A radio frequency laser power supply

Abstract

The application provides a radio frequency laser power supply, which comprises a pulse input interface, an input pulse width acquisition circuit, a microprocessor, a signal control and radio frequency signal modulation circuit, a temperature acquisition circuit, a voltage acquisition circuit, an amplifier I, an amplifier II, an amplifier III, a variable capacitor, a radio frequency output port, a bidirectional operation port, a carrier signal generator, a DC / DC II, a DC / DC I, a direct current power supply input interface and a Hall current sensor; the signal control and radio frequency circuit comprises a radio frequency modulation gate circuit, an external input pulse and a zero adjustment pulse and simulation pulse synthesis gate circuit, a control input pulse gate circuit and a control carrier gate circuit. The radio frequency laser power supply can realize accurate control of output light power, automatic zero adjustment of output laser and laser power corresponding to the input pulse width duty cycle.

Description

Technical Field

[0001] This invention relates to the field of radio frequency laser technology, specifically to a radio frequency laser power supply. Background Technology

[0002] Lasers are widely used in real-world production and daily life, and the performance of lasers has attracted much attention. Radio frequency (RF) lasers, in particular, have seen significant development due to their advantages such as small size, long lifespan, and low maintenance costs. RF lasers require an RF excitation power supply to provide energy. However, the accuracy of existing RF laser power supplies in controlling output optical power is not high and needs improvement. Summary of the Invention

[0003] The purpose of this invention is to provide a radio frequency laser power supply that can accurately control the output optical power and automatically zero the output laser, thus providing a radio frequency laser power supply that achieves laser power corresponding to the input pulse width duty cycle.

[0004] To achieve the above objectives, the present invention proposes the following technical solution: a radio frequency laser power supply, comprising a pulse input interface, an input pulse width acquisition circuit, a microprocessor, a signal control and radio frequency signal modulation circuit, a temperature acquisition circuit, a voltage acquisition circuit, amplifier I, amplifier II, amplifier III, a variable capacitor, a radio frequency output port, a bidirectional operation port, a carrier signal generator, DC / DC II, DC / DC I, a DC power supply input interface, and a Hall current sensor;

[0005] The signal control and radio frequency circuit includes a radio frequency modulation gate circuit, an external input pulse and zero-adjustment pulse and simulated pulse synthesis gate circuit, a control input pulse gate circuit and a control carrier gate circuit.

[0006] Furthermore, in this invention, the microprocessor's A / D conversion port is connected to the input pulse width acquisition circuit, temperature acquisition circuit, voltage acquisition circuit, and the Hall sensor; the microprocessor is connected to DC / DC II; and the microprocessor is connected to the radio frequency modulation gate circuit, the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit, the control input pulse gate circuit, the control carrier gate circuit, and the bidirectional operation port.

[0007] Furthermore, in this invention, one end of the current-carrying end of the Hall sensor is connected to the DC power supply input interface, and the other end of the current-carrying end is connected to the voltage acquisition circuit, the DC / DC I, the amplifier II, and the amplifier III. The signal end of the Hall sensor is connected to the A / D analog-to-digital converter port of the microprocessor.

[0008] Furthermore, in this invention, the DC / DC I input terminal + is connected to the current-carrying output terminal of the Hall sensor, the DC / DC I input terminal is connected to the V- terminal of the DC power supply input interface, and the output terminal of the DC / DC I is connected to the DC / DC II input terminal + and connected to the amplifier II.

[0009] Furthermore, in this invention, the DC / DC II input terminal + is connected to the output terminal of the DC / DC I, the DC / DC II input terminal is connected to the V- terminal of the DC power supply input interface, and the output of the DC / DC II is connected to the microprocessor, the amplifier I, the temperature acquisition circuit, the input pulse width acquisition circuit, and the carrier signal generator.

[0010] Furthermore, in this invention, the DC power supply input interface V+ is connected to one end of the Hall sensor current-carrying terminal. Internally, a three-stage DC power supply is provided. After passing through the Hall sensor, it becomes the first stage of power supply, connected to the amplifier III and the DC / DC I. The output of the DC / DC I is the second stage of power supply, connected to the DC / DC II input terminal + and the amplifier II. The output of the DC / DC II is the third stage of power supply, connected to the microprocessor, the amplifier I, the temperature acquisition circuit, the input pulse width acquisition circuit, and the carrier signal generator.

[0011] Furthermore, in this invention, the pulse input terminal interface is connected to the input pulse width acquisition circuit, the external pulse width modulation signal is connected to the control input pulse gate circuit after photoelectric isolation, the microprocessor control gate circuit, the output terminal of the control input pulse gate circuit is connected to the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit, the microprocessor generates zero-adjustment pulse and simulation pulse and outputs them to the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit respectively, and the output of the synthesis gate circuit is connected to the radio frequency modulation gate circuit.

[0012] Furthermore, in this invention, the carrier signal generator generates a high-frequency sine wave and outputs it to the control carrier gate circuit connected thereto. The control carrier gate circuit is controlled by the microprocessor connected thereto. The control carrier gate circuit is connected to the radio frequency modulation gate circuit, and the controlled high-frequency sine wave is sent to the radio frequency modulation gate circuit.

[0013] Furthermore, in this invention, the radio frequency modulation gate circuit is connected to the control carrier gate circuit, the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit, the radio frequency modulation gate circuit is connected to the amplifier I, and the radio frequency modulation gate circuit modulates the carrier signal from the control carrier gate circuit and the synthesized pulse signal from the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit into the required radio frequency signal and sends it to the amplifier I.

[0014] Amplifier I shapes and amplifies the radio frequency signal modulated by the radio frequency modulation gate circuit, and then sends it to the next stage, namely amplifier II, which is connected to it. Amplifier II is a power driver stage that enhances the driving capability of the radio frequency signal, enabling the pre-amplifier and post-amplifier to operate in coordination. The output of amplifier II is connected to the input of amplifier III, and the output of amplifier III is connected to the variable capacitor and the radio frequency output port. Amplifier III further amplifies the radio frequency wave and sends it to the laser resonant cavity through the radio frequency output port to excite the laser medium material to emit laser light. The variable capacitor is tuned to match amplifier III with the laser resonant cavity.

[0015] A method for intelligent and precise control of laser output power includes using a radio frequency laser power supply as described above, and includes the following steps: Step 1: Set the maximum laser power;

[0016] Power the modulation signal DC power supply input interface, apply a 10KHz pulse signal with a duty cycle of 10% to the pulse width input port, adjust the variable capacitor to make the laser emit light, gradually adjust the applied pulse duty cycle to 100%, and then adjust the variable capacitor to make the laser output light power reach the target power.

[0017] Step 2: Zeroing;

[0018] By closing the external pulse input channel and modifying the pulse width of the optical power zeroing channel, the output laser power is reduced to zero, and the laser is in the critical state of emission.

[0019] Step 3: Acquire external pulse width data;

[0020] An external pulse signal is applied, and the duty cycle is collected and transcribed one by one from 1% to 100% to form an output optical power scale table;

[0021] Step 4: Collect and generate optical power related data tables;

[0022] The duty cycle of the input pulse signal from the external channel is adjusted to change the laser output power from 1% to 100% according to a preset scale value (a percentage of the total power). Simultaneously, corresponding voltage and current data are collected to calculate the input reference power (total electrical power), forming a table corresponding to optical power and total electrical power. Under certain conditions, a correspondence exists between laser output power and input electrical power.

[0023] Step 5: Simulate and output the corresponding optical power;

[0024] The external pulse input channel is closed, and the simulation channel outputs a signal pulse. The A / D converter collects the external input pulse width, voltage, and current data in real time, calculates the total power in real time, and compares the real-time total power with the reference power. If the deviation is within a certain range, it is considered to be in agreement. If it exceeds the set range, the simulation pulse width is gradually adjusted. If the real-time total power is too large, the simulation signal width is reduced; otherwise, the simulation pulse width is increased, until the power matches the reference power, and the dynamic agreement is maintained.

[0025] Beneficial effects: The technical solution of this application has the following technical effects:

[0026] The radio frequency laser power supply of the present invention can accurately control the output optical power, can automatically zero the output laser, and achieve laser power corresponding to the input pulse width duty cycle.

[0027] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered part of the inventive subject matter of this disclosure, provided that such concepts do not contradict each other.

[0028] The foregoing and other aspects, embodiments, and features of the teachings of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0029] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0030] Figure 1 This is a structural block diagram of the present invention.

[0031] The meanings of the labels in the figures are as follows: 1-Pulse input interface, 2-Input pulse width acquisition circuit, 3-Microprocessor, 4-Signal control and RF signal modulation circuit, 4001-RF modulation gate circuit, 4002-External input pulse and zero-adjustment pulse and simulated pulse synthesis gate circuit, 4003-Control input pulse gate circuit, 4004-Control carrier gate circuit, 5-Temperature acquisition circuit, 6-Voltage acquisition circuit, 7-Amplifier I, 8-Amplifier II, 9-Amplifier III, 10-Variable capacitor, 11-RF output port, 12-Bidirectional operation port, 13-Carrier signal generator, 14-DC / DC II, 15-DC / DC I, 16-DC power supply input interface, 17-Hall current sensor. Detailed Implementation

[0032] To better understand the technical content of this invention, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of the invention are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this invention are not limited to any particular implementation. Furthermore, some aspects of this invention can be used alone or in any suitable combination with other aspects of this invention.

[0033] like Figure 1 As shown, a radio frequency laser power supply includes a pulse input interface 1, an input pulse width acquisition circuit 2, a microprocessor 3, a signal control and radio frequency signal modulation circuit 4, a temperature acquisition circuit 5, a voltage acquisition circuit 6, an amplifier I 7, an amplifier II 8, an amplifier III 9, a variable capacitor 10, a radio frequency output port 11, a bidirectional operation port 12, a carrier signal generator 13, a DC / DC II 14, a DC / DC I 15, a DC power supply input interface 16, and a Hall current sensor 17.

[0034] The signal control and radio frequency circuit 4 includes a radio frequency modulation gate circuit 4001, an external input pulse and zero-adjustment pulse and simulated pulse synthesis gate circuit 4002, a control input pulse gate circuit 4003, and a control carrier gate circuit 4004.

[0035] The A / D conversion port of the microprocessor 3 is connected to the input pulse width acquisition circuit 2, the temperature acquisition circuit 5, the voltage acquisition circuit 6, and the Hall sensor 17. The microprocessor 3 is connected to the DC / DC II 14. The microprocessor 3 is also connected to the radio frequency modulation gate circuit 4001, the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit 4002, the control input pulse gate circuit 4003, the control carrier gate circuit 4004, and the bidirectional operation port 12.

[0036] One end of the current-carrying terminal of the Hall sensor 17 is connected to the DC power supply input interface 16, and the other end is connected to the voltage acquisition circuit 6, the DC / DC converter I 15, the amplifier II 8, and the amplifier III 9. The signal terminal of the Hall sensor 17 is connected to the A / D converter port of the microprocessor 3.

[0037] The input terminal of DC / DCⅠ15 is connected to the current output terminal of the Hall sensor 17, the input terminal of DC / DCⅠ15 is connected to the V- terminal of the DC power supply input interface 16, and the output terminal of DC / DCⅠ15 is connected to the input terminal of DC / DCⅡ14 and to the amplifier Ⅱ8.

[0038] The input terminal of DC / DCⅡ14 is connected to the output terminal of DC / DCⅠ15, the input terminal of DC / DCⅡ14 is connected to the V- terminal of the DC power supply input interface, and the output of DC / DCⅡ14 is connected to the microprocessor 3, the amplifier Ⅰ7, the temperature acquisition circuit 5, the input pulse width acquisition circuit 2, and the carrier signal generator 13.

[0039] The 16V+ terminal of the DC power supply input interface is connected to one end of the current-carrying terminal of the Hall sensor 17. The internal DC three-stage power supply is as follows: after passing through the Hall sensor 17, it becomes the first stage of power supply, which is connected to the amplifier Ⅲ9 and the DC / DC Ⅰ15. The output of the DC / DC Ⅰ15 is the second stage of power supply, which is connected to the input terminal+ of the DC / DC Ⅱ14 and the amplifier Ⅱ8. The output of the DC / DC Ⅱ14 is the third stage of power supply, which is connected to the microprocessor 3, the amplifier Ⅰ7, the temperature acquisition circuit 5, the input pulse width acquisition circuit 2, and the carrier signal generator 13.

[0040] The pulse input terminal interface 1 is connected to the input pulse width acquisition circuit 2. The external pulse width modulation signal is connected to the control input pulse gate circuit 4003 after photoelectric isolation. The microprocessor 3 controls the gate circuit 4003. The output terminal of the control input pulse gate circuit 4003 is connected to the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit 4002. The microprocessor 3 generates a zero-adjustment pulse and a simulation pulse, which are output to the external input pulse and zero-adjustment pulse and simulation pulse synthesis gate circuit 4002 respectively. The output of the synthesis gate circuit 4002 is connected to the radio frequency modulation gate circuit 4001.

[0041] The carrier signal generator 13 generates a high-frequency sine wave and outputs it to the control carrier gate circuit 4004 connected thereto. The control carrier gate circuit 4004 is controlled by the microprocessor 3 connected thereto. The control carrier gate circuit 4004 is connected to the radio frequency modulation gate circuit 4001. The controlled high-frequency sine wave is sent to the radio frequency modulation gate circuit 4001.

[0042] The RF modulation gate circuit 4001 is connected to the control carrier gate circuit 4004 and the external input pulse, zero-adjustment pulse, and simulated pulse synthesis gate circuit 4002. The RF modulation gate circuit 4001 is connected to the amplifier I7. The RF modulation gate circuit 4001 modulates the carrier signal from the control carrier gate circuit 4004 and the synthesized pulse signal from the external input pulse, zero-adjustment pulse, and simulated pulse synthesis gate circuit 4002 into the required RF signal and sends it to the amplifier I7.

[0043] Amplifier I7 shapes and amplifies the radio frequency signal modulated by the radio frequency modulation gate circuit 4001, and then sends it to the next stage, namely amplifier II8, which is connected to it. Amplifier II8 is a power driver stage that enhances the driving capability of the radio frequency signal and enables the pre-amplifier and post-amplifier to operate in coordination. The output of amplifier II8 is connected to the input of amplifier III9. The output of amplifier III9 is ​​connected to the variable capacitor 10 and the radio frequency output port 11. Amplifier III9 further amplifies the radio frequency wave and sends it to the laser resonant cavity through the radio frequency output port 11 to excite the laser medium material to emit laser light. The variable capacitor 10 is tuned to match amplifier III9 with the laser resonant cavity.

[0044] The temperature data collected in this invention is used to monitor and judge the laser's operating status and make timely protective controls. The voltage data collected in this invention is used to calculate the total electrical power and judge the power supply status, and make necessary protective controls when the predetermined limit is exceeded. The current data collected in this invention is used to calculate the total electrical power, and the total electrical power is converted into a reference for the output optical power to adjust the simulated pulse width. The external pulse width sampling data in this invention is used for the laser output target power. The bidirectional control port 12 is used for internal and external indication and interactive control.

[0045] This invention features three pulse signals: an external pulse width modulation signal, a power zeroing pulse signal, and a simulated output pulse signal. Combined with corresponding hardware and algorithms, it enables precise output of laser power from the laser.

[0046] A method for intelligently and precisely controlling laser output power includes using a radio frequency laser power supply as described above, comprising the following steps: setting the maximum laser power, supplying power to the DC power supply input interface 10, applying a pulse signal with a duty cycle of 10% and a frequency of 5kHz to 20kHz to the pulse width input port 1, adjusting the variable capacitor 10 to make the laser emit light, gradually adjusting the applied pulse duty cycle to 100%, and then adjusting the variable capacitor 10 to make the laser output light power reach the target power.

[0047] Zeroing is achieved by closing the external pulse input channel, i.e., controlling the input pulse gate circuit 4003, and modifying the pulse width of the optical power zeroing channel to make the laser output power zero, thus placing the laser in a critical emission state.

[0048] External pulse width data is acquired by applying a pulse signal outside the pulse width input port 1, with duty cycles ranging from 1% to 100%, and the data is transcribed into an output optical power grading table.

[0049] A data table related to optical power is generated. The duty cycle of the pulse signal input to port 1 of the external channel is adjusted so that the laser output optical power varies from 1% to 100% according to a preset target power division value (a percentage of total power). Simultaneously, corresponding voltage and current data are collected to calculate the input reference power (total electrical power), forming a table corresponding to optical power and total electrical power. Under certain conditions, a correspondence exists between laser output power and input electrical power.

[0050] The simulated output corresponds to the optical power. When the external pulse input channel is closed, the control input pulse gate circuit 4003 is closed. The simulated signal pulse output by the microprocessor 3 is sent to the radio frequency modulation gate circuit 4001 to modulate the carrier signal into the required radio frequency signal and send it to amplifier I7 for shaping and amplification. Then it is sent to the next stage, amplifier II8, to enhance the radio frequency signal driving capability. After that, it is output to amplifier III9 to further amplify the radio frequency wave. It is then sent to the laser resonant cavity through the radio frequency output port 11 to excite the laser medium material to emit laser light. The variable capacitor 10 is tuned to match amplifier III9 with the laser resonant cavity. Microprocessor 3, via the A / D converter input port, acquires external input pulse width, voltage, and current data in real time, calculates the total power in real time, and compares the real-time total power with the reference power. If the deviation is within a certain range, it is considered a match, and no adjustment of the simulated pulse width is needed. If the deviation exceeds the set range, the simulated pulse width is changed. If the real-time total power is too high, the simulated signal width is decreased; otherwise, the simulated pulse width is increased. While changing the simulated pulse width, data acquisition, calculation, and judgment are continuously repeated until the real-time total power matches the reference power. At this point, the simulated pulse width is no longer changed, and a dynamic matching state is maintained. This achieves the goal of precisely controlling the laser output power.

[0051] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A radio frequency laser power supply characterized by: The pulse input interface, the input pulse width acquisition circuit, the microprocessor, the signal control and radio frequency signal modulation circuit, the temperature acquisition circuit, the voltage acquisition circuit, amplifier I, amplifier II, amplifier III, variable capacitor, radio frequency output port, bidirectional operation port, carrier signal generator, DC / DC II, DC / DC I, direct current power supply input interface and Hall current sensor are included. The signal control and radio frequency circuit includes a radio frequency modulation gate circuit, an external input pulse and a zero adjustment pulse and simulation pulse synthesis gate circuit, a control input pulse gate circuit and a control carrier gate circuit. The zero adjustment pulse and simulation pulse process is as follows: Zero adjustment, the external pulse input channel is closed, that is, the control input pulse gate circuit is closed, the pulse width of the optical power zero adjustment channel is modified, the laser output laser power is zero, and the laser is in a critical state of light emission; The external pulse width data is collected, the pulse signal is applied to the pulse width input port 1, the duty cycle is collected from 1% to 100% one by one and transcribed into an output optical power scale table; The optical power related data table is collected, the duty cycle of the pulse signal input to the external channel pulse width input port 1 is adjusted, the laser output optical power changes from 1% to 100% according to the preset target power scale value, and the corresponding voltage value data and current value data are collected at the same time, the input reference power, that is, the total electric power, is calculated, and the optical power and total electric power corresponding table is formed.

2. A radio frequency laser power supply as claimed in claim 1, characterized in that: The A / D conversion port of the microprocessor is connected with the input pulse width acquisition circuit, the temperature acquisition circuit, the voltage acquisition circuit, the Hall sensor, the microprocessor is connected with DC / DC II, the microprocessor is connected with the radio frequency modulation gate circuit, the external input pulse and the zero adjustment pulse and simulation pulse synthesis gate circuit, the control input pulse gate circuit, the control carrier gate circuit and the bidirectional operation port.

3. A radio frequency laser power supply as claimed in claim 1, characterized in that: One end of the through-flow end of the Hall sensor is connected with the direct current power supply input interface, the other end of the through-flow end is connected with the voltage acquisition circuit, DC / DC I, amplifier II and amplifier III, and the signal end of the Hall sensor is connected with the A / D analog conversion port of the microprocessor.

4. A radio frequency laser power supply as claimed in claim 1, characterized in that: The input end + of DC / DC I is connected with the through-flow output end of the Hall sensor, the input end of DC / DC I is connected with the V- end of the direct current power supply input interface, and the output end of DC / DC I is connected with the input end + of DC / DC II and the amplifier II.

5. A radio frequency laser power supply as claimed in claim 1, characterized in that: The input end + of DC / DC II is connected with the output end of DC / DC I, the input end of DC / DC II is connected with the V- end of the direct current power supply input interface, and the output of DC / DC II is connected with the microprocessor, the amplifier I, the temperature acquisition circuit, the input pulse width acquisition circuit and the carrier signal generator.

6. A radio frequency laser power supply as claimed in claim 1, characterized in that: The direct current power supply input interface V+ end is connected with one end of the Hall sensor through-flow end, internal direct current three-level power supply, and after the Hall sensor, it is power supply first level, and is connected with the amplifier III, the DC / DC I, the DC / DC I output is power supply second level, and is connected with the DC / DC II input end +, the amplifier II, the DC / DC II output is power supply third level, and is connected with the microprocessor, the amplifier I, the temperature acquisition circuit, the input pulse width acquisition circuit, the carrier signal generator.

7. A radio frequency laser power supply as claimed in claim 1, characterized in that: The pulse input end interface is connected with the input pulse width acquisition circuit, and the external pulse width modulation signal is connected to the control input pulse gate circuit after photoelectric isolation, the microprocessor controls the gate circuit, the control input pulse gate circuit output end, the external input pulse and the zero adjusting pulse and the simulation pulse synthesis gate circuit are connected, the microprocessor generates the zero adjusting pulse and the simulation pulse and outputs to the external input pulse and the zero adjusting pulse and the simulation pulse synthesis gate circuit, and the synthesis gate circuit output is connected with the radio frequency modulation gate circuit.

8. A radio frequency laser power supply as claimed in claim 1, characterized in that: The carrier signal generator generates high-frequency sine wave and outputs to the control carrier gate circuit connected therewith, the control carrier gate circuit is controlled by the microprocessor connected therewith, the control carrier gate circuit is connected with the radio frequency modulation gate circuit, and the controlled high-frequency sine wave is sent to the radio frequency modulation gate circuit.

9. A radio frequency laser power supply as claimed in claim 1, characterized in that: The radio frequency modulation gate circuit is connected with the control carrier gate circuit, the external input pulse and the zero adjusting pulse and the simulation pulse synthesis gate circuit, the radio frequency modulation gate circuit is connected with the amplifier I, the radio frequency modulation gate circuit modulates the carrier signal from the control carrier gate circuit and the synthesized pulse signal from the external input pulse and the zero adjusting pulse and the simulation pulse synthesis gate circuit into the required radio frequency signal and delivers to the amplifier I; The amplifier I shapes and amplifies the radio frequency signal modulated by the radio frequency modulation gate circuit and then sends to the next stage, i.e. the amplifier II connected therewith, the amplifier II is a power pushing stage, which improves the driving ability of the radio frequency signal and makes the front-stage and rear-stage amplifiers run coordinately, the amplifier II output is connected with the amplifier III input, the amplifier III output is connected with the variable capacitor and the radio frequency output port, the amplifier III further amplifies the radio frequency wave and delivers to the laser resonant cavity through the radio frequency output port to excite the laser medium and emit laser, and the variable capacitor is adjusted to match the amplifier III with the laser resonant cavity.

10. A method for intelligently controlling the output power of a laser with precision, comprising using a radio frequency laser power supply as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: step one, setting the maximum laser power; The modulation signal direct current power supply input interface is powered, the pulse width input port applies a 10KHz pulse signal with a duty cycle of 10%, the variable capacitor is adjusted to make the laser emit light, the applied pulse duty cycle is gradually adjusted to 100%, and then the variable capacitor is adjusted to make the laser output optical power reach the target power; Step two, zero adjustment; The external pulse input channel is closed, the pulse width of the optical power zero adjustment channel is modified, the output laser power is zero, and the laser is in a critical state of emitting light; Step three, collecting external pulse width data; Step four, laser power output test; From the outside to apply pulse signal, duty cycle from 1% to 100% one by one collection transcription into the output power scale; Step four: collection generated light power related data table; Adjust the duty cycle of external channel input pulse signal, so that the laser output power changes from 1% to 100% according to the pre-set scale value (total power percentage), while collecting the corresponding voltage value data, current value data, calculating the input reference power (total electric power), forming the light power and total electric power corresponding table, under certain conditions, there is a corresponding relationship between the laser output power and the input electric power; Step five: simulation output corresponding light power; Close the external pulse input channel, simulate the channel output signal pulse, A / D analog-to-digital converter real-time collection of external input pulse width, voltage, current data, real-time calculation of total electric power, compare the real-time total electric power with the reference power, the deviation is within a certain range, it is considered to be consistent, beyond the set range, by gradually changing the simulation pulse width adjustment, real-time total electric power is large, then reduce the simulation signal width, otherwise increase the simulation pulse width, until the power and the reference power are consistent, and always keep the dynamic consistent state.

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