Optical fiber coupling structure and semiconductor laser
A fiber-optic coupling and fiber-optic technology, applied in the field of optical systems, can solve the problems of inability to apply a single high-power semiconductor laser, complex method of fiber combiner, and high cost
Inactive Publication Date: 2020-10-23
深圳活力激光技术有限公司
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Problems solved by technology
The disadvantage of this patent is that it is only suitable for combining multiple low-power lasers into a high-power laser, and cannot be applied to a single high-power semiconductor laser, and the method of manufacturing an optical fiber combiner is complicated and costly
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[0039] In order to make the purpose, technical solution and effect of the present application more clear and definite, the present application will be further described in detail below with reference to the accompanying drawings and examples.
[0040] The application will be described in further detail below in conjunction with the accompanying drawings and embodiments. In particular, the following examples are only used to illustrate the present application, but not to limit the scope of the present application. Likewise, the following embodiments are only some of the embodiments of the present application but not all of them, and all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.
[0041] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and not nece...
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The invention discloses an optical fiber coupling structure and a semiconductor laser. The optical fiber coupling structure comprises a light guide element, a condensation element, and an optical fiber which are sequentially arranged, wherein the light guide element has a first end face and a second end face and is used for guiding a laser beam to enter from the first end face and exit from the second end face, and the first end face is larger than the cross section of the laser beam; the condensation element is used for converging the laser beams penetrating through the light guide element and then emitting the laser beam into the optical fiber; in addition, a first diaphragm and a second diaphragm are arranged on a laser beam transmission path so as to filter stray light. By means of themode, the tolerance of the coupling process can be improved, meanwhile, power losses caused when the position and / or the angle of the laser beam P slightly change are / is avoided, and the stability ofthe overall output power of the semiconductor laser is guaranteed. In addition, the transmission distance of the laser beam in the free space is reduced through the light guide element, and the coupling loss can be reduced while the quality of the laser beam is not reduced.
Description
technical field [0001] The invention relates to the technical field of optical systems, in particular to an optical fiber coupling structure and a semiconductor laser. Background technique [0002] Semiconductor lasers have a wide range of applications, and the market demand is getting higher and higher. Among them, high-power semiconductor lasers are mainly used in laser welding, cutting and other fields. The power of high-power semiconductor lasers can reach hundreds of watts, thousands of watts, or even tens of thousands of watts. The laser beam is emitted by dozens of discrete laser chips. After optical integration operations such as beam collimation and beam shaping, it is coupled to the optical fiber. . [0003] The optical fiber that receives the laser light is very thin, usually on the order of hundreds of microns. This causes the laser beam to easily deviate from the fiber core, resulting in unstable output power and even burning the peripheral components of the ...
Claims
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Login to View More IPC IPC(8): G02B6/42G02B6/32H01S5/00
CPCG02B6/32G02B6/4206G02B6/4296H01S5/005
Inventor 刘佳敏蔡万绍孙帅
Owner 深圳活力激光技术有限公司