no the light pulse of high-peak power to generate in use process, dynamic realtime may be implemented and detect outside
The frequency and duty ratio of Trigger signal mask undesirable Trigger signal；
3. according to fit curve equation, it can be achieved that the adjusting of first modulated pulse signal duty ratio, inhibits according to this to reach
The generation of first high-peak power light pulse；
4. after fixed duty cycle, reaching same frequency by the remotely located duty ratio that can arbitrarily adjust modulated pulse signal
Under output optical pulse peak power it is identical；
5. efficiently solving the high-peak power light pulse because of caused by external Trigger signal problem damages optical element
The problem of；The stability for significantly improving laser operation, greatly prolongs the service life of laser.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that by implementing specific embodiment of the invention understanding.The objectives and other advantages of the invention can be by institute
Specifically noted structure is achieved and obtained in specification, claims and the attached drawing write.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1: the principle of the present invention structural schematic diagram；
Fig. 2: clock signal, Trigger signal, modulated pulse signal and laser pulse timing diagram；
Fig. 3: actually measured duty ratio corresponds to the curve graph that peak power data fits.
The meaning of each appended drawing reference see the table below in figure:
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, directional terminology and ordinal term etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
As shown in Figure 1, the control device of laser stability is improved, including
Reference clock 2, to generate fundamental clock signal；
The Trigger of control unit 1, the fundamental clock signal generated according to reference clock and external control interface input
Signal exports modulated pulse signal to acousto-optic modulator 3；
Acousto-optic modulator 3 modulates output laser pulse according to modulated pulse signal；
Reference clock 2 connects control unit 1, and control unit 1 connects acousto-optic modulator 3.
Wherein, reference clock 2 is the crystal oscillator that can produce 10MHz~1GHz fundamental clock signal.
Control unit 1 has the RS232 interface 102 and I/O interface 103 for connecting remote control apparatus 4, has and is used for
Access the external control interface 104 of Trigger signal.
Control unit 1 has FPGA (the Field-Programmable Gate for logical-sequential control and control management
Array the chip of model EP4CE6E22I7 can be used in) chip 101.Fpga chip 101, which receives, comes from external control interface
104 Trigger signal, fpga chip 101 is according to clock signal real-time sampling Trigger signal, finally output and Trigger
The modulated pulse signal of signal same frequency, modulated pulse signal generate laser pulse after being input to acousto-optic modulator 3, adjust in the process
The duty ratio of pulse signal processed can be adjusted by remote control apparatus 4 according to actual needs.
The control method of present invention raising laser stability, comprising the following steps:
(1) the external of control unit is chosen by remote control apparatus 4 and controls Trigger mode, external control interface 104
Trigger signal is inputted to the fpga chip of control unit；
(2) fpga chip of control unit 1 controls Trigger outside capture under the clock signal driving of reference clock 2
Signal, according to clock signal real-time sampling Trigger signal；
(3) control unit 1 is according to the modulated pulse signal of the output of Trigger signal and Trigger signal same frequency to sound
Optical modulator 3；
(4) acousto-optic modulator 3 modulates output laser pulse according to modulated pulse signal.
Wherein, step (1), there are two types of operating modes for control unit 1, and one is internal control mode, this mode is not needed
The frequency and duty ratio of Trigger signal are detected, Trigger signal is to be input to control unit by I/O interface；Another kind is
Outside control Trigger mode, Trigger signal is inputted by external control interface, this mode needs to detect external control
Trigger signal frequency and duty ratio, be fixed mode and duplication respectively while in this mode there are two types of duty cycle modes
Mode, fixed mode refer to that the duty ratio of output modulated pulse signal is certain value, and limits are 1%~99%, backed stamper
Formula, which refers to, exports pulse-modulated signal as Trigger signal, same frequency and duty ratio.
Step (2), the fpga chip 101 of control unit 1 receive the clock signal of reference clock 2, while with clock signal
Frequency real-time sampling Trigger signal, and record the rising edge time of current Trigger signal, the failing edge moment and under
One Trigger signal rising edge time, after obtaining these three parameters, the fpga chip 101 of control unit 1 can be calculated currently
Period, frequency and the duty ratio of Trigger signal；The period of current Trigger signal is equal to next Trigger signal
Rising edge time subtracts the rising edge time of current Trigger signal, and the frequency of current Trigger signal is equal to current
The one of Trigger signal period point, the duty ratio of current Trigger signal be equal to the high level of current Trigger signal when
Between divided by current Trigger signal period, time of the high level of current Trigger signal is equal to current Trigger signal
The failing edge moment subtract the rising edge time of current Trigger signal；Then, the differentiation of fpga chip 101 of control unit is worked as
Whether the frequency of preceding Trigger signal is within the scope of 10KHz~10000KHz, if within this range, meeting frequency requirement,
Duplication exports current Trigger signal；If not shielding current Trigger signal in above range；Duplication output is current
After Trigger signal, output modulated pulse signal is determined further according to duty cycle mode.
In above-mentioned steps, clock signal, Trigger signal, modulated pulse signal and laser pulse can be in timing
It is indicated by Fig. 2.As can be seen from Figure 2: fpga chip 101 is driven by the clock signal, real-time detection Trigger letter
Number, the modulated signal of output lags behind one current period of Trigger signal, and output laser pulse number and modulated signal are one by one
It is corresponding.
The present invention can also be adjusted the duty ratio of first pulse signal in the modulated pulse signal sequence of output.
Different duty ratios can control the peak power of laser pulse under same frequency, and the bigger peak power of duty ratio is more
It is low.Therefore it adjusts rule and is such that actual measurement goes out under same frequency to export the corresponding duty ratio of peak power first, fits
Peak power duty ratio corresponding figure, and obtain fit curve equation, it is bent by fitting then according to desired output peak power
Line equation calculation goes out the duty ratio of modulated pulse signal.It is modulated pulse signal under the conditions of 50KHz, according to practical survey such as Fig. 3
The duty ratio obtained corresponds to the curve graph that peak power data fits, and duty ratio is bigger as can be seen from Figure 3, exports peak power
It is lower.According to desired peak power, duty ratio is found out by fit curve equation, can be realized under same frequency, it is any solid
Determine the output laser pulse of peak power.
The present invention is to solve because optical element is easy caused by by the light pulse damage of high-peak power surely in laser cavity
Qualitative question provides a kind of control device that laser stability can be improved from automatically controlled angle and its method, realization filters out
Undesirable Trigger signal avoids generating high-peak power light pulse because frequency goes beyond the scope, also real at the same time
The realization that laser head pulse is now avoided by adjusting modulated pulse signal duty ratio, is equally avoided that and generates high-peak power light arteries and veins
Punching.
Its effect does not have clearly, in use process the light pulse of high-peak power to generate, and highlights following several respects
The advantages of:
1) frequency and duty ratio that dynamic realtime detects external Trigger signal may be implemented, mask not meeting and want
The Trigger signal asked；
2) according to fit curve equation, the adjusting of first modulated pulse signal duty ratio may be implemented, press down according to this to reach
Make the generation of first high-peak power light pulse；
3) by the remotely located duty ratio that can arbitrarily adjust modulated pulse signal, after fixed duty cycle, reach same frequency
Under output optical pulse peak power it is identical；
4) it efficiently solves the high-peak power light pulse because of caused by external Trigger signal problem and damages optical element
The problem of；
5) stability for significantly improving laser operation, greatly prolongs the service life of laser.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above is only a specific embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to protection scope described in claim.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (10)
1. improving the control device of laser stability, it is characterised in that: including
Reference clock, to generate fundamental clock signal；
The Trigger signal of control unit, the fundamental clock signal generated according to reference clock and external control interface input
Modulated pulse signal is exported to acousto-optic modulator；
Acousto-optic modulator modulates output laser pulse according to modulated pulse signal；
The reference clock connects control unit, and control unit connects acousto-optic modulator.
2. the control device according to claim 1 for improving laser stability, it is characterised in that: the reference clock is
It can produce the crystal oscillator of 10MHz~1GHz fundamental clock signal.
3. the control device according to claim 1 for improving laser stability, it is characterised in that: described control unit tool
There is the fpga chip for logical-sequential control and control management.
4. the control device according to claim 3 for improving laser stability, it is characterised in that: the fpga chip is
The chip of model EP4CE6E22I7.
5. the control device according to claim 1 for improving laser stability, it is characterised in that: described control unit is set
There are the RS232 interface and I/O interface for connecting remote control apparatus.
6. the control device according to claim 1 for improving laser stability, it is characterised in that: described control unit is set
There is the external control interface for accessing Trigger signal.
7. device described in claim 1 realizes the control method for improving laser stability, it is characterised in that: including following step
It is rapid:
(1) choosing control unit is external control Trigger mode, and control unit is received from external control interface
Trigger signal；
(2) control unit controls Trigger signal outside capture under the clock signal driving of reference clock, according to clock signal
Real-time sampling Trigger signal；
(3) control unit is according to the modulated pulse signal of the output of Trigger signal and Trigger signal same frequency to acousto-optic modulation
Device；
(4) acousto-optic modulator modulates output laser pulse according to modulated pulse signal.
8. the control method according to claim 7 for improving laser stability, it is characterised in that: step (1), control are single
There are two types of operating modes for member, and one is internal control mode, this mode does not need the frequency and duty of detection Trigger signal
Than Trigger signal is to be input to control unit by I/O interface；
Another kind is external control Trigger mode, and Trigger signal is inputted by external control interface, this mode needs
The frequency and duty ratio of the external Trigger signal controlled of detection, while in this mode there are two types of duty cycle modes, it is solid respectively
Mould-fixed and replication mode, fixed mode refer to that the duty ratio of output modulated pulse signal is certain value, limits 1%~
99%, replication mode, which refers to, exports pulse-modulated signal as Trigger signal, same frequency and duty ratio.
9. the control method according to claim 7 for improving laser stability, it is characterised in that: step (2), control are single
The chip of member receives the clock signal of reference clock, while with the frequency real-time sampling Trigger signal of clock signal, and records
Rising edge time, failing edge moment and the next Trigger signal rising edge time of current Trigger signal, obtain this
After three parameters, the chip of control unit can calculate period, frequency and the duty ratio of current Trigger signal；Current
The rising edge time that the period of Trigger signal is equal to next Trigger signal subtracts the rising edge of current Trigger signal
Moment, the frequency of current Trigger signal are equal to the one of the current Trigger signal period point, the duty of current Trigger signal
Than period of the time divided by current Trigger signal for being equal to the high level of current Trigger signal, current Trigger signal
Time of high level be equal to failing edge moment of current Trigger signal and subtract the rising edge time of current Trigger signal；
Then, the chip of control unit differentiate the frequency of current Trigger signal whether within the scope of 10KHz~10000KHz,
If within this range, meeting frequency requirement, duplication exports current Trigger signal；If not in above range, shielding is worked as
Preceding Trigger signal；After duplication exports current Trigger signal, output modulated pulse signal is determined further according to duty cycle mode.
10. the control method according to claim 9 for improving laser stability, it is characterised in that: described control unit
Chip be fpga chip.
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| CN201811636503.2A CN109638628A (en) | 2018-12-29 | 2018-12-29 | Improve the control device and its method of laser stability |
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| CN110017912A (en) * | 2019-04-22 | 2019-07-16 | 深圳市度彼电子有限公司 | A kind of voltage driver, laser ranging system, driving method and distance measuring method |
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| CN113422284A (en) * | 2021-06-23 | 2021-09-21 | 天津凯普林激光科技有限公司 | Random trigger control method, random trigger control system and laser system |
| CN113534747A (en) * | 2021-06-23 | 2021-10-22 | 苏州贝林激光有限公司 | Control circuit of two-dimensional acousto-optic diffraction device and control method thereof |
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| CN110017912B (en) * | 2019-04-22 | 2023-05-30 | 深圳市杜比激光有限公司 | Voltage driving device, laser ranging device, driving method and ranging method |
| CN110859668A (en) * | 2019-11-15 | 2020-03-06 | 武汉芸禾光电技术有限公司 | Combined pulse high-power semiconductor laser therapeutic instrument driving device and system |
| CN110859668B (en) * | 2019-11-15 | 2021-05-25 | 武汉芸禾光电技术有限公司 | Combined pulse high-power semiconductor laser therapeutic instrument driving device and system |
| CN111525385A (en) * | 2020-07-02 | 2020-08-11 | 武汉华锐超快光纤激光技术有限公司 | High-precision pulse POD control method and circuit of femtosecond fiber laser |
| CN113422284A (en) * | 2021-06-23 | 2021-09-21 | 天津凯普林激光科技有限公司 | Random trigger control method, random trigger control system and laser system |
| CN113534747A (en) * | 2021-06-23 | 2021-10-22 | 苏州贝林激光有限公司 | Control circuit of two-dimensional acousto-optic diffraction device and control method thereof |
| CN114122883A (en) * | 2021-11-19 | 2022-03-01 | 北京盛镭科技有限公司 | Industrial ultrafast laser electrical control system |
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