Method and device for accurately controlling signal trigger pulse energy of ultrafast laser

Abstract

The invention provides an ultrafast laser signal trigger pulse energy accurate control method and device. The method comprises the following steps: acquiring period interval time and expected energy storage time of an external trigger signal; obtaining an energy balance parameter according to the period interval time and the expected energy storage time of the external trigger signal; performing energy distribution on the laser pulse energy according to the energy balance parameter; amplifying the laser pulse energy after energy distribution to obtain high pulse energy; and releasing the high pulse energy according to an external trigger signal. According to the method for controlling the pulse energy output of the laser through the cycle time of an external trigger signal, the seed source energy of the laser is stored or released so as to obtain balanced seed source energy, and the balanced seed source energy is amplified through an energy amplifier; the obtained high pulse energy is ensured to have good consistency, and damage of the high pulse energy to internal components of the laser is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of ultrafast solid-state laser control technology, and in particular to a method and apparatus for precise control of the energy of an ultrafast laser signal trigger pulse. Background Technology

[0002] Lasers are widely used in industry, medicine, and military fields. Common lasers include liquid lasers, gas lasers, fiber lasers, and solid-state lasers. Solid-state lasers, with their advantages of long lifespan, high beam quality, and stable power, are frequently used in applications with high optical performance requirements. Especially in ultrafast solid-state laser applications, precise control of pulse energy triggered by external signals is one of the key challenges. Precise control of pulse energy through external triggering can solve various common problems in these applications. In conventional ultrafast solid-state laser applications, the pulse energy control of solid-state lasers is becoming increasingly stringent, particularly during external frequency conversion processes, where a constant peak power output is required.

[0003] When existing ultrafast lasers are externally triggered, the pulse energy varies with the frequency of the trigger signal. At lower trigger frequencies, excessively high pulse energy can easily damage the laser and its internal components. Sometimes, even with a constant pulse energy, significant jitter between the emitted light signal and the pulse signal makes it impossible to control the emission position, which is unacceptable in many manufacturing processes. Therefore, achieving precise control of laser pulse energy is a pressing problem that needs to be solved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and apparatus for precisely controlling the pulse energy triggered by an external signal in an ultrafast laser.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for precise control of the energy of an ultrafast laser signal trigger pulse, comprising:

[0006] S1. Obtain the periodic interval and expected energy storage time of the external trigger signal;

[0007] S2. Based on the periodic interval of the external trigger signal and the expected energy storage time, obtain the energy balance parameters, which include the energy release time and the actual energy storage time.

[0008] S3. Distribute the laser pulse energy according to the energy balance parameters;

[0009] S4. Amplify the energy of the laser pulse after energy distribution to obtain high pulse energy;

[0010] S5. Release high pulse energy according to external trigger signal.

[0011] Furthermore, in step S1, the step of obtaining the periodic interval of the external trigger signal includes:

[0012] S101, Reset to zero and start timing;

[0013] S102. Determine if there is an external trigger signal. If yes, stop the timer and obtain the current time duration.

[0014] S103. Use the current timing duration as the period interval of the external trigger signal;

[0015] S104, Return to step S101.

[0016] Furthermore, in step S2, the step of obtaining the energy balance parameters based on the period interval of the external trigger signal and the expected energy storage time also includes:

[0017] S201. Determine whether the period interval of the external trigger signal is greater than the expected energy storage time. If yes, proceed to step S202; otherwise, proceed to step S204.

[0018] S202. Use the expected energy storage time as the actual energy storage time;

[0019] S203. Calculate the difference between the period interval of the external trigger signal and the expected energy storage time, and use this difference as the energy release time.

[0020] S204. Use the period interval of the external trigger signal as the actual energy storage time, and make the energy release time equal to 0.

[0021] Furthermore, in step S3, the laser is activated during the energy release time to release the laser pulse energy; and the laser is turned off during the actual energy storage time to store the laser pulse energy.

[0022] Furthermore, step S5 also includes the step of determining whether the triggering condition is met; otherwise, returning to step S3.

[0023] This invention also relates to a device for precise control of the energy of an ultrafast laser signal trigger pulse, comprising:

[0024] The acquisition module is used to acquire the period interval and expected energy storage time of the external trigger signal;

[0025] The judgment module is used to obtain energy balance parameters based on the period interval of the external trigger signal and the expected energy storage time. The energy balance parameters include energy release time and actual energy storage time.

[0026] The pulse energy equalization module is used to distribute the laser pulse energy according to the energy equalization parameters;

[0027] The energy amplification module is used to amplify the energy of the distributed laser pulses to obtain high pulse energy.

[0028] The pulse energy release module is used to release high pulse energy according to an external trigger signal.

[0029] Furthermore, it also includes a timing module, which is used to reset and start timing, stop timing when there is an external trigger signal, obtain the current timing duration, and use the current timing duration as the periodic interval time of the external trigger signal.

[0030] Furthermore, it also includes a calculation module, which is used to calculate the difference between the period interval of the external trigger signal and the expected energy storage time, and use the difference as the energy release time.

[0031] The judgment module is also used to determine whether the period interval of the external trigger signal is greater than the expected energy storage time. If so, the expected energy storage time is taken as the actual energy storage time.

[0032] Furthermore, the pulse energy equalization module is also used to activate the laser to release laser pulse energy during the energy release time and to shut down the laser to store laser pulse energy during the actual energy storage time.

[0033] Furthermore, the judgment module is also used to determine whether the triggering condition is met. If it is not met, the laser pulse energy is redistributed through the pulse energy equalization module.

[0034] The beneficial effects of this invention are as follows: It provides a method for controlling the output of laser pulse energy by means of the period of an external trigger signal, so as to realize the storage or release of laser seed source energy to obtain balanced seed source energy. After the balanced seed source energy is amplified by an energy amplifier, the high pulse energy obtained is guaranteed to have good consistency, effectively avoiding damage to the internal components of the laser by high pulse energy. Attached Figure Description

[0035] The specific process and structure of the present invention are described in detail below with reference to the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the overall process of the method for precise control of ultrafast laser signal trigger pulse energy according to the present invention;

[0037] Figure 2 This is a schematic diagram of the process for obtaining the periodic interval time of the external trigger signal according to the present invention;

[0038] Figure 3This is a schematic diagram of the process of obtaining energy balance parameters based on the periodic interval of an external trigger signal and the expected energy storage time according to the present invention.

[0039] Figure 4 This is a schematic diagram illustrating the energy distribution of laser pulse energy based on energy balance parameters according to the present invention.

[0040] Figure 5 This is a schematic diagram illustrating the release of high pulse energy based on an external trigger signal according to the present invention;

[0041] Figure 6 This is a structural block diagram of the ultrafast laser signal trigger pulse energy precise control device of the present invention. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0044] Example

[0045] Please see Figures 1 to 3 This embodiment provides a method for precise control of the energy of an ultrafast laser signal trigger pulse, including:

[0046] S1. Obtain the periodic interval and expected energy storage time of the external trigger signal;

[0047] S2. Based on the periodic interval of the external trigger signal and the expected energy storage time, obtain the energy balance parameters, which include the energy release time and the actual energy storage time.

[0048] S3. Distribute the laser pulse energy according to the energy balance parameters;

[0049] S4. Amplify the energy of the distributed laser pulses to obtain high pulse energy;

[0050] S5. Release high pulse energy according to external trigger signal.

[0051] In this embodiment, when outputting laser pulse energy, energy needs to be stored before outputting to achieve the desired output pulse energy. However, since the external pulse triggering is random, the period interval of the external triggering signal is not fixed, and the pulse energy will change with the triggering frequency, resulting in unstable pulse energy output from the laser source. To solve this problem, it is necessary to obtain the period interval of the external triggering signal in real time and combine it with the expected energy storage time to balance and adjust the laser pulse energy.

[0052] By acquiring the period interval and expected energy storage time of the external trigger signal, energy balance parameters are obtained. The energy balance parameters include energy release time, actual energy storage time, and threshold judgment value. During the energy release time in the energy balance parameters, excess laser pulse energy is released, and during the actual energy storage time, the laser pulse energy is stored to balance and distribute it, thereby ensuring that the pulse energy output by the laser source remains consistent and avoiding damage to the laser source caused by excessively high laser pulse energy.

[0053] The desired output pulse energy is determined by the threshold judgment value and the energy storage time, respectively. The relationship between the desired output pulse energy, the threshold judgment value, and the energy storage time can be expressed by the formula:

[0054] P = aΔT / ΔF,

[0055] Where P represents the desired output pulse energy, ΔT represents the period of the output pulse energy at the desired frequency, i.e., the energy storage time, ΔF represents the threshold judgment value, and a is the scaling factor.

[0056] The desired output pulse energy P is inversely proportional to the threshold judgment value ΔF, and directly proportional to the energy storage time. Since both the desired output pulse energy P and the energy storage time ΔT are constants at the desired frequency, a fixed scaling factor a and a fixed threshold judgment value ΔF can be obtained. The scaling factor a is related to the digital-to-analog voltage accuracy, ranging from tens to hundreds. When using 8-bit digital-to-analog voltage accuracy, the scaling factor is in the tens, and when using 16-bit digital-to-analog voltage accuracy, the scaling factor is in the hundreds.

[0057] In one embodiment, the method for acquiring the period interval of the external trigger signal has been improved to ensure accurate acquisition of the period interval of the external trigger signal. Specifically, in step S1, the step of acquiring the period interval of the external trigger signal includes:

[0058] S101, Reset to zero and start timing;

[0059] S102. Determine if there is an external trigger signal. If yes, stop the timer and obtain the current time duration.

[0060] S103. Use the current timing duration as the period interval of the external trigger signal;

[0061] S104, Return to step S101.

[0062] In this embodiment, the period interval of the external trigger signal is obtained by a timer. When the system is initialized and the external trigger pulse signal arrives, the timer is first cleared and the timing starts. When the next external trigger pulse signal arrives, the timing stops and the current timing duration is recorded. The current timing duration is used as the period interval of the external trigger signal. At the same time, the timer is cleared and the timing starts again.

[0063] In one implementation, the method for obtaining the energy balance parameters has been improved to ensure the consistency of laser pulse energy and the accuracy of the light emission position. Specifically, in step S2, the step of obtaining the energy balance parameters based on the period interval of the external trigger signal and the expected energy storage time further includes:

[0064] S201. Determine whether the period interval of the external trigger signal is greater than the expected energy storage time. If yes, proceed to step S202; otherwise, proceed to step S204.

[0065] S202. Use the expected energy storage time as the actual energy storage time;

[0066] S203. Calculate the difference between the period interval of the external trigger signal and the expected energy storage time, and use this difference as the energy release time.

[0067] S204. Use the period interval of the external trigger signal as the actual energy storage time, and make the energy release time equal to 0.

[0068] In this embodiment, please refer to Figure 4 In order to match the frequency of the external trigger signal to output laser pulse energy, while ensuring that the output laser pulse energy is not too large and will damage the laser, it is necessary to balance the laser pulse energy.

[0069] First, it is necessary to determine whether the period interval ΔT3 of the external trigger signal is greater than the expected energy storage time ΔT. If the period interval ΔT3 of the external trigger signal is greater than the expected energy storage time ΔT, then storing the laser pulse energy according to the period interval ΔT3 of the external trigger signal will result in excessively high laser pulse energy, which will damage the laser. Therefore, the laser pulse energy needs to be released in advance to ensure that the output laser pulse energy is not too high. At this time, the expected energy storage time ΔT is made equal to the actual energy storage time ΔT2. Then the period interval ΔT3 of the external trigger signal is equal to the energy release time ΔT1 plus the actual energy storage time ΔT2. The laser needs to release the excess laser pulse energy to reduce the output laser pulse energy.

[0070] Energy is stored during the actual energy storage time ΔT2, and the laser pulse energy is output with the desired output energy when the external trigger signal arrives, thus ensuring that the laser outputs laser pulse energy of appropriate magnitude at the accurate position.

[0071] When the period interval ΔT3 of the external trigger signal is less than or equal to the expected energy storage time ΔT, the period interval ΔT3 of the external trigger signal is made equal to the actual energy storage time ΔT2, and the energy release time is zero. This ensures that the laser responds to the external trigger signal in a timely manner, thereby ensuring the accuracy of the laser's light output position.

[0072] In one embodiment, the method for distributing laser pulse energy has been improved to ensure a balanced distribution of laser pulse energy. Specifically, in step S3, the laser is activated during the energy release time to release laser pulse energy; and the laser is deactivated during the actual energy storage time to store laser pulse energy.

[0073] In this embodiment, in order to ensure that the laser pulse energy output by the laser does not exceed the expected output pulse energy, when the energy release time is not zero, the laser needs to be started to release the laser pulse energy during the energy release time; while in order to ensure that the expected output pulse energy is reached or close to the expected output pulse energy, the laser is turned off to store energy during the actual energy storage time.

[0074] In one embodiment, the output method of the laser pulse energy is improved to ensure the consistency of the output energy intensity of the laser pulse energy. Specifically, step S5 further includes the step of: determining whether the triggering condition is met; otherwise, returning to step S3.

[0075] In this embodiment, please refer to Figure 5The system determines whether the triggering condition is met by judging whether the actual energy storage time ΔT2 has been reached. When the timing duration meets the actual energy storage time ΔT2, it is determined that the high pulse energy has reached the expected output pulse energy, and the high pulse energy can be triggered to output, thus ensuring the accuracy of the light output position of the high pulse energy.

[0076] When the period interval ΔT3 of the external trigger signal is greater than or equal to the actual energy storage time ΔT2, high pulse energy is output; when the period interval ΔT3 of the external trigger signal is less than the actual energy storage time ΔT2, normal pulse energy is output.

[0077] This invention also relates to a device for precise control of the energy of an ultrafast laser signal trigger pulse, comprising:

[0078] The acquisition module is used to acquire the period interval and expected energy storage time of the external trigger signal;

[0079] The judgment module is used to obtain energy balance parameters based on the period interval of the external trigger signal and the expected energy storage time. The energy balance parameters include energy release time and actual energy storage time.

[0080] The pulse energy equalization module is used to distribute the laser pulse energy according to the energy equalization parameters;

[0081] The energy amplification module is used to amplify the energy of the distributed laser pulses to obtain high pulse energy.

[0082] The pulse energy release module is used to release high pulse energy according to an external trigger signal.

[0083] Please see Figure 6 In this embodiment, the laser source is a seed source signal generator, which is sequentially connected to the pulse energy equalization module, the energy amplification module, and the pulse energy release module. The acquisition module is sequentially connected to the judgment module and the pulse energy equalization module. The seed source signal generator is used to generate laser signals with short pulse duration, narrow wavelength, and weak power. The pulse frequency of the seed source signal generator is above 25MHz. Preferably, the seed source signal generator is a picosecond or femtosecond solid-state laser.

[0084] In order to balance the laser pulse energy of the seed source signal generator, the acquisition module obtains the period interval time and expected energy storage time of the external trigger signal, and then the judgment module obtains the energy balance parameters based on the period interval time and expected energy storage time of the external trigger signal. The energy balance parameters include energy release time and actual energy storage time.

[0085] The pulse energy equalization module releases excess laser pulse energy through the energy release time in the energy equalization parameters and stores energy in the laser pulse energy through the actual energy storage time to balance and distribute it, so that the pulse energy output by the seed source signal generator remains consistent, thereby avoiding damage to the laser source caused by excessively high laser pulse energy.

[0086] In one embodiment, the method for obtaining the periodic interval of the external trigger signal is improved to ensure accurate acquisition of the periodic interval of the external trigger signal. Specifically, it also includes a timing module, which is used to reset and start timing, stop timing when an external trigger signal is received, obtain the current timing duration, and use the current timing duration as the periodic interval of the external trigger signal.

[0087] In this embodiment, the timing module obtains the period interval of the external trigger signal through a timer. When the system is initialized or the external trigger pulse signal arrives, the timer is first cleared and the timing starts. When the next external trigger pulse signal arrives, the timing stops and the current timing duration is recorded. The current timing duration is used as the period interval of the external trigger signal. At the same time, the timer is cleared and the timing starts again.

[0088] In one implementation, the method for obtaining energy balance parameters has been improved to ensure the consistency of laser pulse energy and the accuracy of the light emission position. Specifically, it also includes a calculation module, which calculates the difference between the period interval of the external trigger signal and the expected energy storage time, and uses this difference as the energy release time.

[0089] The judgment module is also used to determine whether the period interval of the external trigger signal is greater than the expected energy storage time. If so, the expected energy storage time is taken as the actual energy storage time.

[0090] In this embodiment, please refer to Figure 5 In order to match the frequency of the external trigger signal to output laser pulse energy, while ensuring that the output laser pulse energy is not too large and will damage the laser, it is necessary to balance the laser pulse energy.

[0091] The judgment module determines whether the period interval of the external trigger signal is greater than the expected energy storage time. When the period interval of the external trigger signal is greater than the expected energy storage time, storing laser pulse energy according to the period interval of the external trigger signal will produce excessively high laser pulse energy, which may damage the laser. Therefore, the laser pulse energy needs to be released in advance to ensure that the output laser pulse energy is not too high. At this time, the expected energy storage time is made equal to the actual energy storage time. The calculation module then calculates the difference between the period interval of the external trigger signal and the actual energy storage time, and uses this difference as the energy release time.

[0092] The laser can release excess laser pulse energy during the energy release time to reduce the output laser pulse energy; and store energy during the subsequent actual energy storage time to ensure that when an external trigger signal arrives, it can output the desired laser pulse energy, thus ensuring that the laser outputs the appropriate size of laser pulse energy at the accurate position.

[0093] When the period interval of the external trigger signal is less than or equal to the expected energy storage time, the period interval of the external trigger signal is made equal to the actual energy storage time, and the energy release time is zero. This ensures that the laser responds to the external trigger signal in a timely manner, thereby ensuring the accuracy of the laser's output position.

[0094] In one embodiment, the method for distributing laser pulse energy has been improved to ensure that the laser pulse energy is balanced. The pulse energy equalization module is also used to activate the laser to release laser pulse energy during the energy release time and to deactivate the laser to store laser pulse energy during the actual energy storage time.

[0095] In this embodiment, in order to ensure that the laser pulse energy output by the laser does not exceed the expected output pulse energy, when the energy release time is not zero, the laser needs to be started to release the laser pulse energy during the energy release time; while in order to ensure that the expected output pulse energy is reached or close to the expected output pulse energy, the laser is turned off to store energy during the actual energy storage time.

[0096] In one implementation, the output method of the laser pulse energy has been improved to ensure the consistency of the output energy intensity of the laser pulse energy. The judgment module is also used to determine whether the triggering condition is met; if not, the laser pulse energy is redistributed through the pulse energy equalization module.

[0097] In this embodiment, the judgment module determines whether the actual energy storage time has been reached to determine whether the triggering condition is met. When the timing duration meets the actual energy storage time, it is determined that the high pulse energy has reached the expected output pulse energy, and the high pulse energy can be triggered to output, thereby ensuring the accuracy of the light output position of the high pulse energy.

[0098] If the triggering condition is not met, the high pulse energy is redistributed through the pulse energy equalization module to meet the output requirements.

[0099] As can be seen from the above description, the beneficial effects of the present invention are as follows: It provides a method for controlling the output of laser pulse energy by means of the period of an external trigger signal, so as to realize the storage or release of laser seed source energy to obtain balanced seed source energy. After the balanced seed source energy is amplified by an energy amplifier, the high pulse energy obtained is guaranteed to have good consistency, effectively avoiding damage to the internal components of the laser by high pulse energy.

[0100] It will be readily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

[0101] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for precisely controlling the energy of a signal trigger pulse of an ultrafast laser, comprising: S1. obtaining a cycle interval time of an external trigger signal and an expected energy storage time; S2. obtaining an energy balance parameter according to the cycle interval time of the external trigger signal and the expected energy storage time, the energy balance parameter comprising an energy release time and an actual energy storage time; S3. distributing laser pulse energy according to the energy balance parameter; S4. amplifying the laser pulse energy after the distribution to obtain high pulse energy; S5. releasing the high pulse energy according to the external trigger signal.

2. The method of claim 1, wherein the method further comprises: determining a trigger pulse energy of the ultrafast laser signal trigger pulse; and adjusting the trigger pulse energy of the ultrafast laser signal trigger pulse to a target trigger pulse energy. In step S1, the step of obtaining the cycle interval time of the external trigger signal comprises: S101. clearing and starting timing; S102. determining whether there is an external trigger signal, yes to stop timing and obtain the duration of the current timing; S103. taking the duration of the current timing as the cycle interval time of the external trigger signal; S104. returning to step S101.

3. The method of claim 1, wherein the method further comprises: determining a trigger pulse energy of the ultrafast laser signal trigger pulse; and adjusting the trigger pulse energy of the ultrafast laser signal trigger pulse to a target trigger pulse energy. In step S2, the step of obtaining the energy balance parameter according to the cycle interval time of the external trigger signal and the expected energy storage time further comprises: S201. determining whether the cycle interval time of the external trigger signal is greater than the expected energy storage time, yes to step S202, otherwise to step S204; S202. taking the expected energy storage time as the actual energy storage time; S203. calculating the difference between the cycle interval time of the external trigger signal and the expected energy storage time, and taking the difference as the energy release time; S204. taking the cycle interval time of the external trigger signal as the actual energy storage time, and making the energy release time equal to 0.

4. The method of claim 1, wherein the method further comprises: determining a trigger pulse energy of the ultrafast laser signal trigger pulse; and adjusting the trigger pulse energy of the ultrafast laser signal trigger pulse to a target trigger pulse energy. In step S3, the laser is started to release the laser pulse energy during the energy release time, and the laser is closed to store the laser pulse energy during the actual energy storage time.

5. The method of claim 1, wherein the method further comprises: determining a trigger pulse energy of the ultrafast laser signal trigger pulse; and adjusting the trigger pulse energy of the ultrafast laser signal trigger pulse to a target trigger pulse energy. In step S5, it further comprises the step of determining whether the trigger condition is established, otherwise returning to step S3.

6. An ultrafast laser signal trigger pulse energy precision control device, characterized in that, comprises: an obtaining module for obtaining a cycle interval time of an external trigger signal and an expected energy storage time; a determining module for obtaining an energy balance parameter according to the cycle interval time of the external trigger signal and the expected energy storage time, the energy balance parameter comprising an energy release time and an actual energy storage time; a pulse energy balance module for distributing laser pulse energy according to the energy balance parameter; an energy amplification module for amplifying the laser pulse energy after the distribution to obtain high pulse energy; a pulse energy release module for releasing the high pulse energy according to the external trigger signal.

7. The ultrafast laser signal trigger pulse energy precision control device of claim 6, wherein: It further comprises a timing module for clearing and starting timing, stopping timing when there is an external trigger signal, obtaining the duration of the current timing, and taking the duration of the current timing as the cycle interval time of the external trigger signal.

8. The ultrafast laser signal trigger pulse energy precision control device of claim 6, wherein: It further comprises a calculating module for calculating the difference between the cycle interval time of the external trigger signal and the expected energy storage time, and taking the difference as the energy release time; the determining module is further configured to determine whether the cycle interval time of the external trigger signal is greater than the expected energy storage time, yes to take the expected energy storage time as the actual energy storage time.

9. The ultrafast laser signal trigger pulse energy precision control device of claim 6, wherein: The pulse energy equalization module is also configured to start the laser to release the laser pulse energy during an energy release time; and stop the laser to store the laser pulse energy during an actual energy storage time.

10. The ultrafast laser signal trigger pulse energy precision control device of claim 6, wherein: The judging module is also configured to judge whether a trigger condition is established, and if not, re-distribute the laser pulse energy by the pulse energy equalization module.

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