Influence of optical nonlinearity on combining efficiency in ultrashort pulse fiber laser coherent combining system

被引：1
|
作者：
朱云晨 [1 ]
李平雪 [1 ]
姚传飞 [1 ]
李春勇 [2 ]
熊文豪 [1 ]
李舜 [1 ]
机构：
[1] Institute of Ultrashort Pulsed Laser and Application, Faculty of Materials and Manufacturing, Beijing University of Technology
[2] Department of Physics, Durham University
来源：
Chinese Physics B | 2022年 / 31卷 / 06期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
D O I：
暂无
中图分类号：
TN248 [激光器]; O437 [非线性光学（强光与物质的作用）];
学科分类号：
摘要：
The influence of optical nonlinearity on combining efficiency in ultrashort pulse fiber laser coherent combining system is investigated theoretically and experimentally. In the theoretical work, a new theoretical algorithm is presented for the coherent combining efficiency, which can be used to quantify the spectral coherence decay induced by optical nonlinearity imbalance between the sub-beams. The spectral information of the sub-beam is obtained by numerically solving the nonlinear Schro¨dinger equation(NLSE) in this algorithm to ensure an accurate prediction. In the experimental work, the coherent combining of two all-fiber picosecond lasers is achieved, and the influence of imbalanced optical nonlinearity on the combining efficiency is studied, which agrees with the theoretical prediction. This paper reveals the physical mechanism for the influence of optical nonlinearity on the combining efficiency, which is valuable for the coherent combining of ultrashort pulse fiber laser beams.
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收藏
页码：399 / 405
页数：7
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