Beam shaping for kilowatt fiber-coupled diode lasers by using one-step beam cutting-rotating of prisms

作     者：Wu, Yulong Dong, Zhiyong Chen, Yongqi Qi, Yaoyao Yuan, Xiandan Qi, Yunfei Xu, Li Lin, Xuechun Zou, Yonggang Zhao, Pengfei 

作者机构：Changchun Univ Sci & Technol State Key Lab High Power Semicond Lasers Changchun 130022 Jilin Peoples R China Chinese Acad Sci Inst Semicond Lab All Solid State Light Sources Beijing 100083 Peoples R China 

出 版 物：《APPLIED OPTICS》 (Appl. Opt.)

年 卷 期：2016年第55卷第34期

页      面：9769-9773页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China, (61308032, 61308033, 61404135, 61405186) Chinese Academy of Agricultural Sciences Institute of Semiconductors, Chinese Academy of Sciences National High-tech Research and Development Program, (2014AA032607) 

主　　题：Diode laser arrays Diode lasers Fiber lasers Laser beam shaping Laser beams Laser materials processing 

摘      要：The beam quality mismatch of laser diode stacks in both axes limits many direct applications for fiber or solid laser pumping and material processing. In this paper, a one-step cutting-rotating beam shaping system has been designed to homogenize the beam quality of two polarization-multiplexing laser diode stacks. Coupling laser diode stacks consisting of eight bars into a standard fiber with a core diameter of 600 mu m and an NA of 0.22 is achieved. The simulative result shows that the system will have an output power over 1056 W. By using the technique, the production of compact and high brightness fiber-coupling diode lasers can be directly used for laser cladding and laser surface hardening processes. (C) 2016 Optical Society of America