Optimization for coherent combined vortex fiber array with phase correction

Guangwei Qin; Tao Yu; Qiao Xie

doi:10.1117/12.2682530

20 June 2023 Optimization for coherent combined vortex fiber array with phase correction

Guangwei Qin, Tao Yu, Qiao Xie

Proceedings Volume 12715, Eighth International Conference on Electronic Technology and Information Science (ICETIS 2023); 127150Y (2023) https://doi.org/10.1117/12.2682530
Event: Eighth International Conference on Electronic Technology and Information Science (ICETIS 2023), 2023, Dalian, China

Abstract

The main factors limiting the long-distance application of vortex beam are the low receiving power and the wavefront phase distortion caused by atmosphere turbulence. Coherent beam combining (CBC) technology is an effective way to generating high power vortex beams. However, most common coherent combined vortex (CCV) fiber array is currently based on a single-ring structure with limited output power enhancement. In this paper, a dual-ring fiber array is developed to achieve higher output power and improved stochastic-parallel-gradient-descent (SPGD) correction accuracy. To improve SPGD correction speed, cross-grouping method is used. The results show that CCV beam in dual-ring structure can maintain good intensity distribution and mode distribution after SPGD correction.

Citation Download Citation

Guangwei Qin, Tao Yu, and Qiao Xie "Optimization for coherent combined vortex fiber array with phase correction", Proc. SPIE 12715, Eighth International Conference on Electronic Technology and Information Science (ICETIS 2023), 127150Y (20 June 2023); https://doi.org/10.1117/12.2682530

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