Synchronous time sequence control system for high repetition frequency string pulse laser illumination measurement

Abstract

The invention discloses a synchronous time sequence control system for high repetition frequency string pulse laser illumination measurement, which relates to the technical field of laser illumination measurement and comprises a first signal generator, a second signal generator, a third signal generator, a laser seed source, a laser amplifier and a camera system. The first signal generator is used for outputting a first control signal to the laser seed source and outputting a second control signal to the second signal generator; the third signal generator is used for outputting a third control signal to the laser amplifier and outputting a fourth control signal to the second signal generator; the second signal generator generates a camera trigger signal according to the second control signal, and outputs the camera trigger signal to the camera system only in the high level range of the fourth control signal. According to the invention, strict synchronization of camera exposure and laser pulses can be ensured, so that a camera system can capture a laser illumination effect in the whole duration of macro pulses.

Description

Technical Field

[0001] The present invention relates to the technical field of laser illumination measurement, and particularly to a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement. Background Art

[0002] Laser illumination measurement systems are mainly divided into conventional low-repetition-rate dual-channel systems (single-channel pulse frequency 1 Hz - 1 KHz) and high-repetition-rate burst pulse systems (pulse frequency above 10 KHz).

[0003] In the low-repetition-rate dual-channel system, two lasers output independently, and the delay is relatively adjustable. The timing control system gives 2-channel or 4-channel trigger signals required by the laser, and at the same time gives one trigger signal required by the camera. The delays of the three signals are as Figure 1 shown. Such a system ensures that each frame of the camera can capture the measurement field after laser illumination by placing the laser pulse within the camera exposure time.

[0004] Due to the characteristics of the laser itself, the high-repetition-rate burst pulse system cannot receive one trigger signal and output one laser pulse like the low-repetition-rate system. The sub-pulse timing is given internally by the laser, and the start time and width of the macro pulse can be controlled externally. However, there are two main defects in the existing high-repetition-rate burst pulse illumination systems.

[0005] The first technical defect is that the camera exposure clock and the clock of the laser output laser pulse are non-homogeneous clocks and cannot be accurately synchronized. Due to inconsistent clock sources, the periods of non-homogeneous clocks are different, and the pulse delay will change after working for a certain time, as Figure 2 . This results in that during debugging, the front delay is adjusted so that each exposure can capture the laser pulse. However, as the width of the macro pulse increases, the laser pulse at the tail of the macro pulse cannot be synchronized with the camera exposure moment, so that the complete illumination field cannot be captured.

[0006] The second technical defect is that the conventional system is limited by the camera storage speed and exposure time and cannot achieve high-repetition-rate photographing. For example, under the condition of 1 MHz laser output, the laser period is only 1 μs, while the current shortest exposure time of the camera is about 500 ns. Storing high-quality large-format photos requires a long time and cannot be completed and the next image acquisition cannot start within such a short period. Summary of the Invention

[0007] The present invention discloses a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement, aiming to solve the technical problems existing in the prior art. The present invention adopts the following technical solutions: An embodiment of the present invention provides a synchronous timing control system for high-repetition-rate pulsed laser illumination measurement, including a first signal generator, a second signal generator, a third signal generator, a laser seed source, a laser amplifier, and a camera system; The first signal generator is configured to output a first control signal to the laser seed source and, at the same time, output a second control signal serving as a clock source signal to the second signal generator; both the first control signal and the second control signal are sub-pulse frequency signals; The third signal generator is configured to output a third control signal to the laser amplifier and, at the same time, output a fourth control signal to the second signal generator; both the third control signal and the fourth control signal are low-repetition-rate macro-pulse trigger signals; The second signal generator generates a camera trigger signal according to the second control signal and outputs the camera trigger signal to the camera system only within the high-level range of the fourth control signal.

[0008] As a preferred technical solution, the first control signal and the second control signal output by the first signal generator have the same frequency.

[0009] As a preferred technical solution, the frequency of the sub-pulse frequency signal is higher than the maximum shooting frequency that can be achieved when a single camera in the camera system operates.

[0010] As a preferred technical solution, the third control signal and the fourth control signal output by the third signal generator have the same frequency, the same pulse width, and an adjustable relative delay.

[0011] As a preferred technical solution, the third signal generator is configured to operate in an internal trigger mode or receive an external trigger signal to enable the third signal generator to be synchronized with external devices.

[0012] As a preferred technical solution, the frequency of the low-repetition-rate macro-pulse trigger signal is lower than the frequency of the sub-pulse frequency signal.

[0013] As a preferred technical solution, the laser amplifier only amplifies the laser sub-pulses within the high-level range according to the high-level range of the third control signal.

[0014] As a preferred technical solution, the second signal generator can perform frequency division processing on the second control signal to generate a camera trigger signal.

[0015] As a preferred technical solution, the second signal generator is configured to operate in a gated mode and output a camera trigger signal only when receiving the high level of the fourth control signal, so that the exposure time of the camera system is synchronized with the laser pulses amplified by the laser amplifier.

[0016] As a preferred technical solution, the camera system includes a single camera or multiple cameras; When the camera system includes multiple cameras, the second signal generator is provided with multiple output ports, and the delay and pulse width between the camera trigger signals output by each output port can be adjusted independently to adapt to the synchronous shooting of multiple cameras in the camera system.

[0017] One embodiment of the above invention has the following advantages or beneficial effects: The present invention mainly provides a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement. In this system, three signal generators that cooperate with each other are provided, including a first signal generator, a second signal generator, and a third signal generator. By providing a homologous clock signal for the laser seed source and the second signal generator simultaneously through the first signal generator, it ensures that the laser pulse output is strictly synchronized with the camera exposure trigger signal, solves the synchronization problem caused by non-homologous clocks in the traditional system, and enables the camera to accurately capture the laser illumination effect during each exposure process. Even when the macro pulse duration is relatively long, it can also ensure that the laser pulses at the end of the macro pulse are accurately recorded by the camera.

[0018] In addition, the present invention divides the clock signal through the second signal generator, enabling the system to support the synchronous operation of multiple cameras, effectively overcoming the technical obstacle that a single camera cannot perform high-repetition-rate photography due to storage speed and exposure time limitations. This allows operators to use multiple ordinary cameras instead of expensive high-speed cameras, or achieve a more refined shooting effect through the collaborative work of multiple high-speed cameras, thereby significantly reducing the usage cost of the measurement system and improving the experimental efficiency.

[0019] Furthermore, the timing control system provided by the present invention has strong adaptability and flexibility. By adjusting the parameter settings of different signal generators, it can adapt to laser illumination scenarios with sub-pulse frequencies ranging from 10KHz to 1MHz or even higher frequencies. At the same time, the system supports single-camera and multi-camera system configurations and can be flexibly adjusted according to actual measurement requirements to meet the precise measurement requirements under different experimental conditions. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. These drawings form a part of the present invention, and the schematic embodiments of the present invention and their explanations explain the present invention without constituting an improper limitation to the present invention. In the drawings: Figure 1 It is a schematic diagram of the timing relationship of a low-repetition-rate dual-channel illumination system in the prior art; Figure 2 It is a schematic diagram of the timing relationship between camera exposure and laser signals in a high-repetition-rate burst pulse in the prior art; Figure 3Structural diagram of a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement disclosed in Embodiment 1 of the present invention; Figure 4 Structural diagram of a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement disclosed in Embodiment 2 of the present invention; Figure 5 Structural diagram of a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement disclosed in Embodiment 3 of the present invention.

[0021] Explanation of reference numerals: The first signal generator 11, the second signal generator 12, the third signal generator 13, the laser seed source 14, the laser amplifier 15, and the camera system 16. Detailed implementation manners

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. In the description of the present invention, it should be noted that the term "or" is generally used in the sense of including "and / or" unless otherwise clearly specified in the context.

[0023] In the description of the present invention, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0024] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the prior art, since the camera exposure clock and the laser output laser pulse clock are non-homogeneous clocks, it is impossible to achieve precise synchronization. Especially when the macro pulse width increases, the laser pulses at the tail of the macro pulse cannot be synchronized with the camera exposure moment, making it difficult to capture the complete illumination field in the experiment. Embodiment 1

[0026] Refer to Figure 3 , to solve the problems existing in the prior art, Embodiment 1 of the present invention provides a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement. Preferably, the system includes the first signal generator 11, the second signal generator 12, the third signal generator 13, the laser seed source 14, the laser amplifier 15, and the camera system 16.

[0027] Preferably, the first signal generator 11 is capable of simultaneously outputting a first control signal and a second control signal, both of which are sub-pulse frequency signals. Among them, the first control signal is sent to the laser seed source 14, and the second control signal is used as a clock source signal and sent to the second signal generator 12.

[0028] In a preferred embodiment, the first signal generator 11 is configured as a precision timing control device, which can generate a stable high-frequency signal as the reference clock source for the entire system. Preferably, the output frequency of the first signal generator 11 can be adjusted within the range of 1 Hz to 1 MHz to meet the requirements of different experimental scenarios.

[0029] Specifically, the sub-pulse frequency signal refers to an electrical signal with a high frequency and a short pulse width. The purpose of setting the sub-pulse frequency signal is to provide a stable trigger reference for the laser seed source 14, and at the same time provide a signal with the same frequency as the clock source to the second signal generator 12, so as to ensure that the laser pulse output and the exposure time of the camera system 16 are based on the same clock source, and solve the synchronization drift problem caused by non-homogeneous clocks.

[0030] Preferably, the third signal generator 13 is capable of simultaneously outputting a third control signal and a fourth control signal, both of which are low-repetition-rate macro-pulse trigger signals. Among them, the third control signal is sent to the laser amplifier 15, and the fourth control signal is sent to the second signal generator 12.

[0031] In a preferred embodiment, the frequency of the low-repetition-rate macro-pulse trigger signal is relatively low, ranging from 0.1 Hz to 1 Hz, but the pulse width is adjustable, ranging from milliseconds to seconds. The role of the low-repetition-rate macro-pulse trigger signal is to control the working time window of the laser amplifier 15 and the output enable of the second signal generator 12. By setting the low-repetition-rate macro-pulse trigger signal, the measurement period of the entire system can be controlled, avoiding the thermal effect problem caused by the long-term continuous operation of the laser, and at the same time, by controlling the gated input of the second signal generator 12, the precise synchronization of the exposure of the camera system 16 and the laser amplification output can be achieved.

[0032] Preferably, after receiving the second control signal and the fourth control signal, the second signal generator 12 generates a camera trigger signal according to the second control signal, and outputs the camera trigger signal to the camera system 16 only within the high-level range of the fourth control signal.

[0033] In a preferred embodiment, the second signal generator 12 is a device responsible for generating the camera trigger signal, and its operating mode is set to the gating mode. Specifically, the gating mode is the GATE mode. In the gating mode, the second signal generator 12 outputs a trigger signal only when it receives the high level of the fourth control signal, so as to ensure that the camera system 16 performs exposure only during the time period with laser illumination. Preferably, the second signal generator 12 has a frequency division function and can perform frequency division processing on the input high-frequency clock signal according to actual needs to adapt to the maximum operating frequency limit of a single camera.

[0034] In a preferred embodiment, the first control signal and the second control signal output by the first signal generator 11 have the same frequency. Specifically, when the first signal generator 11 provides the first control signal to the laser seed source 14 and at the same time provides the second control signal with the same frequency as the clock source to the second signal generator 12, a strict homologous relationship is established between the camera trigger signal generated by the second signal generator 12 and the laser output signal of the laser seed source 14, enabling the system to perform precise synchronous delay adjustment and eliminating the inevitable time drift problem in the traditional non-homologous clock system. For example, even during a long-term experiment or in the end region of a laser macro-pulse, the phase relationship between the camera trigger signal and the laser pulse can still be maintained strictly stable, ensuring that each camera exposure can accurately capture the scene at the moment of laser illumination.

[0035] In a preferred embodiment, the second signal generator 12 can perform frequency division processing on the second control signal to generate the camera trigger signal. Specifically, since the sub-pulse frequency of the high-repetition-rate laser system (such as 1 MHz) is much higher than the maximum continuous shooting rate of ordinary cameras or even high-speed cameras, without frequency division processing, the camera will not be able to complete the storage and transmission of image data. By appropriately frequency dividing the second control signal, the trigger frequency can be reduced to a range that the camera can handle, while maintaining the precise phase relationship between the trigger signal and the laser pulse, thus solving the technical contradiction of the mismatch between high-frequency laser illumination and the camera operating speed.

[0036] In a preferred embodiment, the third control signal and the fourth control signal output by the third signal generator 13 have the same frequency and the same pulse width, and the relative delay is adjustable. Specifically, the consistent frequency and pulse width ensure that the laser amplifier 15 and the camera system 16 operate within the same time window, while the adjustable relative delay provides the flexibility of system timing fine-tuning, allowing the operator to precisely control the time offset of the start of camera exposure relative to the start of laser amplification according to the characteristics of the specific measurement object to optimize the capture effect.

[0037] In a preferred embodiment, the third signal generator 13 is configured to operate in an internally triggered mode or receive an external trigger signal, enabling the third signal generator 13 to synchronize with external devices. Preferably, in independent experiments, the third signal generator 13 can adopt an internal trigger mode and operate autonomously according to a preset frequency; while in a complex integrated test environment, such as when working in coordination with a fluid control system, a mechanical motion control system, or other measuring instruments, the third signal generator 13 can receive a trigger signal provided by an external device to ensure that the entire measurement system maintains precise synchronization with external events.

[0038] In a preferred embodiment, the frequency of the sub-pulse frequency signal is higher than the maximum shooting frequency achievable when a single camera in the camera system 16 operates. Through the frequency division processing of the second signal generator 12, the hardware limitations of a single camera can be overcome; further, the frequency of the low-repetition-rate macro-pulse trigger signal is lower than that of the sub-pulse frequency signal, enabling the system to achieve short-time high-frequency sampling at a lower repetition rate.

[0039] Preferably, the laser seed source 14 is configured as a high-repetition-rate fiber seed source; preferably, the laser amplifier 15 amplifies only the laser sub-pulses within the high-level range according to the high-level range of the third control signal. This gated amplification mode ensures that only the sub-pulses falling within the macro-pulse time window are amplified and output, forming a typical train-pulse laser output characteristic.

[0040] In a preferred embodiment, only one camera is configured in the camera system 16. At this time, the system can still ensure the synchronization of camera exposure and laser pulses through frequency division processing.

[0041] In another preferred embodiment, multiple cameras are configured in the camera system 16 to break through the bottleneck of the hardware limitations of a single camera; at this time, the second signal generator 12 is provided with multiple output ports, and the delay and pulse width between the camera trigger signals output by each output port can be adjusted independently to adapt to the synchronous shooting of multiple cameras in the camera system 16.

[0042] In this embodiment, through the coordinated cooperation of the first signal generator 11, the second signal generator 12, and the third signal generator 13, the output clock of the laser and the exposure clock of the camera shooting are output in the same source and synchronously, thereby ensuring that the camera can accurately capture the laser pulse every time it is exposed in the high-repetition-rate train-pulse laser illumination scenario; secondly, the embodiment of the present invention also reduces the requirements for a high-speed camera in the high-repetition-rate illumination field. Through the cooperation of the sub-pulse frequency signal and the low-repetition-rate macro-pulse trigger signal, as well as the frequency division function of the second signal generator 12, a camera with a lower configuration can still complete the shooting task of the high-repetition-rate high-speed illumination field. Embodiment 2

[0043] Reference Figure 4, embodiments of the present invention provide a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement. Preferably, the system includes a first signal generator 11, a second signal generator 12, a third signal generator 13, a laser seed source 14, a laser amplifier 15, and a camera system 16. Preferably, the sub-pulse frequency signal in this embodiment is 1 MHz, the low-repetition-rate macro-pulse trigger signal is 0.1 Hz, and there are 5 cameras in the camera system 16.

[0044] In a preferred embodiment, the first signal generator 11 serves as the reference clock source for the entire system, and simultaneously provides an output first control signal to the laser seed source 14 and a second control signal to the second signal generator 12. The frequencies of the first control signal and the second control signal are both 1 MHz. The first control signal serves as the timing signal for the laser pulses output by the laser seed source 14, while the second control signal serves as the clock source signal for the second signal generator 12. At this time, the laser pulses and the camera trigger signals are based on the exactly same clock source, fundamentally solving the synchronization drift problem caused by non-homogeneous clocks.

[0045] In a preferred embodiment, after receiving the second control signal, the second signal generator 12 performs frequency division processing and outputs trigger signals to the camera system 16 through its multiple output ports. In this embodiment, since the camera system 16 is configured with 5 cameras, after the second signal generator 12 performs frequency division processing on the 1 MHz input signal, the frequency of each output is 20 KHz, and the delay and pulse width of each output can be adjusted independently to ensure that the trigger signals output to each camera are strictly synchronized with the laser pulse timing. Through the frequency division design, the hardware limitation problem that a single camera cannot achieve 1 MHz high-speed acquisition is effectively solved.

[0046] During actual photographing, the first signal generator 11 starts working in advance to ensure the normal output of the laser seed source 14. However, at this time, the laser has not been amplified yet, and the system waits for the third signal generator 13 to output a control signal. The third signal generator 13 is configured to output a third control signal to the laser amplifier 15 to make the laser amplifier 15 start working and output amplified burst pulsed laser. In this embodiment, the frequency of the third control signal is 0.1 Hz and the pulse width is 1 ms. At the same time, the third signal generator 13 also outputs a fourth control signal to the gating input terminal of the second signal generator 12. The frequency of the fourth control signal is also 0.1 Hz and the pulse width is 1 ms, but the delay is adjustable. The second signal generator 12 is set to work in the gating mode, that is, the high-level effective mode. In this mode, only after receiving the high level of the fourth control signal does the second signal generator 12 start to output the camera trigger signal according to the preset delay and frequency. When outputting a third control signal to the laser amplifier 15, the system will output a burst signal with a duration of 1 - 2 ms to the camera system 16 according to the preset frequency and delay as the trigger signal for the camera.

[0047] Since the second signal generator 12 works in the gating mode and only outputs a signal when receiving the high level of the fourth control signal, by adjusting the delay of the third control signal output to the laser amplifier 15, it can be ensured that each camera in the camera system 16 can capture the laser pulse, enabling the system to precisely control the time relationship between camera exposure and laser output, and ensuring high-quality synchronous measurement under the condition of high-repetition-rate burst pulsed laser illumination.

[0048] In this embodiment, the 1 MHz sub-pulse frequency signal output by the first signal generator 11 is much higher than the processing speed that a single camera can handle. Through the multi-channel frequency division output of the second signal generator 12, the system successfully achieves the complete capture of 1 MHz high-frequency laser pulses. At the same time, the 0.1 Hz low-repetition-rate macro-pulse trigger signal generated by the third signal generator 13 ensures that the system realizes short-time high-frequency sampling at a lower repetition rate, avoiding problems such as equipment overheating and data redundancy that may be caused by long-time high-frequency operation.

[0049] Through the configuration of this embodiment, the system can use 5 ordinary cameras to replace expensive ultra-high-speed cameras under the condition of 1 MHz high-repetition-rate laser illumination, achieving precise capture and measurement of high-speed transient phenomena, significantly reducing the experimental cost, and improving the measurement efficiency. Embodiment 3

[0050] Reference Figure 5, an embodiment of the present invention provides a synchronous timing control system for high-repetition-rate pulsed laser illumination measurement. Preferably, the system includes a first signal generator 11, a second signal generator 12, a third signal generator 13, a laser seed source 14, a laser amplifier 15, and a camera system 16. Preferably, the sub-pulse frequency signal in this embodiment is 10KHz, the low-repetition-rate macro-pulse trigger signal is 0.1Hz, and there is only one camera in the camera system 16.

[0051] In a preferred embodiment, the first signal generator 11 serves as the reference clock source of the entire system, and simultaneously provides an output first control signal to the laser seed source 14 and a second control signal to the second signal generator 12. The frequencies of the first control signal and the second control signal are both 10KHz. The first control signal serves as the timing signal for the laser pulse output by the laser seed source 14, while the second control signal serves as the clock source signal for the second signal generator 12.

[0052] During actual photographing, the first signal generator 11 starts working in advance to ensure the normal output of the laser seed source 14, but at this time the laser has not been amplified yet; the third signal generator 13 outputs a third control signal with a frequency of 0.1Hz and a pulse width of 10ms to the laser amplifier 15, and the laser amplifier 15 starts working and outputs amplified pulsed laser. At the same time, the third signal generator 13 outputs a fourth control signal with a delay-adjustable frequency of 0.1Hz and a pulse width of 10ms to the gating input terminal of the second signal generator 12. The second signal generator 12 is set to work in the gating mode. In this mode, a trigger signal is only output when the input signal is at a high level; after receiving the high-level signal, the second signal generator 12 starts to output a camera trigger signal according to the preset delay and frequency. Each time a trigger signal is output to the laser amplifier 15, a burst signal with a duration of 10ms is given to the camera system 16 according to the preset frequency and delay as the trigger signal for the camera.

[0053] Since the second signal generator 12 works in the gating mode and only outputs a signal when it receives the fourth control signal, the delay of the third control signal given to the laser amplifier 15 is adjusted to ensure that each frame of the camera can capture the laser pulse.

[0054] Those skilled in the art can understand that, except for features that are mutually exclusive, any combination can be used to combine all the features disclosed in this specification (including the accompanying claims, abstract, and drawings), as well as all the processes or units of any method or device so disclosed. Unless otherwise explicitly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) can be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

Claims

1. A synchronous timing control system for high repetition rate pulsed laser illumination measurement, characterized in that: It includes a first signal generator, a second signal generator, a third signal generator, a laser seed source, a laser amplifier and a camera system; The first signal generator is used to output a first control signal to the laser seed source, and simultaneously output a second control signal as a clock source signal to the second signal generator; the first control signal and the second control signal are both sub-pulse frequency signals; The third signal generator is used to output a third control signal to the laser amplifier, and simultaneously output a fourth control signal to the second signal generator; the third control signal and the fourth control signal are both low repetition rate macro pulse trigger signals; The second signal generator generates a camera trigger signal according to the second control signal, and outputs the camera trigger signal to the camera system only within a high level range of the fourth control signal.

2. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 1, characterized in that: The first control signal output by the first signal generator has the same frequency as the second control signal.

3. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 2, characterized in that: The frequency of the sub-pulse frequency signal is higher than the maximum shooting frequency that can be achieved when a single camera in the camera system is working.

4. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 1, characterized in that: The third control signal and the fourth control signal output by the third signal generator have the same frequency and pulse width, and the relative delay is adjustable.

5. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 4, characterized in that: The third signal generator is configured to operate by internal triggering, or to operate by receiving an external trigger signal, so that the third signal generator can be synchronized with an external device.

6. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 4, characterized in that: The frequency of the low repetition rate macro pulse trigger signal is lower than the frequency of the sub pulse frequency signal.

7. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 1, characterized in that: The laser amplifier amplifies only the laser sub-pulses within the high level range according to the high level range of the third control signal.

8. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 1, characterized in that: The second signal generator can perform frequency division processing on the second control signal to generate the camera trigger signal.

9. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 8, characterized in that: The second signal generator is configured to operate in a gated mode and output the camera trigger signal only when a high level of the fourth control signal is received, so that the exposure time of the camera system is synchronized with the laser pulse amplified by the laser amplifier.

10. The synchronous timing control system for high repetition rate burst pulse laser illumination measurement according to claim 1, characterized in that: The camera system includes a single camera or multiple cameras; When the camera system includes multiple cameras, the second signal generator is provided with multiple output ports, and the delay and pulse width between the camera trigger signals output by each output port can be adjusted individually to adapt to the synchronous shooting of multiple cameras in the camera system.

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