A method and system for selecting a laser pump source

Abstract

The application provides a selection method and a selection system of a laser pump source, and relates to the technical field of lasers. The selection method of the laser pump source can include providing a test platform; connecting the pump sources with different coating layers in a preset order to the fusion points of the optical platform in sequence. The optical power output by the optical platform after fusing the pump sources and / or the temperature at the fusion points in the optical platform are obtained. The target pump source is obtained according to the optical power or the temperature. The selection method can solve the problems of light leakage and hot spots at the fusion points caused by the coating layer of the pump source in the fiber laser, and improve the performance and stability of the fiber laser. The selection method is simple, easy to operate and implement, has high reliability, is low in cost, and is easy to popularize and apply.

Description

Technical Field

[0001] This invention relates to the field of laser technology, and in particular to a method and system for selecting a laser pump source. Background Technology

[0002] Fiber lasers are devices that convert light energy into laser energy, widely used in materials processing, communications, and medical fields. The core component of a fiber laser is the pump source, which converts electrical energy into light energy to power the laser. The selection and optimization of the pump source are crucial to the performance and safety of fiber lasers. Optical coatings are materials applied to the surface of optical elements to increase their optical properties such as transmittance and reflectivity. In fiber lasers, optical coatings reduce light reflection and scattering, improving light energy utilization efficiency. Laser pumping technology is a technique that uses a laser to raise the energy of low-energy atoms or molecules to a higher energy level, thereby generating laser radiation. Laser pumping technology is one of the important technologies in fiber lasers, directly affecting the performance and stability of the laser.

[0003] Typically, pump source light in fiber lasers is transmitted within the cladding of the pump source fiber. However, variations in the manufacturing process or batches of pump source fibers can affect the transmission of this light within the cladding. This results in some pump source light leaking into the fiber coating. When this leakage occurs in the fiber laser's optical path, it can cause problems such as light leakage and hot spots at the fiber splice, severely impacting the fiber laser's safety and reliability. Existing methods cannot accurately assess the highest optical power of the pump source coating that the optical platform can withstand, limiting the performance and stability of fiber lasers. Summary of the Invention

[0004] One objective of the first aspect of the present invention is to provide a method for selecting a laser pump source that solves the problem in the prior art that the optical power of the coating of the highest pump source that the optical platform can withstand cannot be accurately assessed, thus limiting the performance and stability of fiber lasers.

[0005] Another objective of the first aspect of the present invention is to address the problem that the optical power of the coating layer of the pump source cannot be accurately measured in the prior art, which makes it impossible to accurately assess the impact of the pump source on the performance and safety of fiber lasers.

[0006] A second aspect of the present invention is to provide a laser pump source selection system.

[0007] In particular, the present invention also provides a method for selecting a laser pump source, comprising:

[0008] A testing platform is provided; wherein the testing platform includes an optical platform, and the optical platform includes at least one fusion splice.

[0009] Pump sources with coatings of different optical powers are sequentially connected to the fusion point of the optical platform in a preset order; wherein, the preset order is in order of increasing optical power of the coatings;

[0010] Obtain the optical power output of the optical platform to which the pump source is fused and / or the temperature at the fusion point in the optical platform;

[0011] The target pump source is obtained based on the optical power or the temperature.

[0012] Optionally, before sequentially connecting the pump sources with coatings of different optical powers to the fusion point of the optical platform in a preset order, the method further includes:

[0013] Obtain the optical power of the coating layer with different pump sources.

[0014] Optionally, obtaining the optical power of the coatings from different pump sources includes:

[0015] The first optical power output when the coating of the pump source does not leak light;

[0016] The second optical power output when the coating of the pump source leaks light;

[0017] The optical power of the coating layer of the pump source is obtained by subtracting the second optical power from the first optical power.

[0018] Optionally, the step of obtaining the first optical power output when the coating of the pump source does not leak light includes:

[0019] The pump source is fused to the optical fiber patch cord;

[0020] A first preset refractive index adhesive is applied to the welding position; wherein the first preset refractive index is the same as or less than the refractive index of the coating layer;

[0021] The optical power output by the pump source through the optical fiber patch cord is the first optical power.

[0022] Optionally, the step of obtaining the second optical power output when the coating of the pump source leaks light includes:

[0023] The pump source is fused to the optical fiber patch cord;

[0024] A second preset refractive index adhesive is applied to the weld joint; wherein the second preset refractive index is greater than the refractive index of the coating layer;

[0025] The optical power output by the pump source through the optical fiber patch cord is the second optical power.

[0026] Optionally, the value of the second preset refractive index minus the refractive index of the coating layer is greater than or equal to 1.

[0027] Optionally, after obtaining the optical power output by the optical platform with the pump source fused and / or the temperature at the fusion point in the optical platform, the method further includes:

[0028] Determine whether the optical power is less than a preset optical power; wherein, the preset optical power is the lower limit of the power allowed by the optical platform;

[0029] If so, the pump source connected to the optical platform is the target pump source, and the next pump source is connected to the optical platform for optical power detection until the optical power of the pump source is greater than the preset optical power.

[0030] If not, then stop connecting the pump source to the optical platform.

[0031] Optionally, after obtaining the optical power output by the optical platform with the pump source fused and / or the temperature at the fusion point in the optical platform, the method further includes:

[0032] Determine whether the temperature is greater than a preset temperature; wherein, the preset temperature is the upper limit of the welding point temperature;

[0033] If so, then stop connecting the pump source to the optical platform, wherein the pump source with a temperature less than or equal to the preset temperature is the target pump source;

[0034] If not, the next pump source is connected to the optical platform until the temperature of the pump source is greater than the preset temperature.

[0035] In particular, the present invention also provides a laser pump source selection system for obtaining the target pump source according to the laser pump source selection method described above;

[0036] The laser pump source selection system includes:

[0037] The test platform includes a power supply unit, an optical platform, and a testing device; the power supply unit is used to provide power to the pump source, the optical platform, and the testing device.

[0038] A fusion module is used to fuse the pump source to the optical platform;

[0039] The data acquisition module is used to acquire the optical power output from the optical platform of the pump source and / or the temperature at the fusion point in the optical platform, as detected by the detection device; and

[0040] The data processing module is used to obtain the target pump source based on the temperature and / or optical power obtained by the data acquisition module.

[0041] Optionally, the test platform also includes fiber optic patch cords;

[0042] The fusion splicing module is also used to fusion splice the pump source to the optical fiber patch cord, and to apply adhesive with a preset refractive index to the fusion splice.

[0043] The data acquisition module is also used to acquire the optical power output by the pump source from the optical fiber patch cord after the pump source and the optical fiber patch cord are fused together and glue with different refractive indices is applied at the fusion joint, as detected by the detection device.

[0044] The data processing module is also used to obtain the optical power of the coating layer of the pump source based on the optical power output by the optical fiber patch cord after applying adhesives with different refractive indices at the weld joint.

[0045] In this scheme, the laser pump source selection method involves fusion splicing the pump source to the optical platform. By measuring the leakage light, hot spot temperature, and output power at the fiber splice point in the optical platform, the highest optical power that the optical platform can withstand from the pump source coating is determined. Based on this, the pump source for the fiber laser is selected to address issues such as leakage light and hot spots at the splice point caused by the pump source coating, thereby improving the performance and stability of the fiber laser. This laser pump source selection method is relatively simple, easy to operate and implement, and highly reliable. Furthermore, this method has strong compatibility and can adapt to different types of pump sources and optical platforms. In addition, due to the simplicity of the selection method, the cost is low, making it easy to promote and apply.

[0046] In this approach, by acquiring the optical power of coatings from different pump sources, a suitable pump source with a suitable coating can be selected. This ensures that the chosen pump source is perfectly matched with the optical system, thereby maximizing the performance of the fiber laser and ensuring its stable operation. Furthermore, this process provides a solid foundation for subsequent pump source selection.

[0047] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0048] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0049] Figure 1 This is a schematic flowchart of a laser pump source selection method according to a specific embodiment of the present invention;

[0050] Figure 2 This is a schematic flowchart of a laser pump source selection method according to another specific embodiment of the present invention;

[0051] Figure 3 This is a schematic flowchart illustrating the acquisition of optical power of coatings from different pump sources according to another specific embodiment of the present invention;

[0052] Figure 4 This is a schematic flowchart illustrating the first optical power output when the coating of the pump source does not leak light, according to another specific embodiment of the present invention;

[0053] Figure 5 This is a schematic flowchart illustrating the second optical power output when light leakage occurs in the coating layer of the pump source according to another specific embodiment of the present invention;

[0054] Figure 6 This is a schematic flowchart of a laser pump source selection method according to yet another specific embodiment of the present invention;

[0055] Figure 7 This is a schematic flowchart of a laser pump source selection method according to yet another specific embodiment of the present invention;

[0056] Figure 8 This is a schematic structural block diagram of a laser pump source selection system according to a specific embodiment of the present invention;

[0057] Figure 9 This is a schematic structural block diagram of a test platform according to a specific embodiment of the present invention;

[0058] Figure 10 This is a schematic structural block diagram of a test platform according to a specific embodiment of the present invention.

[0059] Explanation of reference numerals in the attached figures:

[0060] Laser pump source selection system-100; Pump source-200; Test platform-110; Power supply device-111, Optical platform-112; Testing equipment-113; Fiber optic patch cord-114; Adhesive-115; Fusion splicing module-120; Data acquisition module-130; Data processing module-140. Detailed Implementation

[0061] In the description of this embodiment, it should be understood that the terms "length", "width", "height", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0062] As a specific embodiment of the present invention, such as Figure 1 As shown, this embodiment provides a method for selecting a laser pump source. This selection method may include:

[0063] Step S100: A test platform is provided; wherein the test platform includes an optical platform, and the optical platform includes at least one fusion splice.

[0064] Step S200: Pump sources with coatings having different optical powers are connected to the fusion point of the optical platform in a preset order; wherein, the preset order is in order of increasing optical power of the coatings.

[0065] Step S300: Obtain the optical power output of the optical platform with the pump source fused and / or the temperature at the fusion point in the optical platform;

[0066] Step S400: Obtain the target pump source based on optical power or temperature.

[0067] In this embodiment, the laser pump source selection method involves fusing the pump source with the optical platform. By measuring the light leakage at the fiber optic splice, the splice temperature at hot spots, and the output power, the highest optical power that the optical platform can withstand from the pump source coating is determined. Based on this, the pump source for the fiber laser is selected to address issues such as light leakage and hot spots at the splice caused by the pump source coating, thereby improving the performance and stability of the fiber laser. This embodiment's laser pump source selection method is relatively simple, easy to operate and implement, and highly reliable. Furthermore, the system in this embodiment has strong compatibility and can adapt to different types of pump sources and optical platforms. In addition, because the selection method in this embodiment is relatively simple, the cost is low, making it easy to promote and apply.

[0068] As a specific embodiment of the present invention, step S200 of this embodiment, before sequentially connecting the pump sources with coatings of different optical powers to the fusion point of the optical platform in a preset order, may further include:

[0069] Step S500: Obtain the optical power of the coating layer for different pump sources.

[0070] In this embodiment, after successfully obtaining the target pump source, for fiber lasers with the same optical path scheme, the highest optical power of the pump source coating that the optical system can withstand becomes a fixed value. In this case, subsequent pump source selection only requires testing the optical power of the pump source coating. In this embodiment, by obtaining the optical power of different pump source coatings, on the one hand, a suitable pump source with a suitable coating can be selected, ensuring that the selected pump source can perfectly match the optical system, thereby maximizing the performance of the fiber laser and ensuring its stable operation. On the other hand, this process also provides a solid foundation for subsequent pump source selection. By accumulating data on the optical power of different pump source coatings, a pump source database can be established. In the future, when facing similar fiber laser optical path schemes, the most suitable pump source can be selected more quickly and accurately, improving work efficiency, reducing selection costs, and providing valuable reference for the research and optimization of fiber lasers.

[0071] As a specific embodiment of the present invention, such as Figure 2 As shown, step S500 of this embodiment, obtaining the optical power of the coating layer for different pump sources, may include:

[0072] Step S510: Obtain the first optical power output when the coating of the pump source does not leak light;

[0073] Step S520: Obtain the second optical power output when the coating of the pump source leaks light;

[0074] Step S530: The optical power of the pump source coating is obtained by subtracting the second optical power from the first optical power.

[0075] Specifically, in this embodiment, the optical power of the coating layer of the pump source can be obtained first when there is no light leakage and when there is light leakage, and then the optical power of the coating layer of the pump source can be obtained through the optical power of the coating layer when there is no light leakage and when there is light leakage.

[0076] As a specific embodiment of the present invention, such as Figure 3 As shown, step S510 of this embodiment, the step of obtaining the first optical power output when the coating layer of the pump source does not leak light, may include:

[0077] Step S511: Fusion splice the pump source to the fiber optic patch cord;

[0078] Step S512: Apply adhesive with a first preset refractive index to the welding position; wherein the first preset refractive index is the same as or less than the refractive index of the coating layer;

[0079] Step S513: The optical power output by the pump source through the fiber optic patch cord is the first optical power.

[0080] Specifically, in this embodiment, an adhesive with a first refractive index is applied to the fusion splice between the pump source and the fiber optic patch cord. When the first refractive index is less than or equal to the refractive index of the coating layer, the coating layer exhibits almost no leakage, and it can be considered that there is no light leakage from the coating layer. In this case, the optical power output from the pump source through the fiber optic patch cord can be detected to obtain the first optical power output when the light from the pump source's coating layer does not leak. For example, as an embodiment, an adhesive with a refractive index of 1.37 is applied to the fusion splice between the pump source and the fiber optic patch cord. This refractive index of 1.37 is also the refractive index of the pump source's coating layer. Since the refractive index of this adhesive is the same as that of the coating layer and is relatively low, very little light from the coating layer in the pump source leaks through the fusion splice. The optical power output from the pump source through the fiber optic patch cord obtained in this case can be considered the optical power of the pump source without light leakage.

[0081] As a specific embodiment of the present invention, such as Figure 4 As shown, step S520 of this embodiment, the step of obtaining the second optical power output when the coating layer of the pump source leaks light, includes:

[0082] Step S521: Fusion splice the pump source to the fiber optic patch cord;

[0083] Step S522: Apply adhesive with a second preset refractive index to the welding position; wherein the second preset refractive index is greater than the refractive index of the coating layer;

[0084] Step S523: The optical power output by the pump source through the fiber optic patch cord is the second optical power.

[0085] Specifically, in this embodiment, an adhesive with a second preset refractive index is applied to the fusion joint between the pump source and the fiber optic patch cord. When the second preset refractive index is greater than the refractive index of the coating layer, light will leak from the coating layer. The higher the refractive index of the adhesive, the more light will leak. The optical power output by the pump source through the fiber optic patch cord at this time can be considered as the optical power leaked from the pump source.

[0086] As a specific embodiment of the present invention, the value of the second preset refractive index minus the refractive index of the coating layer is greater than or equal to 1.

[0087] Generally, when the difference between the second preset refractive index and the refractive index of the coating layer is greater than or equal to 1, it can be considered that the light from the pump source completely leaks through the adhesive location. The optical power of the pump source obtained at this time can be considered as the optical power when the light from the pump source completely leaks.

[0088] For example, in one embodiment, an adhesive with a refractive index of 1.47 is applied to the splice between the pump source and the fiber optic patch cord. This adhesive has a refractive index greater than that of the coating layer on the pump source, and the difference is 1. Therefore, light from the coating layer on the pump source leaks through the splice between the pump source and the fiber optic strip. The optical power output from the pump source through the fiber optic patch cord at this time can be considered as the optical power leaked from the pump source.

[0089] As a specific embodiment of the present invention, such as Figure 5 As shown, in this embodiment, after obtaining the optical power output by the optical platform with the pump source fused and / or the temperature at the fusion point in the optical platform, step S300 further includes:

[0090] Step S600: Determine whether the optical power is less than the preset optical power; where the preset optical power is the lower limit of the power allowed by the optical platform. If yes, proceed to step S700; otherwise, proceed to step S800.

[0091] In step S700, the pump source connected to the optical platform is the target pump source, and steps S200, S300, and S600 are repeated until the optical power of the pump source connected to the optical platform is greater than the preset optical power. At this point, any pump source with an optical power less than the preset optical power is considered a target pump source.

[0092] Step S800: Stop the pump source from connecting to the optical platform.

[0093] Specifically, in this embodiment, the target pump source can be obtained by measuring the optical power output of the pump source connected to the optical platform. Since the pump sources in this embodiment are connected to the optical platform sequentially in ascending order of optical power, if the optical power of one pump source is less than a preset optical power, it can continue to be connected to the optical platform sequentially, and the optical power of each connected pump source can be checked against the preset optical power until the optical power of the connected pump source is not less than the preset optical power. At this point, the pump source represents the highest optical power of the coating layer that the optical platform can withstand. Therefore, the pump source with a coating layer optical power not exceeding the preset optical power is a usable pump source and is the target pump source. Specifically, pump sources with optical power at or below this level can be connected to the optical platform for use.

[0094] As another specific embodiment of the present invention, such as Figure 6 As shown, in this embodiment, after obtaining the optical power output by the optical platform with the pump source fused and / or the temperature at the fusion point in the optical platform, step S300 further includes:

[0095] Step S900: Determine whether the temperature is greater than the preset temperature; where the preset temperature is the upper limit of the welding point temperature. If yes, proceed to step S110; otherwise, proceed to step S120, and repeat steps S300 and S900 until the target pump source is obtained.

[0096] Step S110: The pump source preceding the pump source connected to the optical platform is the target pump source.

[0097] In step S120, the next pump source is connected to the optical platform, and step S300 is repeated until the temperature at the fusion point of the pump source connected to the optical platform is greater than the preset temperature.

[0098] Specifically, in this embodiment, the temperature at the fusion point where the pump source is connected to the optical platform is determined. When the temperature at the fusion point on the optical platform exceeds the upper limit of the fusion point temperature, the pump source at this point represents the highest temperature that the fusion point on the optical platform can withstand. Since the pump sources in this embodiment are connected to the optical platform in a specific order, continuing to connect them would result in excessively high temperatures, potentially damaging the instrument. Therefore, all pump sources whose temperatures are below this upper limit can be connected to the optical platform.

[0099] As a specific embodiment of the present invention, such as Figure 7 and Figure 8 As shown, this embodiment also provides a laser pump source selection system 100, which can be used to obtain a target pump source according to the laser pump source selection method described above. The laser pump source selection system 100 may include a test platform 110, a fusion splicing module 120, a data acquisition module 130, and a data processing module 140. The test platform 110 may include a power supply device 111, an optical platform 112, and a detection device 113. The power supply device 111 provides power to the pump source 200, the optical platform 112, and the detection device 113. The fusion splicing module 120 fuses the pump source 200 to the optical platform 112. The data acquisition module 130 acquires the optical power output from the optical platform 112 of the pump source 200 and / or the temperature at the fusion point in the optical platform 112, as detected by the detection device 113. The data processing module 140 obtains the target pump source based on the temperature and / or optical power obtained by the data acquisition module 130.

[0100] Specifically, the laser pump source selection system 100 of this embodiment may include a test platform 110, a fusion splicing module 120, a data acquisition module 130, and a data processing module 140. The test platform 110 may include a power supply device 111, an optical platform 112, and a detection device 113. Specifically, the detection device 113 of this embodiment may include a power meter 1131 and a thermometer 1132. The laser pump source selection system 100 can select a suitable laser pump source 200 for the optical platform 112 to solve problems such as light leakage and hot spots at the fusion splice caused by the light from the coating layer of the pump source 200 in fiber lasers, thereby improving the performance and stability of fiber lasers. The selection system 100 of this embodiment has strong compatibility and can adapt to different types of pump sources 200 and optical platforms 112.

[0101] The highest optical power of the pump source 200 coating layer that the optical platform 112 can withstand is obtained through the selection system 100 of the laser pump source 200. Subsequently, only the optical power of the pump source 200 coating layer needs to be tested to select the pump source 200.

[0102] As a specific embodiment of the present invention, such as Figure 9 As shown, the test platform 110 in this embodiment may further include an optical fiber patch cord 114. The fusion splicing module 120 is further configured to fusion splice the pump source 200 to the optical fiber patch cord 114 and apply adhesive 115 with a preset refractive index to the splice joint. The data acquisition module 130 is further configured to acquire the optical power output by the pump source 200 from the optical fiber patch cord 114 after the pump source 200 and the optical fiber patch cord 114 are fused and adhesive 115 with different refractive indices is applied to the splice joint, as detected by the detection device. The data processing module 140 is further configured to obtain the optical power of the coating layer of the pump source 200 based on the optical power output by the pump source 200 from the optical fiber patch cord 114 after applying adhesive with different refractive indices to the splice joint.

[0103] Specifically, in this embodiment, the optical power of the coating layer of the pump source 200 can also be obtained by using the test platform 110, and then the pump source 200 of the coating layer applicable to the test platform 110 can be obtained by using the optical power of different pump sources 200.

[0104] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A method for selecting a laser pump source, characterized in that, include: A testing platform is provided; wherein the testing platform includes an optical platform, and the optical platform includes at least one fusion splice. Pump sources with coatings of different optical powers are sequentially connected to the fusion point of the optical platform in a preset order; wherein, the preset order is in order of increasing optical power of the coatings; Obtain the optical power output of the optical platform to which the pump source is fused and / or the temperature at the fusion point in the optical platform; The target pump source is obtained based on the optical power or the temperature.

2. The method for selecting a laser pump source according to claim 1, characterized in that, Before the pump sources with coatings of different optical powers are sequentially connected to the fusion point of the optical platform in a preset order, the following steps are also included: Obtain the optical power of the coating layer with different pump sources.

3. The method for selecting a laser pump source according to claim 2, characterized in that, The optical power of the coatings obtained from different pump sources includes: The first optical power output when the coating of the pump source does not leak light; The second optical power output when the coating of the pump source leaks light; The optical power of the coating layer of the pump source is obtained by subtracting the second optical power from the first optical power.

4. The method for selecting a laser pump source according to claim 3, characterized in that, The steps for obtaining the first optical power output when the coating of the pump source does not leak light include: The pump source is fused to the fiber optic patch cord; A first preset refractive index adhesive is applied to the welding position; wherein the first preset refractive index is the same as or less than the refractive index of the coating layer; The optical power output by the pump source through the optical fiber patch cord is the first optical power.

5. The method for selecting a laser pump source according to claim 3, characterized in that, The steps for obtaining the second optical power output when the coating of the pump source leaks light include: The pump source is fused to the fiber optic patch cord; A second preset refractive index adhesive is applied to the weld joint; wherein the second preset refractive index is greater than the refractive index of the coating layer; The optical power output by the pump source through the optical fiber patch cord is the second optical power.

6. The method for selecting a laser pump source according to claim 5, characterized in that, The value of the second preset refractive index minus the refractive index of the coating layer is greater than or equal to 1.

7. The method for selecting a laser pump source according to claim 1, characterized in that, After obtaining the optical power output from the optical platform with the pump source fused and / or the temperature at the fusion point in the optical platform, the method further includes: Determine whether the optical power is less than a preset optical power; wherein, the preset optical power is the lower limit of the power allowed by the optical platform; If so, the pump source connected to the optical platform is the target pump source, and the next pump source is connected to the optical platform for optical power detection until the optical power of the pump source is greater than the preset optical power. If not, then stop connecting the pump source to the optical platform.

8. The method for selecting a laser pump source according to claim 1, characterized in that, After obtaining the optical power output from the optical platform with the pump source fused and / or the temperature at the fusion point in the optical platform, the method further includes: Determine whether the temperature is greater than a preset temperature; wherein, the preset temperature is the upper limit of the welding point temperature; If so, then stop connecting the pump source to the optical platform, wherein the pump source with a temperature less than or equal to the preset temperature is the target pump source; If not, the next pump source is connected to the optical platform until the temperature of the pump source is greater than the preset temperature.

9. A laser pump source selection system, characterized in that, The method for selecting a laser pump source according to any one of claims 1-8 is used to obtain the target pump source; The laser pump source selection system includes: The test platform includes a power supply unit, an optical platform, and a testing device; the power supply unit is used to provide power to the pump source, the optical platform, and the testing device. A fusion module is used to fuse the pump source to the optical platform; The data acquisition module is used to acquire the optical power output from the optical platform of the pump source and / or the temperature at the fusion point in the optical platform, as detected by the detection device; and The data processing module is used to obtain the target pump source based on the temperature and / or optical power obtained by the data acquisition module.

10. The laser pump source selection system according to claim 9, characterized in that, The test platform also includes fiber optic patch cords; The fusion splicing module is also used to fusion splice the pump source to the optical fiber patch cord, and to apply adhesive with a preset refractive index to the fusion splice. The data acquisition module is also used to acquire the optical power output by the pump source from the optical fiber patch cord after the pump source and the optical fiber patch cord are fused together and glue with different refractive indices is applied at the fusion joint, as detected by the detection device. The data processing module is also used to obtain the optical power of the coating layer of the pump source based on the optical power output by the optical fiber patch cord after applying adhesives with different refractive indices at the weld joint.

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