Principle and numerical demonstration of high power all-fiber coherent beam combination based on self-imaging effect in a square core fiber  

作　　者：Yuefang Yan Yu Liu Haoyu Zhang Yue Li Yuwei Li Xi Feng Donglin Yan Jianjun Wang Honghuan Lin Feng Jing Wenhui Huang Rumao Tao 

机构地区：[1]Laser Fusion Research Center,China Academy of Engineering Physics,Mianyang 621900,China [2]Key Laboratory of Particle&Radiation Imaging(Tsinghua University),Ministry of Education,Beijing 100084,China

出　　处：《Photonics Research》2022年第2期444-455,共12页光子学研究（英文版）

基　　金：National Key Research and Development Program of China (2017YFB1104401);National Natural Science Foundation of China (61905226)。

摘　　要：The self-imaging effect in a square core fiber has been investigated, and an integrated all-fiber combiner has been proposed based on a large mode area double clad fiber, which can be employed to construct high power coherent beam combining sources in the all-fiber format. The influence of various parameters on beam quality(M^(2)) and efficiency of the all-fiber coherent beam combiner has been studied numerically, which reveals that the near diffraction-limited laser beam can be achieved. A principle demonstration of the self-imaging effect has been carried out experimentally in a square core fiber, which proves the feasibility of beam combining with the square fiber, and that it is a promising way to develop high power coherent beam combination sources.

关 键 词：FIBER power beam 

分 类 号：TN253[电子电信—物理电子学]