外文题目: Low beam quality degradation, high-efficiency pump and signal combiner by built- in mode field adapter
作者: Liu, Kai; Zhao, Chun; Yang, Yifeng; Chen, Xiaolong; Wang, Jianhua; He, Bing; Zhou, Jun
刊名: Appl. Optics
年: 2017 卷: 56 期: 10 页： 2804--2809
英文关键词:

FIBER LASERS; COUPLER; POWER; AMPLIFIERS; TAPER
英文摘要:
A low beam quality degradation, high-efficiency (6 + 1) x 1 pump and signal combiner based on an end-pumping technique was realized by a built-in mode field adapter. A 2D simulation model to calculate the taper ratios of signal input and output fibers for matching the mode field profile in the coupling region was established. Based on the simulation results, we fabricated a combiner, achieving a signal coupling ratio of 87.52% and an average pump coupling ratio of 98.56%. The beam quality degradation caused by the signal feed-through of the combiner was theoretically determined in terms of the well-known M-2 parameter and experimentally measured to be only Delta M-2 = 0.15 (1.05 to 1.2). Theoretical results are in good agreement with the experimental results. (C) 2017 Optical Society of America


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1364/AO.56.002804


全文传递服务