Fiber laser beam combining device
A technology of fiber laser and fiber bundle, which is applied to the coupling of lasers, optical waveguides, and laser components. It can solve problems such as complex structures, unsuitability for mass engineering production, and high difficulty in assembly and adjustment. It achieves low-loss beam coupling, The effect of compact structure and simple structure
Pending Publication Date: 2022-03-11
11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology
Although this method avoids direct processing of optical fibers, its structure is very complicated and difficult to assemble and adjust, so it is not suitable for mass engineering production
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[0026] In order to further explain the technical means and functions adopted by the present invention to achieve the intended purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0027] It should be noted that the terms "first" and "second" in the description and claims in the embodiments of the present invention and the above drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or priority. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein.
[0028] In related technologies, combining output of multi-beam optical fibers is one of the key technologies of current fiber laser technology, mainly including pump light combining and multi-beam signal light power combining. The ...
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Abstract
The invention discloses an optical fiber laser beam combining device which comprises an optical fiber bundle, a lens and an output optical fiber which are sequentially arranged along a laser propagation light path, the optical fiber bundle comprises a plurality of input optical fibers arranged according to a preset arrangement rule and a preset arrangement distance, and laser forms a plurality of first light beams after passing through the optical fiber bundle; the lens is provided with an input end face and an output end face, multiple first light beams are input into the lens through the input end face, and multiple second light beams are output through the output end face; and the plurality of second light beams finally enter the output optical fiber. According to the optical fiber laser beam combining device and the beam combining method based on the single lens with the gradually-changed refractive index, the structure is simple, light beam collimation and shaping and other designs are not needed, and high-efficiency coupling can be achieved through the single lens. Besides, the corresponding number of input optical fibers can be arranged in the light beams according to the number of the lasers needing beam combination, and free design of the beam combination ratio is achieved while direct processing of the optical fibers is avoided.
Description
technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a fiber laser beam combining device. Background technique [0002] In recent years, with the rapid development of fiber lasers, the research on its key components has become a key technology to further improve the performance of fiber lasers. Among them, the research on fiber laser beam combiner has become an important research topic in the field of fiber lasers. How to couple fiber laser into double clad fiber or large mode field fiber and realize high efficiency utilization of laser has become an urgent task. [0003] The fused tapered fiber combiner in the prior art includes: N light-incoming optical fibers are cut from the middle after being fused and tapered, and then fused with the outgoing optical fiber. This method directly processes the optical fiber, and the process control of the taper process is difficult, which may easily cause laser leakage. [0004] Another ...
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IPC IPC(8): G02B6/26G02B6/32H01S3/067
CPCG02B6/262G02B6/32H01S3/06708
Inventor 宋奎岩张昆张利明李尧余洋
Owner 11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP