Millijoule pulse energy picosecond fiber chirped-pulse amplification system

被引：0

作者：

杨直 ^{[1
,2
]}

胡晓鸿 ^{[1
]}

王屹山 ^{[1
]}

张伟 ^{[1
]}

赵卫 ^{[1
]}

机构：

[1] State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences

[2] Graduate University of the Chinese Academy of Sciences

来源：

Chinese Optics Letters | 2011年 / 9卷 / 04期

关键词：

mode; AOM; Millijoule pulse energy picosecond fiber chirped-pulse amplification system; LMA;

D O I：

暂无

中图分类号：

TN248 [激光器];

学科分类号：

0803 ; 080401 ; 080901 ;

摘要：

The efficient generation of a 1.17-mJ laser pulse with 360 ps duration using an ytterbium (Yb)-doped fiber amplifier chain seeded by a homemade mode-locked fiber laser is demonstrated experimentally.A specially designed figure-of-eight fiber laser acts as the seed source of a chirped-pulse amplification (CPA) system and generates mode-locked pulses with hundreds of picosecond widths.Two kinds of large-mode-area (LMA) double-clad Yb-doped fibers are employed to construct the pre-amplifier and main amplifier.All of the adopted instruments help avoid severe nonlinearity in fibers to raise sub-nanosecond pulse energy with acceptable signal-to-noise ratio (SNR).The output spectrum of this fiber-based CPA system shows that amplified spontaneous emission (ASE) is suppressed to better than 30 dB,and the onset of stimulated Raman scattering is excluded.

引用

页码：46 / 49

页数：4