Transparent optical medium shock wave parameter real-time measuring device

Abstract

The invention belongs to the field of optical instruments, and provides a transparent optical medium shock wave parameter real-time measuring device which comprises a sample containing assembly, a glass cover plate is arranged at the top of the sample containing assembly, a heating cavity is formed in the sample containing assembly, an optical medium is arranged in the heating cavity, and the heating cavity is used for heating the optical medium; parallel glass windows are symmetrically formed in the sample accommodating assembly in the horizontal direction; the laser emitting assembly is used for emitting laser; the method has the beneficial effects that the morphology and radius characteristics of the transparent solid optical medium in the in-vivo and in-vitro shock wave dynamic deepening process are accurately recorded, and parameters such as wavefront velocity, pressure intensity, temperature and density are deduced; and high-pressure shock wave characteristic parameters in a transparent gas or liquid medium with certain temperature, pressure and type can be recorded, a feasible working environment is provided for improving the workpiece machining quality in the field of laser micro-nano machining, and laser parameters are optimized.

Description

Technical Field

[0001] The present application belongs to the field of optical instruments, and in particular relates to a device for real-time determination of shock wave parameters of a transparent optical medium. Background Art

[0002] Since tens of thousands of highly transparent optical components are used in high-power laser systems in the field of laser inertial confinement nuclear fusion, extremely high requirements are placed on the UV laser damage resistance of transparent solid optical medium components. The damage resistance of optical components directly determines the stability and life of high-power laser systems. In the field of laser micro-nano processing, different degrees of requirements are placed on the processing quality of workpieces, and the environmental gas parameters directly affect the processing quality. In the military field, air explosion shock damage dynamics and performance evaluation have always been an important hot spot and difficulty. Therefore, it is objectively necessary and has huge application needs to provide a real-time measurement device for shock wave parameters of transparent optical media to evaluate the dynamic characteristics of ultra-high pressure shock damage induced by lasers in transparent solid optical media and transparent gases with different characteristic parameters. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In order to solve the above problems, the present application provides a device for real-time determination of shock wave parameters of a transparent optical medium, comprising: A sample holding component, wherein a glass cover is provided on the top of the sample holding component, a heating cavity is provided inside the sample holding component, an optical medium is provided in the heating cavity, the heating cavity is used to heat the optical medium, and the sample holding component is symmetrically provided with parallel glass windows along the horizontal direction; A laser emitting assembly, the laser emitting assembly is used to emit laser light, and the laser light passes through the glass cover plate and is focused on the surface of the optical medium; An imaging and recording component, wherein the imaging and recording component takes a picture of the optical medium through the parallel glass window to collect image information of the optical medium after being acted upon by the laser; The remote terminal is used to receive the image information collected by the imaging and recording component.

[0005] Optionally, the laser emission assembly includes a laser emitter, a first shutter, a first beam splitter, an aperture and a microscope objective lens which are arranged in sequence; The laser emitter, the first shutter and the first beam splitter are located on the same plane. The laser emitted by the laser emitter is reflected by the first beam splitter and then focused on the surface of the optical medium through the aperture and the microscope objective lens. The aperture can dynamically adjust the size of the laser beam spot diameter and control the beam spot diameter of the laser focused on the surface of the optical medium through the microscope objective lens.

[0006] Optionally, a half-wave plate, a polarizer, a first collimator and a beam expander are arranged in sequence between the first shutter and the first beam splitter. The half-wave plate and the polarizer cooperate to dynamically and continuously attenuate the laser and feed it into the first collimator. The first collimator can convert the divergent light of the laser into parallel light and feed it into the beam expander; the beam expander is used to expand the spot diameter of the laser.

[0007] Optionally, the laser emission assembly further includes: a second beam splitter, a first photodetector, an oscilloscope and a power energy meter; The laser beam transmitted through the first beam splitter is reflected by the second beam splitter and then fed into the oscilloscope through the first photodetector; The laser beam transmitted through the first beam splitter is transmitted through the second beam splitter and then fed into the power energy meter.

[0008] Optionally, the imaging and recording component includes a flash lamp, a second shutter, a second collimator, an attenuation plate and a first filter which are sequentially arranged on one side of the sample holding component. The light beam of the flash lamp passes through the second collimator, the attenuation plate and the first filter in sequence and then is fed into the surface of the optical medium after the laser is focused through the glass window.

[0009] Optionally, the imaging and recording assembly further comprises a second filter, a third beam splitter, an amplifier and a camera which are sequentially arranged on the other side of the sample holding assembly; The light beam from the flash lamp to the surface of the optical medium is transmitted through the second filter and the third beam splitter in sequence, and then is input to the camera through the amplifier, and the laser ablation feather morphology of the surface of the optical medium is imaged on the camera.

[0010] Optionally, the imaging and recording assembly further includes a second photodetector; The light beam reflected by the third beam splitter is fed into the oscilloscope via the second photodetector.

[0011] Optionally, it also includes a gas compressor, a vacuum pump and an air source. The sample holding component is provided with an air inlet pipeline and an air outlet pipeline. The air inlet pipeline and the air outlet pipeline are respectively provided with control valves. The gas compressor is arranged between the air inlet pipeline and the air source, and the vacuum pump is connected to the air outlet pipeline.

[0012] Optionally, it further includes a three-dimensional platform, the sample holding component is arranged on the three-dimensional platform, and the remote terminal is electrically connected to the three-dimensional platform.

[0013] Optionally, it also includes a pulse delay controller and a shutter controller; the shutter controller is electrically connected to the first shutter and the second shutter, and the pulse delay controller is electrically connected to the laser emitter, the flash, the shutter controller and the camera.

[0014] Beneficial Effects A device for real-time determination of shock wave parameters of transparent optical media provided in an embodiment of the present invention accurately records the morphology and radius characteristics of the shock wave in the dynamic evolution process inside and outside the transparent solid optical medium, and derives parameters such as wavefront velocity, pressure, temperature, and density; it can also record the characteristic parameters of high-pressure shock waves in transparent gas or liquid media of a certain temperature, pressure, and type, thereby providing a damage-resistant approach for key optical components for the stable operation of high-power laser systems, providing a feasible working environment and optimizing laser parameters for improving the processing quality of workpieces in the field of laser micro-nano processing, and providing a scientific and practical basis for evaluating the shock dynamics characteristics and damage performance in the working environment gas in the field of explosion and shock dynamics. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 The present invention is a flow chart of the device for real-time determination of shock wave parameters of transparent optical medium.

[0015] The reference numerals are: 1. Sample holding assembly; 2. Glass cover; 3. Remote terminal; 4. Laser transmitter; 5. First shutter; 6. First beam splitter; 7. Aperture; 8. Microscope objective; 9. Half-wave plate; 10. Polarizer; 11. First collimator; 12. Beam expander; 13. Second beam splitter; 14. First photodetector; 15. Oscilloscope; 16. Power energy meter; 17. Flash lamp; 18. Second shutter; 19. Second collimator; 20. Attenuator; 21. First filter; 22. Second filter; 23. Third beam splitter; 24. Amplifier; 25. Camera; 26. Second photodetector; 27. Three-dimensional platform; 28. Pulse delay controller; 29. ​​Shutter controller. DETAILED DESCRIPTION

[0016] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] See also Figure 1 As shown, according to an embodiment of the present application, a device for real-time determination of shock wave parameters of a transparent optical medium is provided, comprising: A sample containing component 1, wherein a glass cover plate 2 is disposed on the top of the sample containing component 1, a heating cavity is provided inside the sample containing component 1, an optical medium is provided in the heating cavity, and the heating cavity is used to heat the optical medium. The sample containing component 1 is symmetrically provided with parallel glass windows in a horizontal direction; A laser emitting component, which is used to emit laser light, and the laser light passes through the glass cover plate 2 and is focused on the surface of the optical medium; An imaging and recording component, which takes a picture of the optical medium through a parallel glass window to collect image information of the optical medium after being acted upon by the laser; The remote terminal 3 is used to receive the image information collected by the imaging and recording component.

[0021] Specifically, the sample holding assembly 1 is used to place the transparent optical medium. The glass cover plate 2 arranged on the top can not only allow the laser to pass through smoothly and focus on the surface of the optical medium in the heating chamber, but also play a good sealing role for the heating chamber, ensuring that a stable environment can be maintained under different experimental conditions. The transparent optical medium inside the heating chamber can be various types of transparent solid, gas or liquid medium. When the optical medium is a transparent solid, the laser emitted by the laser emitting assembly is focused on its surface. When the energy density exceeds the breakdown threshold of the ambient gas and the optical transparent medium, a strong plasma will be generated, including ambient gas plasma and optical medium plasma. When the plasma expands rapidly, a high-pressure thermoelastic shock wave is generated inside and outside the optical medium. After a certain delay, the imaging and recording component can accurately record the morphology and radius of the shock wave propagating in the optical medium. If the laser emitted by the laser emitting component is not focused on the transparent solid optical medium through the transparent cover, but is focused on a transparent gas or liquid medium of a certain type, at different temperatures and under different pressure conditions, when the laser energy density exceeds the breakdown threshold of the gas or liquid medium, the gas or liquid medium will also be broken down by the laser to generate an ultra-high-pressure shock wave, and the imaging and recording component will be used to record the morphology and radius characteristics of the shock wave. It can accurately record the morphology and radius characteristics of the dynamic evolution of shock waves inside and outside the transparent solid optical medium, and can also record the characteristic parameters of high-pressure shock waves in transparent gas or liquid media of a certain temperature, pressure and type. According to certain theoretical physical models and formulas, the wavefront velocity, pressure, temperature, density and other parameters can be derived. It can provide a way to resist damage to key optical components for the stable operation of high-power laser systems. It can also provide a feasible working environment and optimize laser parameters for improving the processing quality of workpieces in the field of laser micro-nano processing. In addition, it can also provide a scientific basis and practical reference for evaluating the impact dynamics characteristics and damage performance of the working environment gas in the field of explosion and impact dynamics.

[0022] The parallel glass windows symmetrically opened in the horizontal direction of the sample holding component 1 provide an ideal observation channel for the imaging recording component, ensuring that the state of the optical medium after the laser action can be clearly photographed. The imaging recording component takes a picture of the optical medium through the parallel glass windows to collect image information of the optical medium after the laser action.

[0023] The remote terminal 3 receives the image information collected by the imaging recording component, and stores, analyzes and displays it. The remote terminal 3 can process and analyze the image information in depth, extract various parameters of shock waves inside and outside the optical medium, and provide strong support for studying the dynamic characteristics of shock waves in transparent optical media.

[0024] The laser emission assembly includes a laser emitter 4, a first shutter 5, a first beam splitter 6, an aperture 7 and a microscope objective lens 8 which are arranged in sequence; The laser emitter 4, the first shutter 5 and the first beam splitter 6 are located on the same plane. The laser emitted by the laser emitter 4 is reflected by the first beam splitter 6 and then focused on the surface of the optical medium through the aperture 7 and the microscope objective lens 8. The aperture 7 can dynamically adjust the size of the laser beam spot diameter and control the beam spot diameter of the laser focused on the surface of the optical medium after passing through the microscope objective lens 8.

[0025] Specifically, the laser emission assembly includes a laser emitter 4, a first shutter 5, a first beam splitter 6, an aperture 7 and a microscope objective 8 which are arranged in sequence. The laser emitter 4 is used to emit laser light. The laser emitter 4, the first shutter 5 and the first beam splitter 6 are located on the same plane, ensuring the accuracy and stability of the laser propagation path.

[0026] The first shutter 5 plays a control role in the laser emission assembly. It can quickly open and close the laser channel according to the needs of the experiment to achieve precise control of the laser emission time. When it is necessary to emit laser, the first shutter 5 opens, and the laser is emitted from the laser emitter 4 and enters the subsequent optical element; when it is not necessary to emit laser, the first shutter 5 closes to prevent the propagation of laser, ensuring the safety and accuracy of the experiment.

[0027] The first beam splitter 6 can reflect a part of the laser emitted by the laser emitter 4 and transmit the other part. The reflected laser passes through the aperture 7 and the microscope objective 8 and is focused on the surface of the optical medium, triggering physical changes in the optical medium, such as generating shock waves. The reflectivity and transmittance of the first beam splitter 6 can be adjusted according to experimental requirements to achieve the distribution and control of laser energy.

[0028] The aperture 7 can dynamically adjust the size of the incident laser beam spot diameter, thereby controlling the beam spot diameter of the laser focused on the surface of the optical medium through the microscope objective 8. The aperture 7 can be adjusted by mechanical means or electronic control to accurately control the size of the laser beam spot according to different experimental requirements. For example, when it is necessary to reduce the focused laser beam spot to increase the energy density, the aperture of the aperture 7 can be reduced; when it is necessary to expand the laser beam spot to cover a larger area, the aperture of the aperture 7 can be increased. The dynamic adjustment function of the aperture 7 enables the laser emission assembly to adapt to different optical media and experimental conditions, thereby improving the flexibility and accuracy of the experiment.

[0029] The microscope objective lens 8 focuses the laser light adjusted by the aperture 7 onto the surface of the optical medium. The microscope objective lens 8 has a high magnification function and a high-resolution imaging capability, and can focus the laser light into a very small beam spot, thereby increasing the energy density of the laser light and inducing a stronger shock wave. The focal length and numerical aperture of the microscope objective lens 8 can be selected according to the experimental requirements to achieve precise control of the laser focus position and beam spot diameter.

[0030] During operation, the various components of the laser emission assembly work together to achieve precise control and focusing of the laser. First, the laser emitter 4 emits a laser, and the first shutter 5 controls the emission time of the laser according to the experimental requirements. After the laser passes through the first beam splitter 6, the reflected part passes through the aperture 7 and the microscope objective 8 and is focused on the surface of the optical medium. The aperture 7 dynamically adjusts the size of the laser beam spot diameter to ensure that the laser can form a suitable energy density on the surface of the optical medium. The microscope objective 8 focuses the laser into a small beam spot light pulse, which penetrates the optical solid, gas, and liquid medium to generate a high-pressure shock wave.

[0031] A half-wave plate 9, a polarizer 10, a first collimator 11 and a beam expander 12 are arranged in sequence between the first shutter 5 and the first beam splitter 6. The half-wave plate 9 and the polarizer 10 cooperate to dynamically and continuously attenuate the laser and feed it to the first collimator 11. The first collimator 11 can convert the divergent light of the laser into parallel light and feed it to the beam expander 12; the beam expander 12 is used to expand the spot diameter of the laser.

[0032] Specifically, a half-wave plate 9, a polarizer 10, a first collimator 11 and a beam expander 12 are sequentially arranged between the first shutter 5 and the first beam splitter 6. The half-wave plate 9, as an important optical element, can accurately adjust the polarization state of the laser. By rotating the angle of the half-wave plate 9, the polarization direction of the laser can be changed, thereby realizing dynamic control of the polarization characteristics of the laser. The polarizer 10 further performs polarization screening on the laser adjusted by the half-wave plate 9. The polarizer 10 only allows lasers with a specific polarization direction to pass, thereby improving the polarization purity of the laser and reducing the interference of stray polarized light. The half-wave plate 9 and the polarizer 10 cooperate with each other to realize dynamic and continuous attenuation of the laser energy, and input the adjusted laser into the first collimator 11.

[0033] The first collimator 11 converts the divergent light of the laser into parallel light, making the laser more stable in the subsequent transmission process and reducing energy loss. At the same time, the output of parallel light also provides uniform light input for subsequent optical elements, such as the beam expander 12, to ensure the accuracy and stability of the entire optical path.

[0034] The beam expander 12 can expand the input laser spot diameter to a desired size. The beam expander 12 can be adjusted according to experimental requirements to achieve different degrees of spot expansion.

[0035] During operation, the half-wave plate 9 and the polarizer 10 first adjust and attenuate the polarization of the laser to provide suitable laser characteristics for subsequent optical processing. The first collimator 11 converts the divergent laser into parallel light, improving the stability of the laser and the accuracy of the optical path. The beam expander 12 expands the spot diameter of the laser according to the experimental requirements to meet the requirements of the laser irradiation range in different experimental scenarios. The coordinated work of these optical elements enables the laser emission assembly to output lasers with specific characteristics, providing support for the subsequent laser to focus on the surface or interior of the transparent optical medium through the first beam splitter 6, the aperture 7 and the microscope objective 8.

[0036] The laser emission assembly also includes: a second beam splitter 13, a first photodetector 14, an oscilloscope 15 and a power energy meter 16; The laser beam transmitted through the first beam splitter 6 is reflected by the second beam splitter 13 and then fed into the oscilloscope 15 through the first photodetector 14; The laser beam transmitted through the first beam splitter 6 is transmitted through the second beam splitter 13 and then fed into the power energy meter 16 .

[0037] Specifically, the laser emission assembly also includes a second beam splitter 13, a first photodetector 14, an oscilloscope 15 and a power energy meter 16. When the laser light transmitted by the first beam splitter 6 enters the second beam splitter 13, a portion of the laser light is reflected and another portion of the laser light is transmitted. The laser light reflected by the second beam splitter 13 passes through the first photodetector 14, which can quickly and accurately convert the received optical signal into an electrical signal. The intensity of this electrical signal is proportional to the intensity of the optical signal, so that the intensity information of the laser light can be indirectly obtained by measuring the electrical signal. The first photodetector 14 transmits the converted electrical signal to the oscilloscope 15. The oscilloscope 15 can display the waveform of the electrical signal in real time. By observing the waveform on the oscilloscope 15, the time domain characteristics of the laser can be intuitively understood.

[0038] Meanwhile, another part of the laser light transmitted through the first beam splitter 6 and transmitted through the second beam splitter 13 is transmitted to the power energy meter 16. The power energy meter 16 can accurately measure the power and energy of the laser light, and can monitor and analyze the laser stability parameters in real time.

[0039] The imaging and recording component includes a flash lamp 17, a second shutter 18, a second collimator 19, an attenuation plate 20 and a first filter 21 which are sequentially arranged on one side of the sample holding component 1. The light beam of the flash lamp 17 passes through the second collimator 19, the attenuation plate 20 and the first filter 21 in sequence and is then fed to the surface of the optical medium after the laser is focused through a glass window.

[0040] Specifically, the imaging and recording assembly includes a flash lamp 17, a second shutter 18, a second collimator 19, an attenuation plate 20 and a first filter 21 located on one side of the sample holding assembly 1. The flash lamp 17, as an illumination light source, has the characteristics of high luminous intensity and short pulse duration, and can generate high-intensity light pulses to provide sufficient illumination for the optical medium. The second shutter 18 is located after the flash lamp 17, and it can accurately control the on-off time of the light beam of the flash lamp 17. According to the needs of the experiment, the second shutter 18 can be opened and closed quickly to ensure that the light beam of the flash lamp 17 passes at the appropriate time point. The second collimator 19 can collimate the light beam with a certain divergence angle emitted by the flash lamp 17, greatly reduce the divergence angle of the light beam, and form a relatively parallel light beam. Through the second collimator 19, it can be ensured that the light beam of the flash lamp 17 has better directionality and stability when entering the subsequent optical element. The attenuation plate 20 is located after the second collimator 19, and it can effectively control the intensity of the light entering the heating chamber. According to different optical medium characteristics and experimental requirements, the attenuation coefficient of the attenuation plate 20 can be adjusted to avoid excessive light intensity causing adverse effects on the optical medium in the heating chamber, while ensuring that the beam intensity of the flash lamp 17 is within an appropriate range. The first filter 21 can reflect or absorb light of other wavelengths and only allow light within a specific wavelength range to pass. By selecting a suitable filter, the interference of stray light can be removed and the clarity and contrast of imaging can be improved. After being processed by the second collimator 19, the attenuation plate 20 and the first filter 21, the light beam emitted by the flash lamp 17 is fed to the surface of the optical medium after the laser is focused through the glass window, providing suitable lighting conditions for the surface or interior of the optical medium, so that the state of the optical medium after the laser action can be accurately recorded in the imaging device.

[0041] The imaging and recording assembly further includes a second filter 22, a third beam splitter 23, an amplifier 24 and a camera 25 which are sequentially arranged on the other side of the sample holding assembly 1; The light beam inputted to the surface of the optical medium by the flash lamp 17 passes through the second filter 22 and the third beam splitter 23 in sequence, and then is inputted to the camera 25 through the amplifier 24 . The laser ablation feather morphology of the surface of the optical medium is imaged on the camera 25 .

[0042] Specifically, the imaging and recording component includes a second filter 22, a third beam splitter 23, an amplifier 24 and a camera 25 located on the other side of the sample holding component 1. The second filter 22 plays a key filtering role in the imaging and recording component. When the light beam fed to the surface of the optical medium by the flash lamp 17 passes through this area, the second filter 22 can further filter out stray light outside the specific wavelength range. The clarity and contrast of the imaging can be effectively improved to ensure that the camera 25 can capture the most accurate optical information. The light beam is fed to the third beam splitter 23 after passing through the second filter 22. The light beam transmitted through the third beam splitter 23 enters the amplifier 24, and the amplifier 24 can amplify the light signal. According to different experimental conditions and the requirements of the camera 25, the amplification factor of the amplifier 24 can be adjusted to ensure that the intensity of the light signal can meet the acquisition requirements of the camera 25, thereby improving the quality and resolution of the imaging. The camera 25 can accurately image the laser ablation feather morphology on the surface of the optical medium. The camera 25 can capture the ablation feather of the optical medium under the action of the laser, including parameters such as the impact wave morphology. The camera 25 can store and analyze the captured image information and transmit it to a remote terminal, which can provide a deep understanding of various parameters and characteristics of the transparent optical medium under the action of the shock wave.

[0043] The imaging and recording assembly further includes a second photodetector 26; The light beam reflected by the third beam splitter 23 is fed into the oscilloscope 15 via the second photodetector 26 .

[0044] Specifically, after the third beam splitter 23 splits the light beam, the reflected light beam is converted into an electrical signal by the second photodetector 26 and transmitted to the oscilloscope 15 for display and analysis. This further improves the function of the imaging and recording component and improves the measurement accuracy and reliability of the system.

[0045] The real-time measurement device of shock wave parameters of transparent optical medium also includes a gas compressor, a vacuum pump and a gas source. An air inlet pipeline and an air outlet pipeline are opened on the sample holding component 1, and control valves are respectively arranged on the air inlet pipeline and the air outlet pipeline. The gas compressor is arranged between the air inlet pipeline and the gas source, and the vacuum pump is connected to the air outlet pipeline.

[0046] Specifically, the sample holding component 1 is provided with an air inlet pipeline and an air outlet pipeline. The gas source is connected to the air inlet pipeline, and can provide different types of gas media for the heating chamber. A control valve is provided on the air inlet pipeline, and the control valve can be an electric regulating valve. The valve opening can be accurately adjusted by the electrical signal sent by the remote terminal 3, so as to accurately control the gas inlet flow rate; at the same time, a gas compressor is also provided in the air inlet pipeline, and the gas compressor is connected to the air source. The gas compressor can compress the gas output by the gas source. When it is necessary to inject gas into the sample holding component 1, the control valve of the air inlet pipeline is opened, and the gas compressor works to compress the gas in the gas source and inject it into the heating chamber at a certain pressure. A control valve is also provided on the air outlet pipeline, and the air outlet pipeline is also connected to a vacuum pump. The function of the vacuum pump is to perform an air extraction and pressure reduction operation on the sample holding component 1, so that the pressure of the gas medium in the heating chamber can be adjusted according to the demand. The heating chamber can heat the gas or liquid in the chamber to obtain the experimental conditions of laser ablation gas or liquid under certain temperature conditions. The real-time measuring device for shock wave parameters of transparent optical medium also includes a three-dimensional platform 27 , the sample holding component 1 is arranged on the three-dimensional platform 27 , and the remote terminal 3 is electrically connected to the three-dimensional platform 27 .

[0047] Specifically, the three-dimensional platform 27 is used to support the sample holding component 1, and the three-dimensional movement of the three-dimensional platform 27 is controlled by the remote terminal 3 so that the surface of the optical medium is always located on the laser focusing plane, ensuring that the laser can penetrate the optical medium and generate shock waves.

[0048] The real-time measurement device for shock wave parameters of transparent optical media also includes a pulse delay controller 28 and a shutter controller 29; the shutter controller 29 is electrically connected to the first shutter 5 and the second shutter 18, and the pulse delay controller 28 is electrically connected to the laser emitter 4, the flash 17, the shutter controller 29 and the camera 25.

[0049] Specifically, the pulse delay controller 28 is electrically connected to the laser emitter 4, the flash lamp 17, the shutter controller 29 and the camera 25, and can accurately delay the working time of these key components. For the laser emitter 4, the pulse delay controller 28 can accurately set the time point of laser emission to ensure that the laser acts on the optical medium at the appropriate time. Similarly, for the flash lamp 17, the pulse delay controller 28 can accurately control its light emission time to match it with the action time of the laser to provide the best lighting conditions for the optical medium. In the connection with the shutter controller 29, the pulse delay controller 28 can send instructions to the shutter controller 29 to achieve accurate control of the first shutter 5 and the second shutter 18, ensuring that the shutter is opened or closed at a specific time point to allow or prevent the passage of the laser and flash lamp 17 beams. For the camera 25, the pulse delay controller 28 can coordinate its shooting time so that the camera 25 can capture images at a certain delay time after the optical medium is acted on by the laser, thereby obtaining the most accurate shock wave parameter information. The pulse delay controller 28 and the shutter controller 29 work together to achieve precise timing control of the entire system. By precisely adjusting the synchronous or asynchronous working time of the laser emitter 4, the flash lamp 17, the shutter and the camera 25, it is possible to ensure that high-quality image information and accurate shock wave related parameters can be obtained under different experimental conditions.

[0050] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A device for real-time determination of shock wave parameters of transparent optical medium, characterized in that: include: A sample containing component (1), wherein a glass cover plate (2) is arranged on the top of the sample containing component (1), a heating chamber is provided inside the sample containing component (1), an optical medium is arranged inside the heating chamber, and the heating chamber is used to heat the optical medium, and the sample containing component (1) is symmetrically provided with parallel glass windows in a horizontal direction; A laser emitting component, the laser emitting component is used to emit laser light, the laser light passes through the glass cover plate (2) and is focused on the surface of the optical medium; An imaging and recording component, wherein the imaging and recording component takes a picture of the optical medium through the parallel glass window to collect image information of the optical medium after being acted upon by the laser; The remote terminal (3) is used to receive the image information collected by the imaging and recording component.

2. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 1, characterized in that: The laser emission assembly comprises a laser emitter (4), a first shutter (5), a first beam splitter (6), an aperture (7) and a microscope objective lens (8) which are arranged in sequence; The laser emitter (4), the first shutter (5) and the first beam splitter (6) are located on the same plane. The laser emitted by the laser emitter (4) is reflected by the first beam splitter (6) and then focused on the surface of the optical medium through the aperture (7) and the microscope objective lens (8). The aperture (7) can dynamically adjust the size of the laser beam spot diameter to control the beam spot diameter of the laser focused on the surface of the optical medium through the microscope objective lens (8).

3. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 2, characterized in that: A half-wave plate (9), a polarizing plate (10), a first collimator (11) and a beam expander (12) are arranged in sequence between the first shutter (5) and the first beam splitter (6); the half-wave plate (9) and the polarizing plate (10) cooperate to dynamically and continuously attenuate the laser and feed it to the first collimator (11); the first collimator (11) can convert the divergent light of the laser into parallel light and feed it to the beam expander (12); the beam expander (12) is used to expand the spot diameter of the laser.

4. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 3, characterized in that: The laser emission assembly further comprises: a second beam splitter (13), a first photodetector (14), an oscilloscope (15) and a power energy meter (16); The laser light transmitted through the first beam splitter (6) is reflected by the second beam splitter (13) and then input into the oscilloscope (15) through the first photodetector (14); The laser light transmitted through the first beam splitter (6) is transmitted through the second beam splitter (13) and then fed into the power energy meter (16).

5. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 4, characterized in that: The imaging recording component comprises a flash lamp (17), a second shutter (18), a second collimator (19), an attenuation plate (20) and a first filter (21) which are sequentially arranged on one side of the sample holding component (1); the light beam of the flash lamp (17) sequentially passes through the second collimator (19), the attenuation plate (20) and the first filter (21) and then is fed to the surface of the optical medium after the laser is focused through the glass window.

6. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 5, characterized in that: The imaging and recording component further comprises a second filter (22), a third beam splitter (23), an amplifier (24) and a camera (25) which are sequentially arranged on the other side of the sample holding component (1); The light beam inputted to the surface of the optical medium by the flash lamp (17) passes through the second filter (22) and the third beam splitter (23) in sequence, and then is inputted to the camera (25) through the amplifier (24), and the laser ablation feather morphology of the surface of the optical medium is imaged on the camera (25).

7. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 6, characterized in that: The imaging and recording assembly further comprises a second photodetector (26); The light beam reflected by the third beam splitter (23) is fed into the oscilloscope (15) via the second photodetector (26).

8. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 7, characterized in that: It also includes a gas compressor, a vacuum pump and a gas source. The sample holding component (1) is provided with an air inlet pipeline and an air outlet pipeline. The air inlet pipeline and the air outlet pipeline are respectively provided with control valves. The gas compressor is arranged between the air inlet pipeline and the gas source, and the vacuum pump is connected to the air outlet pipeline.

9. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 8, characterized in that: It also includes a three-dimensional platform (27), the sample holding component (1) is arranged on the three-dimensional platform (27), and the remote terminal (3) is electrically connected to the three-dimensional platform (27).

10. The device for real-time determination of shock wave parameters of transparent optical medium according to claim 9, characterized in that: It also includes a pulse delay controller (28) and a shutter controller (29); the shutter controller (29) is electrically connected to the first shutter (5) and the second shutter (18), and the pulse delay controller (28) is electrically connected to the laser emitter (4), the flash lamp (17), the shutter controller (29) and the camera (25).

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