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Realization of 7-channel beam coherent beam combination based on coherent fiber-optics-array collimator
Author(s): Mingqian Zhang; Yanxing Ma; Jinhu Long; Pengfei Ma; Rongtao Su; Jian Wu; Pu Zhou; Lei Si
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Paper Abstract

We proposed a design of coherent fiber-optics-array collimator (CFAC) which is mainly composed of a single unitary collimating lens and prism. The CFAC system can be regarded as a “sub-aperture” of the whole fibers array in the tiledaperture scheme to expand combining channels efficiently due to its simple and compact structure. Then, we setup an experiment to verify the feasibility of the CFAC system with seven fiber lasers arranged in two dimensions and the CBC in 1064nm wavelength using single-frequency dithering algorithm is successfully achieved. By careful calculation, the residual errors among the laser beams are suppressed below λ/20 through an active-piston-phase control.

Paper Details

Date Published: 18 December 2019
PDF: 5 pages
Proc. SPIE 11333, AOPC 2019: Advanced Laser Materials and Laser Technology, 113330J (18 December 2019); doi: 10.1117/12.2542610
Show Author Affiliations
Mingqian Zhang, National Univ. of Defense Technology (China)
Yanxing Ma, National Univ. of Defense Technology (China)
Jinhu Long, National Univ. of Defense Technology (China)
Pengfei Ma, National Univ. of Defense Technology (China)
Rongtao Su, National Univ. of Defense Technology (China)
Jian Wu, National Univ. of Defense Technology (China)
Pu Zhou, National Univ. of Defense Technology (China)
Lei Si, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 11333:
AOPC 2019: Advanced Laser Materials and Laser Technology
Pu Zhou; Jian Zhang; Wenxue Li; Shibin Jiang; Takunori Taira, Editor(s)

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