High power, high energy nanosecond pulsed fiber amplifier with a 20-μm-core fiber

被引：13

作者：

Dong, Z. Y. ^{[1
]}

Zou, S. Z. ^{[1
]}

Han, Z. H. ^{[1
]}

Yu, H. J. ^{[1
]}

Sun, L. ^{[1
]}

Hou, W. ^{[1
]}

Lin, X. C. ^{[1
]}

Li, J. M. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, Lab All Solid State Light Sources, Beijing 100083, Peoples R China

来源：

LASER PHYSICS | 2011年 / 21卷 / 03期

基金：

国家高技术研究发展计划(863计划);

关键词：

TEMPERATURE-DEPENDENCE; BEAM QUALITY; LASER; FREQUENCY;

D O I：

10.1134/S1054660X11050082

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a master-oscillator fiber power amplifier (MOPA) system with a core diameter of only 20 mu m and 6-m-long Yb(3+)-doped large mode area (LMA) double-clad fiber. Actively Q-switched Nd:YVO(4) laser is used as a seed source of light pluses. The system works at the repetition rate from 40 to 100 kHz. Up to 77 W of amplified radiation with the pulse duration of 17.8 ns at the wavelength of 1064 nm and repetition rate of 40 kHz are generated, corresponding to pulse energy of 1.9 mJ and the slope efficiency of 73.5%. In reported literatures, the 77 W is the highest average power with a 20-mu m-core LMA fiber to our knowledge. The stimulate Brillouin scattering (SBS) is observed and investigated.

引用

页码：536 / 539

页数：4

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