Long-term mode shape degradation in large mode area Yb-doped pulsed fiber amplifiers

被引：11

作者：

Bobkov, K. K. ^{[1
]}

Bubnov, M. M. ^{[1
]}

Aleshkina, S. S. ^{[1
]}

Likhachev, M. E. ^{[1
]}

机构：

[1] Russian Acad Sci, Fiber Opt Res Ctr, 38 Vavilov St, Moscow 119333, Russia

来源：

LASER PHYSICS LETTERS | 2017年 / 14卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

long-term mode degradation; long-period grating; photodarkening; pulsed fiber lasers;

D O I：

10.1088/1612-202X/14/1/015102

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Experimental observation of long-term output mode shape degradation in pulsed Yb-doped fiber amplifiers is reported for the first time. The process occurs in large mode area Yb-doped fibers and is caused by the formation of the long period grating responsible for power transfer from the fundamental mode to the first high-order mode. The linkage between the process and photodarkening was revealed.

引用

页数：7

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