Beam cleanup of a multimode fiber seeded by an off-center single-mode laser source

被引：5

作者：

Li, Jie ^{[1
]}

Zhao, Hai-Chuan ^{[1
]}

Chen, Zi-Lun ^{[1
]}

Xu, Xiao-Jun ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

OPTIK | 2013年 / 124卷 / 16期

基金：

中国国家自然科学基金;

关键词：

Multimode fiber laser; Spatial light modulators; Beam cleanup; Off-center single mode laser;

D O I：

10.1016/j.ijleo.2012.08.031

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the beam cleanup of a multimode (MM) fiber with different output energy pattern following injection from a single-mode fiber laser source. The experimental research is based on a stochastic parallel gradient descent (SPGD) algorithm. The output beam intensity profile from the MM fiber varies via the change of the offset when the input single mode fiber spliced to the MM fiber. This is a consequence of diverse high-order modes excited in the MM fiber where the off-center single mode laser inject into. The experiment system is setup by using phase only liquid crystal spatial light modulators (LC-SLM). It is shown that the beam cleanup of the multimode fiber is depressed when the offset are relative large. (C) 2012 Elsevier GmbH. All rights reserved.

引用

页码：2501 / 2503

页数：3

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