Realization of 7-channel beam coherent beam combination based on coherent fiber-optics-array collimator

Mingqian Zhang; Yanxing Ma; Jinhu Long; Pengfei Ma; Rongtao Su; Jian Wu; Pu Zhou; Lei Si

doi:10.1117/12.2542610

18 December 2019 Realization of 7-channel beam coherent beam combination based on coherent fiber-optics-array collimator

Mingqian Zhang, Yanxing Ma, Jinhu Long, Pengfei Ma, Rongtao Su, Jian Wu, Pu Zhou, Lei Si

Author Affiliations +

Proceedings Volume 11333, AOPC 2019: Advanced Laser Materials and Laser Technology; 113330J (2019) https://doi.org/10.1117/12.2542610
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

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.

Citation Download Citation

Mingqian Zhang, Yanxing Ma, Jinhu Long, Pengfei Ma, Rongtao Su, Jian Wu, Pu Zhou, and Lei Si "Realization of 7-channel beam coherent beam combination based on coherent fiber-optics-array collimator", Proc. SPIE 11333, AOPC 2019: Advanced Laser Materials and Laser Technology, 113330J (18 December 2019); https://doi.org/10.1117/12.2542610

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