Multimode fiber laser beam cleanup based on stochastic parallel gradient descent algorithm

被引：7

作者：

Zhao, Hai-Chuan ^{[1
]}

Ma, Hao-Tong ^{[1
]}

Zhou, Pu ^{[1
]}

Wang, Xiao-Lin ^{[1
]}

Ma, Yan-Xing ^{[1
]}

Li, Xiao ^{[1
]}

Xu, Xiao-Jun ^{[1
]}

Zhao, Yi-Jun ^{[1
]}

机构：

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

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 02期

关键词：

Multimode fiber laser; Spatial light modulators; Beam cleanup; Stochastic parallel gradient descent; WAVE-FRONT CORRECTION; DEFORMABLE MIRROR; AMPLIFIERS;

D O I：

10.1016/j.optcom.2010.09.039

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present experimental research on multimode fiber laser beam cleanup based on a stochastic parallel gradient descent (SPGD) algorithm. The multimode laser is obtained by injecting a 1064 nm central wavelength single mode fiber laser into a multimode fiber and the system is setup by using phase only liquid crystal spatial light modulators (LC-SLM). The quality evaluation function is increased by a factor of 10.5 and 65% of the laser energy is encircled in the central lobe when the system evolves from open-loop into close-loop state. Experimental results indicate the feasibility of the multimode fiber laser beam cleanup by adaptive optics (AO). (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：613 / 615

页数：3

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