Beam quality analysis of output laser in a conventional photonic lantern excited by incoherent sources

Xuanfeng Zhou; Defeng Zhang; Yanbin Wang; Wenjian Xiao; Rongzhen Zhu; Xinghuo Men

doi:10.1117/12.2599420

18 June 2021 Beam quality analysis of output laser in a conventional photonic lantern excited by incoherent sources

Xuanfeng Zhou, Defeng Zhang, Yanbin Wang, Wenjian Xiao, Rongzhen Zhu, Xinghuo Men

Proceedings Volume 11850, First Optics Frontier Conference; 118500L (2021) https://doi.org/10.1117/12.2599420
Event: First Optics Frontier Conference, 2021, Hangzhou, China

Abstract

The beam quality factor (M² parameter) of output laser in a three-core and seven-core conventional photonic lantern excited by incoherent sources is analyzed based on analytical and numerical method. Theoretical results show that the limitation of output laser beam quality is M²=1.75 for a three-core photonic lantern and M²=2.70 for a seven-core photonic lantern. Both the mode evolution process and beam quality factors of these two kinds of photonic lanterns are verified by numerical calculations. It is shown that good beam quality of the theoretical limitations can be realized only if the adiabatic conditions are satisfied very well. These results are very meaningful for practical application of high brightness incoherent beam combining based on conventional photonic lanterns.

Citation Download Citation

Xuanfeng Zhou, Defeng Zhang, Yanbin Wang, Wenjian Xiao, Rongzhen Zhu, and Xinghuo Men "Beam quality analysis of output laser in a conventional photonic lantern excited by incoherent sources", Proc. SPIE 11850, First Optics Frontier Conference, 118500L (18 June 2021); https://doi.org/10.1117/12.2599420

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