7.1 kW coherent beam combining system based on a seven-channel fiber amplifier array

被引：76

作者：

Ma, Pengfei ^{[1
]}

Chang, Hongxiang ^{[1
]}

Ma, Yanxing ^{[1
]}

Su, Rongtao ^{[1
]}

Qi, Yunfeng ^{[2
]}

Wu, Jian ^{[1
]}

Li, Can ^{[1
]}

Long, Jinhu ^{[1
]}

Lai, Wenchang ^{[1
]}

Chang, Qi ^{[1
]}

Hou, Tianyue ^{[1
]}

Zhou, Pu ^{[1
]}

Zhou, Jun ^{[2
]}

机构：

[1] Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai Key Lab All Solid State Laser & Appl Tec, Shanghai 201800, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2021年 / 140卷

基金：

中国国家自然科学基金;

关键词：

Phase control; Fiber amplifier; Stochastic parallel gradient descent algorithm; HIGH-POWER; PHASE-LOCKING; COMBINATION;

D O I：

10.1016/j.optlastec.2021.107016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Coherently combining of seven-channel narrow-linewidth, linear-polarized, kW-level power all-fiber amplifiers has been successfully demonstrated by using the stochastic parallel gradient descent (SPGD) algorithm. The seven polarization-maintained fiber amplifiers are tiled by a collimator array with a high lenslet filling factor (-95%). Total emitting power is -8 kW, and -7.1 kW combined output power is achieved and the contrast of the far-field intensity pattern is measured to be -86% when the system is in the closed loop. This work could provide practical reference on scaling the output power of the tiled aperture coherent beam combining system.

引用

页数：5

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