阅读说明：本技术 一种激光泵浦腔内强制排空气水路的方法 (Method for forcibly exhausting air water way in laser pumping cavity ) 是由 贾养春 潘胜文 于 2021-08-27 设计创作，主要内容包括：本发明涉及激光泵浦技术领域,具体涉及一种激光泵浦腔内强制排空气水路的方法；本发明通过将模架放置在测试台上,开启冷却结构和内部激光棒,随后将钟形罩安装在腔镜全反镜的外表面,同时将钟形罩和传送水管绕设在模架的支杆上,将排气阀安装在模架的外表面,然后通过启动微型水泵带动注水装置内部的存储水沿着激光泵浦本体的内壁进入钟形罩的内部形成一个完整的闭合水路,在多次进行循环水后,水路内部的空气通过排气阀运作排出,然后通过观察冷却水发射出的激光,从而判断内部是否仍然存在空气,达到了对激光泵浦本体腔内空气完全隔绝,增强腔镜输出镜和腔镜全反镜的反射效果,在功率相等的情况下照射效果更好的目的。(The invention relates to the technical field of laser pumping, in particular to a method for forcibly exhausting an air water path in a laser pumping cavity; according to the invention, the die set is placed on the test board, the cooling structure and the internal laser rod are started, the bell-shaped cover is installed on the outer surface of the full-reflection mirror of the cavity mirror, the bell-shaped cover and the delivery water pipe are wound on the support rod of the die set, the exhaust valve is installed on the outer surface of the die set, then the micro water pump is started to drive the stored water in the water injection device to enter the bell-shaped cover along the inner wall of the laser pumping body to form a complete closed water path, after the water is circulated for many times, the air in the water path is exhausted through the operation of the exhaust valve, and then the laser emitted by the cooling water is observed to judge whether the air still exists in the inner part, so that the purposes of completely isolating the air in the cavity of the laser pumping body, enhancing the reflection effect of the output mirror and the full-reflection mirror of the cavity mirror and better irradiation effect under the condition of equal power are achieved.)

1. A method for forcibly exhausting an air water path in a laser pumping cavity is characterized by comprising the following steps:

s1, manufacturing a drainage sealing cylinder: firstly, a bell-shaped cover with an inner wall matched with the inner wall of a reflection end of a laser pump is manufactured, a delivery water pipe communicated with the interior of the laser pump is arranged on the outer surface of the bell-shaped cover, and a water injection device is arranged on the outer surface of the delivery water pipe;

s2, manufacturing of a circulating water path: an exhaust valve is arranged at the top of the bell-shaped cover, the output end of the exhaust valve faces upwards, and a micro water pump is connected in the water injection device in a transmission mode;

s3, manufacturing a die carrier: manufacturing a bearing die frame matched with the outer surfaces of the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve by using a high-molecular high-quality material;

s4, installing a drainage structure: placing a mould base on a test bench, clamping a laser pumping body at the center of the mould base body, opening a cooling structure and an internal laser rod, then installing a bell jar on the outer surface of a full-reflection mirror of a cavity mirror, clamping the bell jar on the outer surface of the mould base, winding a delivery water pipe on a support rod of the mould base, placing a water injection device at the top of the mould base, installing an exhaust valve on the outer surface of the mould base, and simultaneously communicating the input end of the exhaust valve with the top of the bell jar;

s5, starting a drainage structure: the method comprises the following steps that a micro water pump is started to drive stored water in a water injection device to enter the inside of a bell-shaped cover along the inner wall of a laser pumping body, then the water in the bell-shaped cover passes through a conveying water pipe and returns to the inside of the water injection device to form a complete closed water path, and after circulating water for many times, air in the water path is discharged through the operation of an exhaust valve;

s6, checking: whether air still exists inside the laser pump body is judged by observing whether the laser emitted when the cooling water passes through the inner wall of the laser pump body at a high speed shakes or deflects;

s7, dismantling: the laser pumping body after inspection can be detached from the outer surface of the die carrier for use.

2. The method of claim 1, wherein the method further comprises the following steps: in the step S1, the operation steps of manufacturing the drainage sealing cylinder are as follows:

1) firstly, using three-dimensional drawing software to make the pattern of the bell-shaped cover, carrying out numerical control simulation machining, using a post processor to produce a G code, and introducing the G code into the numerical control machining machine tool to carry out production and manufacture;

2) selecting a proper material, and placing the material on a numerical control machine tool, wherein the material is selected from one of WCB carbon steel and LCB low-temperature carbon steel;

3) after the processing is finished, cleaning with a cleaning solution, drying after cleaning, and then detecting whether the standard is reached or not, wherein the precision is controlled within 0.01 mm;

4) after the bell-shaped cover is manufactured, a stainless steel three-way metal hose is communicated with the outer surface of the bell-shaped cover to be used as a conveying water pipe, and a water injection device is arranged in one extra channel.

3. The method of claim 1, wherein the method further comprises the following steps: in step S2, the method further includes:

s201, arranging an installation bin with a sealing cover plate on the outer surface of a water injection device;

s202, selecting a micro water pump with the model matched with the inner wall of the installation bin and placing the micro water pump in the micro water pump;

s203, the output end of the micro water pump is in transmission connection with the input end of the water storage structure inside the water injection device and is buckled with the sealing cover plate at the top of the mounting bin.

4. The method of claim 1, wherein the method further comprises the following steps: in step S3, the method further includes:

s301, using SOLIDWORKS software to perform stress analysis on the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve which are manufactured in the steps S1 and S2, analyzing multi-angle gravity which needs to be borne by the die frame when the die frame is used, and meanwhile, arranging a clamping structure on the outer surface of the die frame to ensure that other components placed when the die frame is used cannot fall off;

s302, checking the manufacturing process of the die set by using a numerical control simulation machining program, and guiding the die set into a numerical control machining machine tool through a G code to manufacture the die after determining that the die set is correct;

s303, selecting aluminum metal with light weight and large bearing capacity to be placed on a numerical control machine tool for manufacturing.

5. The method of claim 1, wherein the method further comprises the following steps: the step S4 further includes the following steps:

s401, respectively clamping or placing the laser pump body, the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve on the outer surface of the die carrier;

s402, respectively wrapping waterproof adhesive tapes at the communication positions among the laser pump body, the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve, and installing waterproof plugs at the communication positions of pipelines inside the micro water pump and the exhaust valve;

and S403, turning on a switch of the micro water pump to drive the interior of the water injection device to start to operate, and removing the waterproof plugs and the waterproof adhesive tapes one by one until the laser pump body, the bell-shaped cover, the delivery water pipe, the water injection device, the micro water pump and the exhaust valve form complete water path communication and no leakage is ensured.

6. The method of claim 1, wherein the method further comprises the following steps: the processing environment for starting the drainage system in the step S5 is as follows: the indoor pressure is controlled to be 101.3kPa +/-1 kPa, and the constant temperature is 25 ℃ so as to avoid the gas in the cooling water from being separated out and attached to the inner wall of the laser pumping body due to the change of the temperature and the pressure.

7. The method of claim 1, wherein the method further comprises the following steps: the step S6 includes the steps of:

s601, selecting a diffuse reflection plate with white ground color and a photosensitive spraying material with a color different from that of laser;

s602, uniformly coating the photosensitive spraying material on the outer surface of the diffuse reflection plate;

s603, after the air exhaust valve stops exhausting air outwards, placing the diffuse reflection plate in front of the output end of the laser pumping body, standing for thirty seconds, and taking out for observation;

and S604, observing the color change area of the photosensitive material on the outer surface of the diffuse reflection plate to judge whether the air in the laser pump is exhausted.

8. The method of claim 1, wherein the method further comprises the following steps: in the step S7, the laser pumping body is kept underwater during the removal.

Technical Field

The invention relates to the technical field of laser pumping, in particular to a method for forcibly exhausting an air water path in a laser pumping cavity.

Background

The laser pump is generally applied to a dense wavelength division multiplexing loop optical fiber system, and has the function of directly or indirectly increasing the signal output of an optical path in a certain mode, the laser gain medium can generate spontaneous radiation under the pumping action, and the spontaneous radiation light can be stimulated to radiate in the transmission of the medium to generate light amplification. Due to the existence of the cavity mirror, only the optical fiber vertical to the cavity mirror can be continuously amplified and finally output. The function of the pump is to provide energy to the gain medium.

The existing laser pumping is in actual use, because the inner wall of the pumping needs to carry out water-cooling heat dissipation on the laser rod and the pumping lamp through cooling water, once air is generated in the laser pumping cavity, the irradiation angles of a cavity mirror output mirror and a cavity mirror total reflection mirror on the inner wall of the laser pumping can be deviated, and the actual use of the laser pumping is influenced.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, a first object of the present invention is to provide a method for forcibly exhausting an air water path in a laser pumping chamber, which solves the above-mentioned problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a method for forcibly exhausting an air water path in a laser pumping cavity comprises the following steps:

s1, manufacturing a drainage sealing cylinder: firstly, a bell-shaped cover with an inner wall matched with the inner wall of a reflection end of a laser pump is manufactured, a delivery water pipe communicated with the interior of the laser pump is arranged on the outer surface of the bell-shaped cover, and a water injection device is arranged on the outer surface of the delivery water pipe;

s2, manufacturing of a circulating water path: an exhaust valve is arranged at the top of the bell-shaped cover, the output end of the exhaust valve faces upwards, and a micro water pump is connected in the water injection device in a transmission mode;

s3, manufacturing a die carrier: manufacturing a bearing die frame matched with the outer surfaces of the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve by using a high-molecular high-quality material;

s4, installing a drainage structure: placing a mould base on a test bench, clamping a laser pumping body at the center of the mould base body, opening a cooling structure and an internal laser rod, then installing a bell jar on the outer surface of a full-reflection mirror of a cavity mirror, clamping the bell jar on the outer surface of the mould base, winding a delivery water pipe on a support rod of the mould base, placing a water injection device at the top of the mould base, installing an exhaust valve on the outer surface of the mould base, and simultaneously communicating the input end of the exhaust valve with the top of the bell jar;

s5, starting a drainage structure: the method comprises the following steps that a micro water pump is started to drive stored water in a water injection device to enter the inside of a bell-shaped cover along the inner wall of a laser pumping body, then the water in the bell-shaped cover passes through a conveying water pipe and returns to the inside of the water injection device to form a complete closed water path, and after circulating water for many times, air in the water path is discharged through the operation of an exhaust valve;

s6, checking: whether air still exists inside the laser pump body is judged by observing whether the laser emitted when the cooling water passes through the inner wall of the laser pump body at a high speed shakes or deflects;

s7, dismantling: the laser pumping body after inspection can be detached from the outer surface of the die carrier for use.

The invention is further configured to: in the step S1, the operation steps of manufacturing the drainage sealing cylinder are as follows:

1) firstly, using three-dimensional drawing software to make the pattern of the bell-shaped cover, carrying out numerical control simulation machining, using a post processor to produce a G code, and introducing the G code into the numerical control machining machine tool to carry out production and manufacture;

2) selecting a proper material, and placing the material on a numerical control machine tool, wherein the material is selected from one of WCB carbon steel and LCB low-temperature carbon steel;

3) after the processing is finished, cleaning with a cleaning solution, drying after cleaning, and then detecting whether the standard is reached or not, wherein the precision is controlled within 0.01 mm;

4) after the bell-shaped cover is manufactured, a stainless steel three-way metal hose is communicated with the outer surface of the bell-shaped cover to be used as a conveying water pipe, and a water injection device is arranged in one extra channel.

By adopting the technical scheme: the produced drainage sealing cylinder has better air tightness, and the influence of cooling water on the corrosion of a delivery water pipe on the service life is avoided.

The invention is further configured to: in step S2, the method further includes:

s201, arranging an installation bin with a sealing cover plate on the outer surface of a water injection device;

s202, selecting a micro water pump with the model matched with the inner wall of the installation bin and placing the micro water pump in the micro water pump;

s203, the output end of the micro water pump is in transmission connection with the input end of the water storage structure inside the water injection device and is buckled with the sealing cover plate at the top of the mounting bin.

By adopting the technical scheme: the miniature water pump is sealed in the water injection device, so that the miniature water pump is prevented from being damaged due to water inflow or dampness.

The invention is further configured to: in step S3, the method further includes:

s301, using SOLIDWORKS software to perform stress analysis on the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve which are manufactured in the steps S1 and S2, analyzing multi-angle gravity which needs to be borne by the die frame when the die frame is used, and meanwhile, arranging a clamping structure on the outer surface of the die frame to ensure that other components placed when the die frame is used cannot fall off;

s302, checking the manufacturing process of the die set by using a numerical control simulation machining program, and guiding the die set into a numerical control machining machine tool through a G code to manufacture the die after determining that the die set is correct;

s303, selecting aluminum metal with light weight and large bearing capacity to be placed on a numerical control machine tool for manufacturing.

By adopting the technical scheme: the die carrier balances the pressure of the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve generated by the self gravity.

The invention is further configured to: the step S4 further includes the following steps:

s401, respectively clamping or placing the laser pump body, the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve on the outer surface of the die carrier;

s402, respectively wrapping waterproof adhesive tapes at the communication positions among the laser pump body, the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve, and installing waterproof plugs at the communication positions of pipelines inside the micro water pump and the exhaust valve;

and S403, turning on a switch of the micro water pump to drive the interior of the water injection device to start to operate, and removing the waterproof plugs and the waterproof adhesive tapes one by one until the laser pump body, the bell-shaped cover, the delivery water pipe, the water injection device, the micro water pump and the exhaust valve form complete water path communication and no leakage is ensured.

By adopting the technical scheme: the laser pump body ensures the water path sealing before water is drained.

The invention is further configured to: the processing environment for starting the drainage system in the step S5 is as follows: the indoor pressure is controlled to be 101.3kPa +/-1 kPa, and the constant temperature is 25 ℃ so as to avoid the gas in the cooling water from being separated out and attached to the inner wall of the laser pumping body due to the change of the temperature and the pressure.

By adopting the technical scheme: thereby avoid the laser pumping chamber wall to adhere to the bubble through the environment of constant temperature and isopiestic pressure.

The invention is further configured to: the step S6 includes the steps of:

s601, selecting a diffuse reflection plate with white ground color and a photosensitive spraying material with a color different from that of laser;

s602, uniformly coating the photosensitive spraying material on the outer surface of the diffuse reflection plate;

s603, after the air exhaust valve stops exhausting air outwards, placing the diffuse reflection plate in front of the output end of the laser pumping body, standing for thirty seconds, and taking out for observation;

and S604, observing the color change area of the photosensitive material on the outer surface of the diffuse reflection plate to judge whether the air in the laser pump is exhausted.

By adopting the technical scheme: so that the air in the cavity of the laser pumping body is completely exhausted.

The invention is further configured to: in the step S7, the laser pumping body is kept underwater during the removal.

By adopting the technical scheme: the situation that the laser pumping body contacts the air to cause the air to enter the cavity again is avoided.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

the invention makes a bell-shaped cover with an inner wall matched with the inner wall of a laser pump reflection end, a delivery water pipe with a water injection function is arranged on the outer surface of the bell-shaped cover, then a vent valve is arranged on the top of the bell-shaped cover, a high polymer high-quality material is used for making a bearing mould frame matched with the outer surfaces of the bell-shaped cover, the delivery water pipe, a water injection device, a micro water pump and the vent valve, the mould frame is placed on a test bench, a cooling structure and an internal laser rod are started, then the bell-shaped cover is installed on the outer surface of a full-reflection mirror of a cavity mirror, the bell-shaped cover is clamped on the outer surface of the mould frame, the delivery water pipe is wound on a support rod of the mould frame, the water injection device is placed on the top of the mould frame, the vent valve is installed on the outer surface of the mould frame, then the micro water pump is started to drive the stored water in the water injection device to enter the inner wall of the bell-shaped cover along the inner wall of the laser pump body to form a complete closed water path, after carrying out the circulating water many times, the inside air in water route passes through discharge valve function discharge, then through observing whether the cooling water has the condition of shake or deflection in the laser that launches when passing the inner wall of laser pumping body at a high speed, thereby judge whether inside still has the air, the surface through the laser pumping body after the inspection can be followed the die carrier at last and is pulled down and use, reached and completely isolated to laser pumping body intracavity air, strengthen the reflection effect of chamber mirror output mirror and chamber mirror total reflection mirror, shine the better purpose of effect under the condition that power equals.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

A method for forcibly exhausting an air water path in a laser pumping cavity comprises the following steps:

s1, manufacturing a drainage sealing cylinder: firstly, a bell-shaped cover with an inner wall matched with the inner wall of a reflection end of a laser pump is manufactured, a delivery water pipe communicated with the interior of the laser pump is arranged on the outer surface of the bell-shaped cover, and a water injection device is arranged on the outer surface of the delivery water pipe;

1) firstly, using three-dimensional drawing software to make the pattern of the bell-shaped cover, carrying out numerical control simulation machining, using a post processor to produce a G code, and introducing the G code into the numerical control machining machine tool to carry out production and manufacture;

2) selecting a proper material, and placing the material on a numerical control machine tool, wherein the material is selected from one of WCB carbon steel and LCB low-temperature carbon steel;

3) after the processing is finished, cleaning with a cleaning solution, drying after cleaning, and then detecting whether the standard is reached or not, wherein the precision is controlled within 0.01 mm;

4) after the bell-shaped cover is manufactured, a stainless steel three-way metal hose is communicated with the outer surface of the bell-shaped cover to be used as a conveying water pipe, and a water injection device is arranged in one more passage;

s2, manufacturing of a circulating water path: an exhaust valve is arranged at the top of the bell-shaped cover, the output end of the exhaust valve faces upwards, and a micro water pump is connected in the water injection device in a transmission mode;

in step S2, the method further includes:

s201, arranging an installation bin with a sealing cover plate on the outer surface of a water injection device;

s202, selecting a micro water pump with the model matched with the inner wall of the installation bin and placing the micro water pump in the micro water pump;

s203, the output end of the micro water pump is in transmission connection with the input end of a water storage structure in the water injection device and is buckled with a sealing cover plate at the top of the mounting bin;

s3, manufacturing a die carrier: manufacturing a bearing die frame matched with the outer surfaces of the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve by using a high-molecular high-quality material;

in step S3, the method further includes:

s301, using SOLIDWORKS software to perform stress analysis on the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve which are manufactured in the steps S1 and S2, analyzing multi-angle gravity which needs to be borne by the die frame when the die frame is used, and meanwhile, arranging a clamping structure on the outer surface of the die frame to ensure that other components placed when the die frame is used cannot fall off;

s302, checking the manufacturing process of the die set by using a numerical control simulation machining program, and guiding the die set into a numerical control machining machine tool through a G code to manufacture the die after determining that the die set is correct;

s303, selecting aluminum metal with light weight and large bearing capacity to be placed on a numerical control machine tool for manufacturing;

s4, installing a drainage structure: placing a mould base on a test bench, clamping a laser pumping body at the center of the mould base body, opening a cooling structure and an internal laser rod, then installing a bell jar on the outer surface of a full-reflection mirror of a cavity mirror, clamping the bell jar on the outer surface of the mould base, winding a delivery water pipe on a support rod of the mould base, placing a water injection device at the top of the mould base, installing an exhaust valve on the outer surface of the mould base, and simultaneously communicating the input end of the exhaust valve with the top of the bell jar;

the step S4 further includes the steps of:

s401, respectively clamping or placing the laser pump body, the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve on the outer surface of the die carrier;

s402, respectively wrapping waterproof adhesive tapes at the communication positions among the laser pump body, the bell-shaped cover, the conveying water pipe, the water injection device, the micro water pump and the exhaust valve, and installing waterproof plugs at the communication positions of pipelines inside the micro water pump and the exhaust valve;

s403, turning on a switch of the micro water pump to drive the interior of the water injection device to start to operate, and removing the waterproof plugs and the waterproof adhesive tapes one by one until the laser pump body, the bell-shaped cover, the delivery water pipe, the water injection device, the micro water pump and the exhaust valve form complete water path communication and no leakage is ensured;

s5, starting a drainage structure: the method comprises the following steps that a micro water pump is started to drive stored water in a water injection device to enter the inside of a bell-shaped cover along the inner wall of a laser pumping body, then the water in the bell-shaped cover passes through a conveying water pipe and returns to the inside of the water injection device to form a complete closed water path, and after circulating water for many times, air in the water path is discharged through the operation of an exhaust valve;

the processing environment for starting the drainage system in step S5 is: the indoor pressure is controlled to be 101.3kPa +/-1 kPa, and the constant temperature is 25 ℃, so that the phenomenon that gas in the cooling water is separated out and attached to the inner wall of the laser pumping body due to the change of temperature and pressure is avoided;

s6, checking: whether air still exists inside the laser pump body is judged by observing whether the laser emitted when the cooling water passes through the inner wall of the laser pump body at a high speed shakes or deflects;

step S6 includes the following steps:

s601, selecting a diffuse reflection plate with white ground color and a photosensitive spraying material with a color different from that of laser;

s602, uniformly coating the photosensitive spraying material on the outer surface of the diffuse reflection plate;

s603, after the air exhaust valve stops exhausting air outwards, placing the diffuse reflection plate in front of the output end of the laser pumping body, standing for thirty seconds, and taking out for observation;

s604, observing the color change area of the photosensitive material on the outer surface of the diffuse reflection plate to judge whether air in the laser pump is exhausted;

s7, dismantling: the laser pump body after inspection can be detached from the outer surface of the die carrier for use;

in step S7, the laser pump body is kept underwater while being removed.

Comparative example 1

The method of this embodiment is substantially the same as the method of the embodiment provided, and the main difference is that: in the step S1, a PVC plastic hose is used as a conveying water pipe;

comparative example 2

The method of this embodiment is substantially the same as the method of the embodiment provided, and the main difference is that: in the step S2, the mounting bin is subjected to water-resisting treatment without using a sealing cover plate, and the outer surface of the mounting bin is directly wound by using a waterproof adhesive tape;

comparative example 3

This example is substantially the same as the method of example 1 provided, with the main differences being: in step S1, the precision is controlled to be out of 0.01 mm;

comparative example 4

This example is substantially the same as the method of example 1 provided, with the main differences being: in step S302, no engagement structure is added.

Performance testing

The same amount of the drainage structures manufactured by the method for forcibly exhausting the air water channel in the laser pumping cavity provided by the embodiment and the comparative examples 1 to 4 are respectively taken for service life times detection and corrosion resistance detection, and the obtained data are recorded in the following table:

a bell-shaped cover with an inner wall matched with the inner wall of a laser pump reflection end is manufactured, a transmission water pipe communicated with the inside of a laser pump is arranged on the outer surface of the bell-shaped cover, a water injection device is arranged on the outer surface of the transmission water pipe, an exhaust valve is arranged at the top of the bell-shaped cover, the output end of the exhaust valve faces upwards, a micro water pump is connected in the water injection device in a transmission mode, a bearing die set matched with the outer surfaces of the bell-shaped cover, the transmission water pipe, the water injection device, the micro water pump and the exhaust valve is manufactured by using high-molecular high-quality materials, the die set is placed on a test bench, the laser pump body is clamped at the center of the die set body, a cooling structure and an internal laser rod are started, the bell-shaped cover is installed on the outer surface of a full-reflector of a cavity mirror, and the bell-shaped cover is clamped on the outer surface of the die set to wind the transmission water pipe on a support rod of the die set, the water injection device is placed at the top of the die carrier, the exhaust valve is installed on the outer surface of the die carrier, meanwhile, the input end of the exhaust valve is communicated with the top of the bell-shaped cover, then the micro water pump is started to drive the stored water in the water injection device to enter the bell-shaped cover along the inner wall of the laser pumping body, then the water in the bell-shaped cover passes through the water conveying pipe to return to the inside of the water injection device so as to form a complete closed water path, after the water is circulated for many times, the air in the water path is exhausted through the operation of the exhaust valve, at the moment, the indoor pressure is controlled to be high or low at 101.3kPa +/-1 kPa, the constant temperature is 25 ℃, so that the phenomenon that gas in the cooling water is separated out and attached to the inner wall of the laser pumping body due to the change of the temperature and the pressure is avoided, and then whether the emitted laser shakes or deflects when the cooling water passes through the inner wall of the laser pumping body at high speed is observed, thereby judge whether inside still has the air, can follow the surface of die carrier through the laser pumping body after the inspection and pull down and use at last, reached and completely isolated to laser pumping body intracavity air, strengthen the reflection effect of chamber mirror output mirror and chamber mirror total reflection mirror, shine the better purpose of effect under the circumstances that power equals.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.