Mechanism of beam cleanup by stimulated Brillouin scattering in multimode fibers

被引：13

作者：

Gao, Qilin ^{[1
]}

Lu, Zhiwei ^{[1
]}

Zhu, Chengyu ^{[1
]}

Zhang, Jianhui ^{[1
]}

机构：

[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Tunable Laser, Harbin 150001, Peoples R China

来源：

APPLIED PHYSICS EXPRESS | 2015年 / 8卷 / 05期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

WAVE PHASE-CONJUGATION; OPTICAL-FIBER; MODE; CAVITY; GAIN; LONG;

D O I：

10.7567/APEX.8.052501

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The conditions leading to the beam cleanup effect induced by stimulated Brillouin scattering (SBS) have been debated by many researchers. In this paper, we firstly reveal that the key point of the beam cleanup induced by SBS is at the selective excitation of the fundamental mode of the Stokes beam, which is amplified by the counterpropagating high-order-mode pump beam along multimode fibers while preserving the fundamental mode and subsequently realizing the beam cleanup. This mechanism is theoretically modeled and experimentally demonstrated in this work. (C) 2015 The Japan Society of Applied Physics

引用

页数：4

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