Integrated system and method for mid-infrared laser pump control and time-frequency domain information acquisition

Abstract

A mid-infrared laser pump control and time-frequency domain information acquisition integrated system and method, system: the controller is respectively connected with the laser on button, the laser off button, the temperature adjustment module, the power adjustment module, the frequency adjustment module, the pulse width adjustment module, the working mode adjustment module, the laser communication interface, the oscilloscope communication interface, the spectrometer communication interface, the spectrum real-time display module, the time domain real-time display module, the frequency domain and time domain storage module; the method: the controller controls the laser to work according to the set working module, temperature, power, frequency, and pulse width, and at the same time, receives the signals of the oscilloscope and the spectrometer, and displays the generated time domain diagram and spectrum diagram in real time. The system and method meet the needs for real-time, multi-dimensional signal acquisition and processing.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser control, and in particular relates to a mid-infrared laser pump control and time-frequency domain information acquisition integrated system and method. Background Art

[0002] As an efficient and precise light source, lasers have been widely used in industrial processing, communications, medical treatment, scientific research and other fields. In order to achieve stable output of high-performance lasers, it is usually necessary to accurately control the pump power of the laser and monitor the time domain and frequency domain characteristics of its output optical signal in real time. However, most laser systems currently still have the problem of separate design in terms of pump control and information collection, which leads to increased system complexity, higher costs and reduced real-time performance.

[0003] On the other hand, the characteristic analysis of the laser output optical signal usually uses independent time domain or frequency domain analysis instruments, such as high-speed oscilloscopes or spectrometers. This separate design not only increases the hardware complexity and usage cost, but also fails to meet the needs of real-time, multi-dimensional signal acquisition and processing. In practical applications, there is an important correlation between frequency domain information (such as central wavelength, bandwidth) and time domain information (such as pulse width, repetition frequency), and their synchronous acquisition and analysis are of great significance for optimizing the performance of laser systems.

[0004] In recent years, with the rapid development of intelligent and integrated technologies, solutions based on embedded controllers and high-speed data acquisition technologies have gradually become a research hotspot. These solutions attempt to integrate pump control, optical signal analysis and system optimization on a single platform, but existing technical solutions still have deficiencies in real-time performance, integration and applicability. In particular, a mature technical system has not yet been formed in terms of dynamic multi-parameter collaborative optimization and stable operation in complex environments.

[0005] In order to solve the above problems, the present invention provides an integrated system and method for mid-infrared ultrafast laser pump control and time-frequency domain information acquisition. Summary of the invention

[0006] In view of the problems existing in the above-mentioned prior art, the present invention provides an integrated system and method for mid-infrared laser pump control and time-frequency domain information acquisition. The system has a high degree of integration and has the characteristics of strong practicality, easy operation, good compatibility, etc. It is easy to promote and can meet the needs for real-time, multi-dimensional signal acquisition and processing. The method has a simple operation process, strong practicality, and high control accuracy. It can realize real-time correction and stable control of wavelength. At the same time, it can effectively reduce the mismatch of time domain and frequency domain data, and can be widely used in most laser systems.

[0007] In order to achieve the above-mentioned purpose, the present invention provides an integrated system for mid-infrared laser pump control and time-frequency domain information acquisition, including a laser on button, a laser off button, a temperature adjustment module, a power adjustment module, a frequency adjustment module, a pulse width adjustment module, a working mode adjustment module, a laser communication interface, an oscilloscope communication interface, a spectrometer communication interface, a spectrum real-time display module, a time domain real-time display module, a frequency domain and time domain storage module, and a controller;

[0008] The controller is respectively connected to a laser on button, a laser off button, a temperature adjustment module, a power adjustment module, a frequency adjustment module, a pulse width adjustment module, a working mode adjustment module, a laser communication interface, an oscilloscope communication interface, a spectrometer communication interface, a spectrum real-time display module, a time domain real-time display module, and a frequency domain and time domain storage module;

[0009] The laser on button is used to send a laser on signal to the controller after being pressed;

[0010] The laser off button is used to send a laser on signal to the controller after being pressed;

[0011] The temperature adjustment module is used to input the received external input temperature data into the controller;

[0012] The power regulation module is used to input the received external input power data into the controller;

[0013] The frequency adjustment module is used to input the received external input frequency data into the controller;

[0014] The pulse width modulation module is used to input the received external input pulse width data into the controller;

[0015] The working module adjustment module is used to input the externally selected continuous light working mode signal or pulse light working mode signal into the controller;

[0016] The laser communication interface is used to establish a communication link between the laser and the controller, and is also used to automatically identify the model of the laser according to the different models of the connected laser, and automatically select a corresponding communication protocol;

[0017] The oscilloscope communication interface is used to establish a communication link between the oscilloscope and the controller, and is also used to automatically identify the model of the oscilloscope according to the different models of the connected oscilloscope and automatically select a corresponding communication protocol;

[0018] The spectrometer communication interface is used to establish a communication link between the spectrometer and the controller, and is also used to automatically identify the model of the spectrometer according to the different models of the connected spectrometer and automatically select a corresponding communication protocol;

[0019] The spectrum real-time display module is used to display the spectrum graph in real time;

[0020] The time domain real-time display module is used to display the time domain graph in real time;

[0021] The frequency domain and time domain storage modules are used to store frequency domain data and time domain data;

[0022] The controller is used to control the laser to turn on through the laser communication interface after receiving a laser turn-on signal, to control the laser to turn off through the laser communication interface after receiving a laser turn-off signal, to control the operating temperature of the laser through the laser communication interface after receiving external input temperature data, to control the operating power of the laser through the laser communication interface after receiving external input power data, to control the frequency of the laser emitted by the laser through the laser communication interface after receiving external input frequency data, to control the pulse width of the laser emitted by the laser through the laser communication interface after receiving external input pulse width data, to control the laser to operate in a continuous light operating mode and a pulse light operating mode through the laser communication interface after receiving a continuous light operating mode signal or a pulse light operating mode signal, to receive frequency domain information emitted by a spectrometer, to generate a spectrum diagram based on the received frequency domain information, and then to send the spectrum diagram to a spectrum real-time display module, to receive time domain information emitted by an oscilloscope, to generate a time domain diagram based on the received time domain information, and then to send the time domain diagram to the time domain real-time display module.

[0023] As a preference, the laser communication interface supports UART, USB, Ethernet, and RS-232 serial communication protocols.

[0024] As a preference, the oscilloscope communication interface supports UART, USB, Ethernet, and RS-232 serial communication protocols.

[0025] Preferably, the spectrometer communication interface supports UART, USB, Ethernet, and RS-232 serial communication protocols.

[0026] As a preference, the controller is a python platform built on an ESP32 development board.

[0027] As a preference, it further comprises a power module, and the power module is used for supplying electricity.

[0028] The present invention can automatically control the opening and closing operations of the laser, and at the same time, can conveniently set the temperature, power, frequency, pulse and working mode of the laser, wherein the working mode includes two types of continuous light or pulsed light, and can view the set temperature, power and other parameters in real time. By setting the spectrum real-time display module and the time domain real-time display module, it is convenient to synchronously display the frequency domain and time domain information of the current laser in real time, which is conducive to synchronously acquiring and analyzing the time domain information and the frequency domain information. By setting the frequency domain and time domain storage modules, the time domain information and the frequency domain information can be quickly and conveniently stored. The system has a high degree of integration and has the characteristics of strong practicality, easy operation, good compatibility, etc. It is easy to promote and can meet the needs of real-time, multi-dimensional signal acquisition and processing.

[0029] The present invention provides a mid-infrared laser pump control and time-frequency domain information acquisition method, which adopts a mid-infrared laser pump control and time-frequency domain information acquisition integrated system, including the following steps:

[0030] Step 1: Use the laser communication interface to establish a link connection between the laser and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition. The laser communication interface automatically identifies the model of the laser and selects the corresponding communication protocol;

[0031] The oscilloscope communication interface is used to establish a link connection between the oscilloscope and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition. The oscilloscope communication interface automatically identifies the model of the oscilloscope and selects the corresponding communication protocol;

[0032] A link connection is established between the spectrometer and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition using the spectrometer communication interface, which automatically identifies the model of the spectrometer and selects the corresponding communication protocol;

[0033] Step 2: When starting the experiment, press the laser on button to send a laser on signal to the controller. After receiving the laser on signal, the controller controls the laser to turn on through the laser communication interface, and the laser starts working;

[0034] The continuous light working mode or the pulse light working mode is selected by the working module adjustment module, and a continuous light working mode signal or a pulse light working mode signal is sent to the controller, and the controller controls the laser to work in the continuous light working mode or the pulse light working mode through the laser communication interface after receiving the continuous light working mode signal or the pulse light working mode signal;

[0035] The required temperature data is input through the temperature adjustment module, the required power data is input through the power adjustment module, the required frequency data is input through the frequency adjustment module, and the required pulse width data is input through the pulse width adjustment module. The controller controls the operating temperature, operating power, frequency of laser emission, and pulse width of the laser through the laser communication interface according to the received temperature data, power data, frequency data, and pulse width data. In this process, the controller controls the laser through the PID control algorithm, wherein the controller output signal u(t) is obtained according to formula (1);

[0036]

[0037] In the formula, e(t) represents the deviation, that is, the difference between the target value and the actual value; K p Represents the proportional gain, which is used to respond to deviation; K i Represents the integral gain, which is used to eliminate steady-state error; K d Represents the differential gain, which is used to improve the dynamic response speed;

[0038] Step 3: Collect the pulse signal of the laser through the oscilloscope, and send the pulse signal to the controller through the oscilloscope communication interface. The controller analyzes and processes the pulse signal to obtain the time domain characteristics, and generates a time domain diagram according to the time domain characteristics, and then displays it in real time through the time domain real-time display module. At the same time, the time domain information is sent to the frequency domain and time domain storage module for storage; wherein, in the process of analyzing and processing the pulse signal, the controller obtains the pulse repetition frequency according to formula (2);

[0039]

[0040] Where, T rep is the pulse repetition period;

[0041] The frequency domain signal of the laser is detected by the spectrometer, and the frequency domain signal is sent to the controller through the spectrometer communication interface. The controller analyzes and processes the frequency domain signal to obtain the frequency domain characteristics, and generates a frequency domain graph based on the frequency domain characteristics. The frequency domain real-time display module displays the image in real time. At the same time, the frequency domain information is sent to the frequency domain and time domain storage module for storage. In this process, the controller analyzes the wavelength drift according to the frequency domain signal, and obtains the wavelength deviation Δλ according to formula (3). The wavelength deviation Δλ is then input into the PID control algorithm for adjustment to obtain a new controller output signal u(t) 0 , in order to achieve real-time correction and stable control of wavelength;

[0042] Δλ=λ measured -λ target (3);

[0043] In the formula, λ measuredIndicates the central wavelength measured in real time. target Indicates the target wavelength;

[0044] When the spectrometer and the oscilloscope collect data simultaneously, the controller measures the accuracy of clock synchronization according to formula (4); and realizes synchronous sampling of the spectrometer and the oscilloscope according to formula (5);

[0045] Δt=t osc -t spec (4);

[0046] R osc =N·R spec (5);

[0047] Where Δt represents the sampling time deviation between the spectrometer and the oscilloscope; t osc Indicates the sampling time of the oscilloscope; t spec represents the sampling time of the spectrometer; R osc Indicates the oscilloscope sampling rate; R spec Indicates the sampling rate of the spectrometer; N indicates the multiple relationship between the sampling rates of the spectrometer and the oscilloscope;

[0048] Step 4: When the experiment is finished, press the laser off button to send a laser off signal to the controller. After receiving the laser off signal, the controller controls the laser to turn off through the laser communication interface to stop the laser from working. After the laser stops working, the pump power automatically drops to zero.

[0049] The present invention has strong compatibility and is compatible with a variety of pump sources, spectrometers, oscilloscopes and other equipment from different companies. At the same time, it can easily obtain time domain information and frequency domain information, and can synchronously display the obtained time domain information and frequency domain information in real time, which helps to achieve synchronous analysis of time domain information and frequency domain information. In addition, the present invention adopts a PID control algorithm in the process of controlling the laser, and modifies the output signal in combination with the wavelength offset, thereby achieving real-time correction and stable control of the wavelength. Furthermore, when the spectrometer and oscilloscope collect data at the same time, the mismatch of time domain and frequency domain data can be effectively reduced according to the synchronous sampling method.

[0050] This method has a simple operation process, strong practicality and high control accuracy. It can realize real-time correction and stable control of wavelength. At the same time, it can effectively reduce the mismatch of time domain and frequency domain data and can be widely used in most laser systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a principle block diagram of the present invention. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] like Figure 1 As shown, the present invention provides an integrated system for mid-infrared laser pump control and time-frequency domain information acquisition, including a laser on button, a laser off button, a temperature adjustment module, a power adjustment module, a frequency adjustment module, a pulse width adjustment module, a working mode adjustment module, a laser communication interface, an oscilloscope communication interface, a spectrometer communication interface, a spectrum real-time display module, a time domain real-time display module, a frequency domain and time domain storage module, and a controller;

[0054] The controller is respectively connected to a laser on button, a laser off button, a temperature adjustment module, a power adjustment module, a frequency adjustment module, a pulse width adjustment module, a working mode adjustment module, a laser communication interface, an oscilloscope communication interface, a spectrometer communication interface, a spectrum real-time display module, a time domain real-time display module, and a frequency domain and time domain storage module;

[0055] The laser on button is used to send a laser on signal to the controller after being pressed;

[0056] The laser off button is used to send a laser on signal to the controller after being pressed;

[0057] The temperature adjustment module is used to input the received external input temperature data into the controller;

[0058] The power regulation module is used to input the received external input power data into the controller;

[0059] The frequency adjustment module is used to input the received external input frequency data into the controller;

[0060] The pulse width modulation module is used to input the received external input pulse width data into the controller;

[0061] The working module adjustment module is used to input the externally selected continuous light working mode signal or pulse light working mode signal into the controller;

[0062] The laser communication interface is used to establish a communication link between the laser and the controller, and is also used to automatically identify the model of the laser according to the different models of the connected laser, and automatically select a corresponding communication protocol;

[0063] The oscilloscope communication interface is used to establish a communication link between the oscilloscope and the controller, and is also used to automatically identify the model of the oscilloscope according to the different models of the connected oscilloscope and automatically select a corresponding communication protocol;

[0064] The spectrometer communication interface is used to establish a communication link between the spectrometer and the controller, and is also used to automatically identify the model of the spectrometer according to the different models of the connected spectrometer and automatically select a corresponding communication protocol;

[0065] The spectrum real-time display module is used to display the spectrum graph in real time;

[0066] The time domain real-time display module is used to display the time domain graph in real time;

[0067] The frequency domain and time domain storage modules are used to store frequency domain data and time domain data;

[0068] The controller is used to control the laser to turn on through the laser communication interface after receiving a laser turn-on signal, to control the laser to turn off through the laser communication interface after receiving a laser turn-off signal, to control the operating temperature of the laser through the laser communication interface after receiving external input temperature data, to control the operating power of the laser through the laser communication interface after receiving external input power data, to control the frequency of the laser emitted by the laser through the laser communication interface after receiving external input frequency data, to control the pulse width of the laser emitted by the laser through the laser communication interface after receiving external input pulse width data, to control the laser to operate in a continuous light operating mode and a pulse light operating mode through the laser communication interface after receiving a continuous light operating mode signal or a pulse light operating mode signal, to receive frequency domain information emitted by a spectrometer, to generate a spectrum diagram based on the received frequency domain information, and then to send the spectrum diagram to a spectrum real-time display module, to receive time domain information emitted by an oscilloscope, to generate a time domain diagram based on the received time domain information, and then to send the time domain diagram to the time domain real-time display module.

[0069] As a preferred embodiment, the laser communication interface supports including but not limited to UART, USB, Ethernet, RS-232 serial communication protocols, etc., so that the laser communication interface can automatically identify a variety of laser models and can connect autonomously. The identifiable laser models include but are not limited to Keplin, Sorebo and other laser pump source models.

[0070] As a preferred embodiment, the oscilloscope communication interface supports including but not limited to UART, USB, Ethernet, RS-232 serial communication protocols, etc. In this way, the oscilloscope communication interface can automatically identify a variety of oscilloscope models and can connect autonomously, and the oscilloscope models that can be identified include but are not limited to Keysight oscilloscopes, Tektronix oscilloscopes, etc.

[0071] As a preferred embodiment, the spectrometer communication interface supports including but not limited to UART, USB, Ethernet, RS-232 serial communication protocols, etc. In this way, the spectrometer communication interface can automatically identify a variety of spectrometer models and can connect autonomously, and the spectrometer models that can be identified include but are not limited to Yokogawa spectrometers, ocean spectrometers, and other models.

[0072] As a preference, the controller is a python platform built on an ESP32 development board.

[0073] As a preference, it further comprises a power module, and the power module is used for supplying electricity.

[0074] The present invention can automatically control the opening and closing operations of the laser, and at the same time, can conveniently set the temperature, power, frequency, pulse and working mode of the laser, wherein the working mode includes two types of continuous light or pulsed light, and can view the set temperature, power and other parameters in real time. By setting the spectrum real-time display module and the time domain real-time display module, it is convenient to synchronously display the frequency domain and time domain information of the current laser in real time, which is conducive to synchronously acquiring and analyzing the time domain information and the frequency domain information. By setting the frequency domain and time domain storage modules, the time domain information and the frequency domain information can be quickly and conveniently stored. The system has a high degree of integration, and has the characteristics of strong practicality, easy operation, good compatibility, etc. It is easy to promote and can meet the needs of real-time, multi-dimensional signal acquisition and processing.

[0075] The present invention also provides a mid-infrared laser pump control and time-frequency domain information acquisition method, which uses a mid-infrared laser pump control and time-frequency domain information acquisition integrated system, including the following steps:

[0076] Step 1: Use the laser communication interface to establish a link connection between the laser and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition. The laser communication interface automatically identifies the model of the laser and selects the corresponding communication protocol;

[0077] The oscilloscope communication interface is used to establish a link connection between the oscilloscope and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition. The oscilloscope communication interface automatically identifies the model of the oscilloscope and selects the corresponding communication protocol;

[0078] A link connection is established between the spectrometer and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition using the spectrometer communication interface, which automatically identifies the model of the spectrometer and selects the corresponding communication protocol;

[0079] Step 2: When starting the experiment, press the laser on button to send a laser on signal to the controller. After receiving the laser on signal, the controller controls the laser to turn on through the laser communication interface, and the laser starts working;

[0080] The continuous light working mode or the pulse light working mode is selected by the working module adjustment module, and a continuous light working mode signal or a pulse light working mode signal is sent to the controller, and the controller controls the laser to work in the continuous light working mode or the pulse light working mode through the laser communication interface after receiving the continuous light working mode signal or the pulse light working mode signal;

[0081] The required temperature data is input through the temperature adjustment module, the required power data is input through the power adjustment module, the required frequency data is input through the frequency adjustment module, and the required pulse width data is input through the pulse width adjustment module. The controller controls the operating temperature, operating power, frequency of laser emission, and pulse width of the laser through the laser communication interface according to the received temperature data, power data, frequency data, and pulse width data. In this process, the controller controls the laser through a PID control algorithm, wherein the controller output signal u(t) (such as adjusting the pump power or current) is obtained according to formula (1);

[0082]

[0083] In the formula, e(t) represents the deviation, that is, the difference between the target value and the actual value; K p Represents the proportional gain, which is used to respond to deviation; K i Represents the integral gain, which is used to eliminate steady-state errors; K d Represents the differential gain, which is used to improve the dynamic response speed;

[0084] Step 3: Collect the pulse signal of the laser through the oscilloscope, and send the pulse signal to the controller through the oscilloscope communication interface. The controller analyzes and processes the pulse signal to obtain the time domain characteristics, and generates a time domain diagram according to the time domain characteristics, and then displays it in real time through the time domain real-time display module. At the same time, the time domain information is sent to the frequency domain and time domain storage module for storage; wherein, in the process of analyzing and processing the pulse signal, the controller obtains the pulse repetition frequency according to formula (2);

[0085]

[0086] Where, T rep is the pulse repetition period;

[0087] The frequency domain signal of the laser is detected by the spectrometer, and the frequency domain signal is sent to the controller through the spectrometer communication interface. The controller analyzes and processes the frequency domain signal to obtain the frequency domain characteristics, and generates a frequency domain graph based on the frequency domain characteristics. The frequency domain real-time display module displays the image in real time. At the same time, the frequency domain information is sent to the frequency domain and time domain storage module for storage. In this process, the controller analyzes the wavelength drift according to the frequency domain signal, and obtains the wavelength deviation Δλ according to formula (3). The wavelength deviation Δλ is then input into the PID control algorithm for adjustment to obtain a new controller output signal u(t) 0 , in order to achieve real-time correction and stable control of wavelength;

[0088] Δλ=λ measured -λ target (3);

[0089] In the formula, λ measured Indicates the central wavelength measured in real time. target Indicates the target wavelength;

[0090] When the spectrometer and oscilloscope collect data simultaneously, the controller measures the accuracy of clock synchronization according to formula (4) and implements synchronous sampling of the spectrometer and oscilloscope according to formula (5). In this way, the mismatch between time domain and frequency domain data can be effectively reduced.

[0091] Δt=t osc -t spec (4);

[0092] R osc =N·R spec (5);

[0093] Where Δt represents the sampling time deviation between the spectrometer and the oscilloscope; t osc Indicates the sampling time of the oscilloscope; t spec represents the sampling time of the spectrometer; R osc Indicates the oscilloscope sampling rate; R spec Indicates the sampling rate of the spectrometer; N indicates the multiple relationship between the sampling rates of the spectrometer and the oscilloscope;

[0094] Step 4: When the experiment is finished, press the laser off button to send a laser off signal to the controller. After receiving the laser off signal, the controller controls the laser to turn off through the laser communication interface to stop the laser from working. After the laser stops working, the pump power automatically drops to zero.

[0095] The present invention has strong compatibility and is compatible with a variety of pump sources, spectrometers, oscilloscopes and other equipment from different companies. At the same time, it can easily obtain time domain information and frequency domain information, and can synchronously display the obtained time domain information and frequency domain information in real time, which helps to achieve synchronous analysis of time domain information and frequency domain information. In addition, the present invention adopts a PID control algorithm in the process of controlling the laser, and modifies the output signal in combination with the wavelength offset, thereby achieving real-time correction and stable control of the wavelength. Furthermore, when the spectrometer and oscilloscope collect data at the same time, the mismatch of time domain and frequency domain data can be effectively reduced according to the synchronous sampling method.

[0096] This method has a simple operation process, strong practicality and high control accuracy. It can realize real-time correction and stable control of wavelength. At the same time, it can effectively reduce the mismatch of time domain and frequency domain data and can be widely used in most laser systems.

Claims

1. A mid-infrared laser pump control and time-frequency domain information acquisition integrated system, characterized in that: It includes a laser on button, a laser off button, a temperature adjustment module, a power adjustment module, a frequency adjustment module, a pulse width adjustment module, a working mode adjustment module, a laser communication interface, an oscilloscope communication interface, a spectrometer communication interface, a spectrum real-time display module, a time domain real-time display module, a frequency domain and time domain storage module, and a controller; The controller is respectively connected to a laser on button, a laser off button, a temperature adjustment module, a power adjustment module, a frequency adjustment module, a pulse width adjustment module, a working mode adjustment module, a laser communication interface, an oscilloscope communication interface, a spectrometer communication interface, a spectrum real-time display module, a time domain real-time display module, and a frequency domain and time domain storage module; The laser on button is used to send a laser on signal to the controller after being pressed; The laser off button is used to send a laser on signal to the controller after being pressed; The temperature adjustment module is used to input the received external input temperature data into the controller; The power regulation module is used to input the received external input power data into the controller; The frequency adjustment module is used to input the received external input frequency data into the controller; The pulse width modulation module is used to input the received external input pulse width data into the controller; The working module adjustment module is used to input the externally selected continuous light working mode signal or pulse light working mode signal into the controller; The laser communication interface is used to establish a communication link between the laser and the controller, and is also used to automatically identify the model of the laser according to the different models of the connected laser, and automatically select a corresponding communication protocol; The oscilloscope communication interface is used to establish a communication link between the oscilloscope and the controller, and is also used to automatically identify the model of the oscilloscope according to the different models of the connected oscilloscope and automatically select a corresponding communication protocol; The spectrometer communication interface is used to establish a communication link between the spectrometer and the controller, and is also used to automatically identify the model of the spectrometer according to the different models of the connected spectrometer and automatically select a corresponding communication protocol; The spectrum real-time display module is used to display the spectrum graph in real time; The time domain real-time display module is used to display the time domain graph in real time; The frequency domain and time domain storage modules are used to store frequency domain data and time domain data; The controller is used to control the laser to turn on through the laser communication interface after receiving a laser turn-on signal, to control the laser to turn off through the laser communication interface after receiving a laser turn-off signal, to control the operating temperature of the laser through the laser communication interface after receiving external input temperature data, to control the operating power of the laser through the laser communication interface after receiving external input power data, to control the frequency of the laser emitted by the laser through the laser communication interface after receiving external input frequency data, to control the pulse width of the laser emitted by the laser through the laser communication interface after receiving external input pulse width data, to control the laser to operate in a continuous light operating mode and a pulse light operating mode through the laser communication interface after receiving a continuous light operating mode signal or a pulse light operating mode signal, to receive frequency domain information emitted by a spectrometer, to generate a spectrum diagram based on the received frequency domain information, and then to send the spectrum diagram to a spectrum real-time display module, to receive time domain information emitted by an oscilloscope, to generate a time domain diagram based on the received time domain information, and then to send the time domain diagram to the time domain real-time display module.

2. The mid-infrared laser pump control and time-frequency domain information acquisition integrated system according to claim 1, characterized in that: The laser communication interface supports UART, USB, Ethernet, and RS-232 serial communication protocols.

3. The mid-infrared laser pump control and time-frequency domain information acquisition integrated system according to claim 2, characterized in that: The oscilloscope communication interface supports UART, USB, Ethernet, and RS-232 serial communication protocols.

4. A mid-infrared laser pump control and time-frequency domain information acquisition integrated system according to any one of claims 1 to 3, characterized in that: The spectrometer communication interface supports UART, USB, Ethernet, and RS-232 serial communication protocols.

5. A mid-infrared laser pump control and time-frequency domain information acquisition integrated system according to any one of claim 4, characterized in that: The controller is a python platform built on the ESP32 development board.

6. A mid-infrared laser pump control and time-frequency domain information acquisition integrated system according to any one of claim 5, characterized in that: It also includes a power module, which is used to supply electricity.

7. A method for mid-infrared laser pump control and time-frequency domain information collection, using a mid-infrared laser pump control and time-frequency domain information collection integrated system as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Use the laser communication interface to establish a link connection between the laser and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition. The laser communication interface automatically identifies the model of the laser and selects the corresponding communication protocol; The oscilloscope communication interface is used to establish a link connection between the oscilloscope and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition. The oscilloscope communication interface automatically identifies the model of the oscilloscope and selects the corresponding communication protocol; A link connection is established between the spectrometer and the integrated system of mid-infrared laser pump control and time-frequency domain information acquisition using the spectrometer communication interface, which automatically identifies the model of the spectrometer and selects the corresponding communication protocol; Step 2: When starting the experiment, press the laser on button to send a laser on signal to the controller. After receiving the laser on signal, the controller controls the laser to turn on through the laser communication interface, and the laser starts working; The continuous light working mode or the pulse light working mode is selected by the working module adjustment module, and a continuous light working mode signal or a pulse light working mode signal is sent to the controller, and the controller controls the laser to work in the continuous light working mode or the pulse light working mode through the laser communication interface after receiving the continuous light working mode signal or the pulse light working mode signal; The required temperature data is input through the temperature adjustment module, the required power data is input through the power adjustment module, the required frequency data is input through the frequency adjustment module, and the required pulse width data is input through the pulse width adjustment module. The controller controls the operating temperature, operating power, frequency of laser emission, and pulse width of the laser through the laser communication interface according to the received temperature data, power data, frequency data, and pulse width data. In this process, the controller controls the laser through the PID control algorithm, wherein the controller output signal u(t) is obtained according to formula (1); In the formula, e(t) represents the deviation, that is, the difference between the target value and the actual value; K p Represents the proportional gain, which is used to respond to deviation; K i Represents the integral gain, which is used to eliminate steady-state error; K d Represents the differential gain, which is used to improve the dynamic response speed; Step 3: Collect the pulse signal of the laser through the oscilloscope, and send the pulse signal to the controller through the oscilloscope communication interface. The controller analyzes and processes the pulse signal to obtain the time domain characteristics, and generates a time domain diagram according to the time domain characteristics, and then displays it in real time through the time domain real-time display module. At the same time, the time domain information is sent to the frequency domain and time domain storage module for storage; wherein, in the process of analyzing and processing the pulse signal, the controller obtains the pulse repetition frequency according to formula (2); Where, T rep is the pulse repetition period; The frequency domain signal of the laser is detected by the spectrometer, and the frequency domain signal is sent to the controller through the spectrometer communication interface. The controller analyzes and processes the frequency domain signal to obtain the frequency domain characteristics, and generates a frequency domain graph based on the frequency domain characteristics. The frequency domain real-time display module displays the image in real time. At the same time, the frequency domain information is sent to the frequency domain and time domain storage module for storage. In this process, the controller analyzes the wavelength drift according to the frequency domain signal, and obtains the wavelength deviation Δλ according to formula (3). The wavelength deviation Δλ is then input into the PID control algorithm for adjustment to obtain a new controller output signal u(t) 0 , in order to achieve real-time correction and stable control of wavelength; Dλ=λ measured -l target (3); In the formula, λ measured Indicates the central wavelength measured in real time. target Indicates the target wavelength; When the spectrometer and the oscilloscope collect data simultaneously, the controller measures the accuracy of clock synchronization according to formula (4); and realizes synchronous sampling of the spectrometer and the oscilloscope according to formula (5); Δt=t osc -t spec (4); R osc =N·R spec (5); Where Δt represents the sampling time deviation between the spectrometer and the oscilloscope; t osc Indicates the sampling time of the oscilloscope; t spec represents the sampling time of the spectrometer; R osc Indicates the oscilloscope sampling rate; R spec Indicates the sampling rate of the spectrometer; N indicates the multiple relationship between the sampling rates of the spectrometer and the oscilloscope; Step 4: When the experiment is over, press the laser off button to send a laser off signal to the controller. After receiving the laser off signal, the controller controls the laser to turn off through the laser communication interface to stop the laser from working. After the laser stops working, the pump power automatically drops to zero.

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