Pulse control electro-optical Q driving power supply

Abstract

The invention discloses a pulse control electro-optical Q driving power supply capable of improving Q switching frequency, which comprises a pulse control module used for generating and outputting a first pulse signal and a second pulse signal which are interlocked; the isolation optocoupler driving module is used for outputting the first pulse signal and the second pulse signal in an isolated manner and performing push-pull amplification on the first pulse signal and the second pulse signal; the isolation power supply is connected with the power supply end of the isolation optocoupler driving module and is used for supplying power to the isolation optocoupler driving module; the high-voltage DC power supply is used for providing DC high voltage; the first MOS power module is connected between the high-voltage direct-current power supply and a high-voltage output end and is used for loading high voltage to the electro-optical Q converter under the control of the first pulse signal after push-pull amplification; and the second MOS power module is connected between the high-voltage output end and the ground of the high-voltage direct-current power supply and is used for removing high voltage for the electro-optical Q converter under the control of the second pulse signal after push-pull amplification.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser application technology, in particular to a pulse control electro-optical Q driving power supply. BACKGROUND

[0002] In the field of laser technology application, the electro-optical Q switching power supply controls the opening and closing of the electro-optical switch, uses the electro-optical effect of the electro-optical crystal, realizes the pressurization and decompression of the electro-optical crystal, so as to realize the change of the optical polarization state in a certain way, and realizes the electro-optical Q switching. In the application of ultrafast solid-state laser, the electro-optical Q switch is a key device for generating high peak power laser pulses. An important factor affecting the electro-optical efficiency of the electro-optical Q switching laser is the Q switch frequency, which is mainly determined by the driving circuit of the Q switch. How to improve the Q switch frequency has always been a concern. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a pulse control electro-optical Q driving power supply which can improve the Q switch frequency.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] A pulse control electro-optical Q driving power supply comprises: a pulse control module for generating and outputting interlocked first and second pulse signals; an isolated optocoupler driving module for isolating and outputting the first and second pulse signals and performing push-pull amplification on the first and second pulse signals; an isolated power supply connected to a power supply end of the isolated optocoupler driving module for supplying power to the isolated optocoupler driving module; a high-voltage DC power supply for providing DC high voltage; a first MOS power module connected between the high-voltage DC power supply and a high-voltage output end of the pulse control electro-optical Q driving power supply for loading high voltage on an electro-optical Q converter under the control of the push-pull amplified first pulse signal; and a second MOS power module connected between the high-voltage output end of the pulse control electro-optical Q driving power supply and the ground of the high-voltage DC power supply for removing high voltage from the electro-optical Q converter under the control of the push-pull amplified second pulse signal.

[0006] Preferably, the isolated optocoupler driving module comprises a first isolated optocoupler driving module and a second isolated optocoupler driving module, the first isolated optocoupler driving module is used for isolating and outputting the first pulse signal and performing push-pull amplification on the first pulse signal, and the second isolated optocoupler driving module is used for isolating and outputting the second pulse signal and performing push-pull amplification on the second pulse signal.

[0007] Preferably, the first MOS power module includes at least one MOS transistor, which is connected in series between the high-voltage DC power supply and the high-voltage output terminal of the pulse-controlled electro-optical Q-drive power supply. The output terminal of the first isolation optocoupler drive module is connected to the control terminal of the MOS transistor in the first MOS power module. The second MOS power module includes at least one MOS transistor, which is connected in series between the ground of the isolation power supply and the high-voltage output terminal of the pulse-controlled electro-optical Q-drive power supply. The output terminal of the second isolation optocoupler drive module is connected to the control terminal of the MOS transistor in the second MOS power module.

[0008] Preferably, the first isolation optocoupler driving module includes an isolation optocoupler and a first current-limiting resistor, and the second isolation optocoupler driving module includes an isolation optocoupler and a second current-limiting resistor. The anode of the LED of the isolation optocoupler in the first isolation optocoupler driving module is connected to the first output terminal of the pulse control module, and the cathode of the LED of the isolation optocoupler in the first isolation optocoupler driving module is connected to the second output terminal of the pulse control module through the first current-limiting resistor. The anode of the LED of the isolation optocoupler in the second isolation optocoupler driving module is connected to the second output terminal of the pulse control module, and the cathode of the LED of the isolation optocoupler in the second isolation optocoupler driving module is connected to the first output terminal of the pulse control module through the second current-limiting resistor. The first output terminal of the pulse control module is used to output a first pulse signal, and the second output terminal of the pulse control module is used to output a second pulse signal. The output terminal of the isolation optocoupler in the first isolation optocoupler driving module is connected to the control terminal of the first MOS power module, and the output terminal of the isolation optocoupler in the second isolation optocoupler driving module is connected to the control terminal of the second MOS power module.

[0009] Preferably, the isolation optocoupler driving module includes isolation optocouplers U1, U2, U3, and U4, resistors R5 and R6, and the isolation power supply includes a first power supply, a second power supply, a third power supply, and a fourth power supply. The first MOS power module includes MOS transistors Q1 and Q2, and the second MOS power module includes MOS transistors Q3 and Q4. The anodes of the LEDs of isolation optocouplers U1 and U2 are respectively connected to the first output terminal of the pulse control module. The cathodes of the LEDs of isolation optocouplers U1 and U2 are connected to the second output terminal of the pulse control module through resistor R5. The anodes of the LEDs of isolation optocouplers U3 and U4 are respectively connected to the second output terminal of the pulse control module, and the cathodes of the LEDs of isolation optocouplers U3 and U4 are connected to the first output terminal of the pulse control module through resistor R6. The first output terminal of the pulse control module is used to output a first pulse signal. The second output terminal of the pulse control module is used to output the second pulse signal; the power supply terminals of isolation optocouplers U1, U2, U3, and U4 are connected to the first power supply, second power supply, third power supply, and fourth power supply, respectively; the output terminal of isolation optocoupler U1 is connected to the gate of MOSFET Q1, the source of MOSFET Q1 is connected to the high-voltage DC power supply, and the drain of MOSFET Q1 is connected to the ground of the first power supply; the output terminal of isolation optocoupler U2 is connected to the gate of MOSFET Q2, and the source of MOSFET Q2 is connected to the ground of the first power supply. The output terminal of the isolation optocoupler U3 is connected to the drain of MOSFET Q1, the drain of MOSFET Q2 is connected to the ground of the second power supply and the high-voltage output terminal of the pulse-controlled electro-optic Q-drive power supply; the output terminal of the isolation optocoupler U3 is connected to the gate of MOSFET Q3, the source of MOSFET Q3 is connected to the high-voltage output terminal of the pulse-controlled electro-optic Q-drive power supply, and the drain of MOSFET Q3 is connected to the ground of the third power supply; the output terminal of the isolation optocoupler U4 is connected to the gate of MOSFET Q4, the source of MOSFET Q4 is connected to the drain of MOSFET Q3, and the drain of MOSFET Q4 is connected to the ground of the fourth power supply.

[0010] Preferably, a resistor R1 is connected between the output terminal of the isolation optocoupler U1 and the ground of the first power supply; a resistor R2 is connected between the output terminal of the isolation optocoupler U2 and the ground of the second power supply; a resistor R3 is connected between the output terminal of the isolation optocoupler U3 and the ground of the third power supply; and a resistor R4 is connected between the output terminal of the isolation optocoupler U4 and the ground of the fourth power supply.

[0011] Preferably, a high-voltage capacitor C1 is connected between the source of the MOS transistor Q4 and the ground of the high-voltage DC power supply.

[0012] Preferably, a current-limiting resistor is connected between the output terminal of the isolation optocoupler U1 and the gate of the MOS transistor Q1; a current-limiting resistor is connected between the output terminal of the isolation optocoupler U2 and the gate of the MOS transistor Q2; a current-limiting resistor is connected between the output terminal of the isolation optocoupler U3 and the gate of the MOS transistor Q3; and a current-limiting resistor is connected between the output terminal of the isolation optocoupler U4 and the gate of the MOS transistor Q4.

[0013] Preferably, the electro-optic Q converter uses a BBO crystal, KDP crystal, KTP crystal, or RTP crystal.

[0014] Preferably, the first pulse signal and the second pulse signal have a dead-time control period within a unit cycle, and during the dead-time control period, both the first pulse signal and the second pulse signal are at a high level or a low level.

[0015] The beneficial technical effects of the present invention are as follows: The above-mentioned pulse-controlled electro-optic Q-drive power supply uses an isolated optocoupler drive module to push-pull amplify two interlocked pulse signals and directly outputs them to two MOS power modules. Compared with the prior art that uses inductors to drive MOS power devices, the inductor-to-instrument process is eliminated. Moreover, the pulse signal is amplified by push-pull, resulting in a larger current, which can quickly turn the MOS power modules on and off, realize the rapid turn-on and turn-off of the high-voltage DC power supply, and improve the Q-switching frequency. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of the pulse-controlled electro-optic Q-drive power supply of the present invention;

[0017] Figure 2 This is a pulse interlock diagram of the pulse-controlled electro-optic Q-drive power supply of the present invention;

[0018] Figure 3 This is a circuit diagram of the pulse-controlled electro-optic Q-drive power supply of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand the purpose, technical solution, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] This invention provides a pulse-controlled electro-optic Q-drive power supply.

[0021] like Figure 1As shown, in one embodiment of the present invention, the pulse-controlled electro-optic Q-drive power supply includes a pulse control module 10, an isolated optocoupler drive module 20, an isolated power supply 30, a high-voltage DC power supply 40, a first MOS power module 50, and a second MOS power module 60. The pulse control module 10 is used to generate and output an interlocked first pulse signal PWM1 and a second pulse signal PWM2; the isolated optocoupler drive module 20 is used to isolate the first pulse signal PWM1 and the second pulse signal PWM2 and amplify them in a push-pull manner; the isolated power supply 30 is connected to the power supply terminal of the isolated optocoupler drive module 20 and is used to supply power to the isolated optocoupler drive module 20; the high-voltage DC power supply 40 is used to provide DC high voltage; the first MOS power module 50 is connected between the high-voltage DC power supply 40 and the high-voltage output terminal HV_OUTPUT of the pulse-controlled electro-optic Q-drive power supply and is used to apply high voltage to the electro-optic Q-converter under the control of the first pulse signal after push-pull amplification; the second MOS power module 60 is connected between the high-voltage output terminal HV_OUTPUT of the pulse-controlled electro-optic Q-drive power supply and the ground (GND) of the high-voltage DC power supply 40 and is used to remove high voltage from the electro-optic Q-converter under the control of the second pulse signal after push-pull amplification.

[0022] In this embodiment, the electro-optic Q converter uses a BBO crystal; in other embodiments, the electro-optic Q converter may also use other electro-optic crystals such as KDP crystals, KTP crystals, or RTP crystals.

[0023] like Figure 2 As shown, the first pulse signal PWM1 and the second pulse signal PWM2 are interlocked. When the first pulse signal PWM1 is high, the second pulse signal PWM2 is low; when the first pulse signal PWM1 is low, the second pulse signal PWM2 is high. The first pulse signal PWM1 and the second pulse signal PWM2 have a dead-time control period ΔT within a unit cycle. In this embodiment, the dead-time control period ΔT includes a set time period after the pulse signal switches from high to low and a set time period before the pulse signal switches from low to high. Therefore, both the first pulse signal PWM1 and the second pulse signal PWM2 are low within the dead-time control period ΔT. In other embodiments, the dead-time control period ΔT includes a set time period before the pulse signal switches from high to low and a set time period after the pulse signal switches from low to high. Therefore, both the first pulse signal PWM1 and the second pulse signal PWM2 are high within the dead-time control period ΔT.

[0024] The isolated optocoupler driving module 20 includes a first isolated optocoupler driving module and a second isolated optocoupler driving module. The first isolated optocoupler driving module isolates and outputs a first pulse signal PWM1 and amplifies it via push-pull amplification. The second isolated optocoupler driving module isolates and outputs a second pulse signal PWM2 and amplifies it via push-pull amplification. Finally, the amplified first pulse signal PWM1 and second pulse signal PWM2 are respectively supplied to the first MOS power module 50 and the second MOS power module 60. By controlling the conduction and cutoff of the first MOS power module 50 and the second MOS power module 60, the high-voltage DC power supply is turned on and off, thereby applying and removing high voltage to the electro-optic Q converter, thus changing the polarization state of the optical path.

[0025] The first MOS power module 50 includes at least one MOS transistor. The number of MOS transistors can be one, two, three, or any other number. The MOS transistor in the first MOS power module 50 is connected in series between the high-voltage DC power supply 40 and the high-voltage output terminal HV_OUTPUT of the pulse-controlled electro-optical Q-drive power supply. The output terminal of the first isolated optocoupler drive module is connected to the control terminal of the MOS transistor in the first MOS power module 50. The second MOS power module 60 includes at least one MOS transistor. The number of MOS transistors can be one, two, three, or any other number. The MOS transistor in the second MOS power module 60 is connected in series between the ground of the isolated power supply 30 and the high-voltage output terminal HV_OUTPUT of the pulse-controlled electro-optical Q-drive power supply. The output terminal of the second isolated optocoupler drive module is connected to the control terminal of the MOS transistor in the second MOS power module 30.

[0026] The first isolation optocoupler driving module includes an isolation optocoupler and a first current-limiting resistor, and the number of isolation optocouplers in the first isolation optocoupler driving module is equal to the number of MOS in the first MOS power module 50; the second isolation optocoupler driving module includes an isolation optocoupler and a second current-limiting resistor, and the number of isolation optocouplers in the second isolation optocoupler driving module is equal to the number of MOS in the second MOS power module 60. The anode of the LED in the first isolation optocoupler driving module is connected to the first output terminal of the pulse control module 10, and the cathode of the LED in the first isolation optocoupler driving module is connected to the second output terminal of the pulse control module 10 through a first current-limiting resistor. The anode of the LED in the second isolation optocoupler driving module is connected to the second output terminal of the pulse control module 10, and the cathode of the LED in the second isolation optocoupler driving module is connected to the first output terminal of the pulse control module 10 through a second current-limiting resistor. The first output terminal of the pulse control module 10 is used to output a first pulse signal, and the second output terminal of the pulse control module 10 is used to output a second pulse signal. The output terminal of the isolation optocoupler in the first isolation optocoupler driving module is connected to the control terminal of the first MOS power module 50, and the output terminal of the isolation optocoupler in the second isolation optocoupler driving module is connected to the control terminal of the second MOS power module 60.

[0027] like Figure 3 As shown, in this embodiment, the isolated optocoupler driving module 20 includes isolated optocouplers U1, U2, U3, and U4, resistors R5 and R6. Isolated optocouplers U1, U2, and R5 constitute a first isolated optocoupler driving module, as do isolated optocouplers U3, U4, and R6. The isolated power supply 30 includes a first power supply, a second power supply, a third power supply, and a fourth power supply. The first MOS power module 50 includes MOS transistors Q1 and Q2, and the second MOS power module 60 includes MOS transistors Q3 and Q4.

[0028] The anodes of the LEDs of isolation optocouplers U1 and U2 are connected to the first output terminal of the pulse control module 10, respectively. The cathodes of the LEDs of isolation optocouplers U1 and U2 are connected to the second output terminal of the pulse control module 20 through resistor R5. The anodes of the LEDs of isolation optocouplers U3 and U4 are connected to the second output terminal of the pulse control module 10, respectively. The cathodes of the LEDs of isolation optocouplers U3 and U4 are connected to the first output terminal of the pulse control module 10 through resistor R6. The first output terminal of the pulse control module 10 is used to output a first pulse signal PWM1, and the second output terminal of the pulse control module 10 is used to output a second pulse signal PWM2.

[0029] The power supply terminals of the isolation optocouplers U1, U2, U3, and U4 are connected to the first power supply (VCC1), the second power supply (VCC2), the third power supply (VCC3), and the fourth power supply (VCC4), respectively. That is, the first power supply, the second power supply, the third power supply, and the fourth power supply provide power to the isolation optocouplers U1, U2, U3, and U4, respectively.

[0030] The output of isolation optocoupler U1 is connected to the gate of MOSFET Q1, the source of MOSFET Q1 is connected to the high-voltage DC power supply 40, and the drain of MOSFET Q1 is connected to the ground (GND1) of the first power supply. The output of isolation optocoupler U2 is connected to the gate of MOSFET Q2, the source of MOSFET Q2 is connected to the drain of MOSFET Q1, the drain of MOSFET Q2 is connected to the ground (GND2) of the second power supply and the high-voltage output terminal HV_OUTPUT of the pulse-controlled electro-optic Q drive power supply. The output of isolation optocoupler U3 is connected to the gate of MOSFET Q3, the source of MOSFET Q3 is connected to the high-voltage output terminal HV_OUTPUT of the pulse-controlled electro-optic Q drive power supply, and the drain of MOSFET Q3 is connected to the ground (GND3) of the third power supply. The output of isolation optocoupler U4 is connected to the gate of MOSFET Q4, the source of MOSFET Q4 is connected to the drain of MOSFET Q3, and the drain of MOSFET Q4 is connected to the ground (GND) of the fourth power supply.

[0031] In a preferred embodiment of the present invention, a resistor R1 is connected between the output terminal of the isolation optocoupler U1 and the ground (GND1) of the first power supply; a resistor R2 is connected between the output terminal of the isolation optocoupler U2 and the ground (GND2) of the second power supply; a resistor R3 is connected between the output terminal of the isolation optocoupler U3 and the ground (GND3) of the third power supply; and a resistor R4 is connected between the output terminal of the isolation optocoupler U4 and the ground (GND) of the fourth power supply.

[0032] In a preferred embodiment of the present invention, the high-voltage DC power supply 40 is used to provide high-voltage DC power from 2KV to 4KV, and a high-voltage capacitor C1 is connected between the source of the MOS transistor Q4 and the ground of the high-voltage DC power supply 40.

[0033] In a preferred embodiment of the present invention, a current-limiting resistor is connected between the output terminal of the isolation optocoupler U1 and the gate of the MOS transistor Q1; a current-limiting resistor is connected between the output terminal of the isolation optocoupler U2 and the gate of the MOS transistor Q2; a current-limiting resistor is connected between the output terminal of the isolation optocoupler U3 and the gate of the MOS transistor Q3; and a current-limiting resistor is connected between the output terminal of the isolation optocoupler U4 and the gate of the MOS transistor Q4.

[0034] The working principle of the pulse-controlled electro-optic Q-drive power supply in this embodiment is as follows:

[0035] When PWM1 is high and PWM2 is low, the LEDs of isolation optocouplers U1 and U2 are simultaneously turned on through current-limiting resistor R5, while the LEDs of isolation optocouplers U3 and U4 are reverse-biased and cut off through current-limiting resistor R6. When PWM1 is low and PWM2 is high, the LEDs of isolation optocouplers U1 and U2 are simultaneously turned on through current-limiting resistor R6, while the LEDs of isolation optocouplers U1 and U2 are reverse-biased and cut off through current-limiting resistor R5. When both PWM1 and PWM2 are high, or both are low, the LEDs of isolation optocouplers U1, U2, U3, and U4 are cut off. This interlocking control of PWM1 and PWM2 prevents the first MOS power module 50 and the second MOS power module 60 from being turned on simultaneously, effectively ensuring the safety and reliability of the devices.

[0036] When PWM1 is high and PWM2 is low, the internal push-pull circuit of isolation optocouplers U1 and U2 makes the output of isolation optocoupler U1 high, which drives the gate of MOSFET Q1 in the first MOSFET power module 50, turning on the source and drain of MOSFET Q1. At the same time, the output of isolation optocoupler U2 is also high, which drives the gate of MOSFET Q2 in the first MOSFET power module 50, turning on the source and drain of MOSFET Q2. Meanwhile, the second MOSFET power module 60 is cut off, and the high-voltage DC power supply 40 is connected to MOSFET Q1 and MOSFET Q2 to apply high voltage to the electro-optic Q converter; when PWM1 is low and PWM2 is low... When the voltage is high, the internal push-pull circuit of the isolation optocouplers U3 and U4 makes the output of the isolation optocoupler U3 high, which drives the gate of the MOS transistor Q3 in the second MOS power module 60, making the source and drain of the MOS transistor Q3 conduct. At the same time, the output of the isolation optocoupler U4 is also high, which drives the gate of the MOS transistor Q4 in the second MOS power module 60, making the source and drain of the MOS transistor Q4 conduct. Meanwhile, the first MOS power module 50 is cut off. The high voltage of the electro-optic Q converter is reduced through the MOS transistors Q3 and Q4, making the voltage instantaneously GND. Finally, the high voltage pulse output of the electro-optic Q converter is realized through fast pulse control.

[0037] The pulse-controlled electro-optic Q-drive power supply of the present invention utilizes an isolated optocoupler drive module to push-pull amplify two interlocked pulse signals and directly output them to two MOS power modules. Compared with the prior art that uses inductors to drive MOS power devices, this eliminates the inductor-to-instrument process. Moreover, the pulse signals are amplified by push-pull, resulting in a larger current, which enables rapid switching of the MOS power modules, achieving rapid switching of the high-voltage DC power supply and improving the Q-switching frequency.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent variations or modifications made within the scope of the claims should fall within the protection scope of the present invention.

Claims

1. A pulse-controlled electro-optic Q-drive power supply, characterized by, The pulse control electro-optical Q driving power supply comprises: a pulse control module for generating and outputting interlocked first and second pulse signals; an isolated optocoupler driving module for isolating and outputting the first and second pulse signals and push-pull amplifying the first and second pulse signals; an isolated power supply connected to a power supply end of the isolated optocoupler driving module for supplying power to the isolated optocoupler driving module; a high-voltage direct current power supply for providing direct current high voltage; a first MOS power module connected between the high-voltage direct current power supply and a high-voltage output end of the pulse control electro-optical Q driving power supply for loading the electro-optical Q converter with high voltage under the control of the push-pull amplified first pulse signal; a second MOS power module connected between the high-voltage output end of the pulse control electro-optical Q driving power supply and the ground of the high-voltage direct current power supply for removing high voltage from the electro-optical Q converter under the control of the push-pull amplified second pulse signal.

2. The pulse controlled electro-optic Q-drive power supply of claim 1, wherein, The isolated optocoupler driving module comprises a first isolated optocoupler driving module and a second isolated optocoupler driving module, the first isolated optocoupler driving module is used for isolating and outputting the first pulse signal and push-pull amplifying the first pulse signal, and the second isolated optocoupler driving module is used for isolating and outputting the second pulse signal and push-pull amplifying the second pulse signal.

3. The pulse controlled electro-optic Q-drive power supply of claim 2, wherein, The first MOS power module comprises at least one MOS tube, the MOS tube in the first MOS power module is connected in series between the high-voltage direct current power supply and the high-voltage output end of the pulse control electro-optical Q driving power supply, and the output end of the first isolated optocoupler driving module is connected to the control end of the MOS tube in the first MOS power module; the second MOS power module comprises at least one MOS tube, the MOS tube in the second MOS power module is connected in series between the ground of the isolated power supply and the high-voltage output end of the pulse control electro-optical Q driving power supply, and the output end of the second isolated optocoupler driving module is connected to the control end of the MOS tube in the second MOS power module.

4. The pulse controlled electro-optic Q-drive power supply of claim 2, wherein, The first isolated optocoupler driving module comprises an isolated optocoupler and a first current limiting resistor, the second isolated optocoupler driving module comprises an isolated optocoupler and a second current limiting resistor, the anode of the light-emitting diode of the isolated optocoupler in the first isolated optocoupler driving module is connected to the first output end of the pulse control module, the cathode of the light-emitting diode of the isolated optocoupler in the first isolated optocoupler driving module is connected to the second output end of the pulse control module through the first current limiting resistor, the anode of the light-emitting diode of the isolated optocoupler in the second isolated optocoupler driving module is connected to the second output end of the pulse control module, the cathode of the light-emitting diode of the isolated optocoupler in the second isolated optocoupler driving module is connected to the first output end of the pulse control module through the second current limiting resistor, the first output end of the pulse control module is used for outputting the first pulse signal, and the second output end of the pulse control module is used for outputting the second pulse signal; the output end of the isolated optocoupler in the first isolated optocoupler driving module is connected to the control end of the first MOS power module, and the output end of the isolated optocoupler in the second isolated optocoupler driving module is connected to the control end of the second MOS power module.

5. The pulse controlled electro-optic Q-drive power supply of claim 1, wherein, The isolation optocoupler driving module comprises isolation optocouplers U1, U2, U3, U4, resistors R5 and R6; the isolation power supply comprises first, second, third and fourth power supplies; the first MOS power module comprises MOS transistors Q1 and Q2; and the second MOS power module comprises MOS transistors Q3 and Q4.

6. The pulse controlled electro-optic Q-drive power supply of claim 5, wherein, The anode of the light-emitting diode of the isolation optocoupler U1 and the anode of the light-emitting diode of the isolation optocoupler U2 are connected to the first output end of the pulse control module; the cathode of the light-emitting diode of the isolation optocoupler U1 and the cathode of the light-emitting diode of the isolation optocoupler U2 are connected to the second output end of the pulse control module through the resistor R5; the anode of the light-emitting diode of the isolation optocoupler U3 and the anode of the light-emitting diode of the isolation optocoupler U4 are connected to the second output end of the pulse control module; and the cathode of the light-emitting diode of the isolation optocoupler U3 and the cathode of the light-emitting diode of the isolation optocoupler U4 are connected to the first output end of the pulse control module through the resistor R6, wherein the first output end of the pulse control module is used for outputting a first pulse signal, and the second output end of the pulse control module is used for outputting a second pulse signal; the power supply ends of the isolation optocouplers U1, U2, U3 and U4 are connected to the first, second, third and fourth power supplies, respectively; the output end of the isolation optocoupler U1 is connected to the gate of the MOS transistor Q1, the source of the MOS transistor Q1 is connected to a high-voltage direct-current power supply, and the drain of the MOS transistor Q1 is connected to the ground of the first power supply; the output end of the isolation optocoupler U2 is connected to the gate of the MOS transistor Q2, the source of the MOS transistor Q2 is connected to the drain of the MOS transistor Q1, and the drain of the MOS transistor Q2 is connected to the ground of the second power supply and the high-voltage output end of the pulse control light Q driving power supply; the output end of the isolation optocoupler U3 is connected to the gate of the MOS transistor Q3, the source of the MOS transistor Q3 is connected to the high-voltage output end of the pulse control light Q driving power supply, and the drain of the MOS transistor Q3 is connected to the ground of the third power supply; the output end of the isolation optocoupler U4 is connected to the gate of the MOS transistor Q4, the source of the MOS transistor Q4 is connected to the drain of the MOS transistor Q3, and the drain of the MOS transistor Q4 is connected to the ground of the fourth power supply.

7. The pulse controlled electro-optic Q-drive power supply of claim 6, wherein, The resistor R1 is connected between the output end of the isolation optocoupler U1 and the ground of the first power supply; the resistor R2 is connected between the output end of the isolation optocoupler U2 and the ground of the second power supply; the resistor R3 is connected between the output end of the isolation optocoupler U3 and the ground of the third power supply; and the resistor R4 is connected between the output end of the isolation optocoupler U4 and the ground of the fourth power supply. The high-voltage capacitor C1 is connected between the source of the MOS transistor Q4 and the ground of the high-voltage direct-current power supply.

8. The pulse controlled electro-optic Q-drive power supply of claim 7, wherein, The output end of the isolation optical coupler U1 is connected with the gate of the MOS tube Q1 through a current-limiting resistor; the output end of the isolation optical coupler U2 is connected with the gate of the MOS tube Q2 through a current-limiting resistor; the output end of the isolation optical coupler U3 is connected with the gate of the MOS tube Q3 through a current-limiting resistor; and the output end of the isolation optical coupler U4 is connected with the gate of the MOS tube Q4 through a current-limiting resistor.

9. The pulse controlled electro-optic Q-drive power supply of any of claims 1-8, wherein, The electro-optical Q converter adopts a BBO crystal, a KDP crystal, a KTP crystal or an RTP crystal.

10. The pulse controlled electro-optic Q-drive power supply of any of claims 1-8, wherein, The first pulse signal and the second pulse signal are provided with a dead time in a unit cycle, and the first pulse signal and the second pulse signal are high or low in the dead time.

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