Performance of large aperture tapered fiber phase conjugate mirror with high pulse energy and 1-kHz repetition rate

被引：5

作者：

Zhao, Zhigang ^{[1
]}

Dong, Yantao ^{[1
]}

Pan, Sunqiang ^{[1
]}

Liu, Chong ^{[1
]}

Chen, Jun ^{[1
]}

Tong, Lixin ^{[2
]}

Gao, Qingsong ^{[2
]}

Tang, Chun ^{[2
]}

机构：

[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

[2] China Acad Engn Phys, Inst Appl Elect, Mianyang 621900, Peoples R China

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 02期

基金：

中国国家自然科学基金;

关键词：

STIMULATED BRILLOUIN-SCATTERING; MASTER-OSCILLATOR; POWER-AMPLIFIER; OPTICAL-FIBERS; PICOSECOND; SILICA; DELIVERY; OUTPUT;

D O I：

10.1364/OE.20.001896

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A large aperture fused silica tapered fiber phase conjugate mirror is presented with a maximum 70% stimulated Brillouin scattering (SBS) reflectivity, which is obtained with 1 kHz repetition rate, 15 ns pulse width and 38 mJ input pulse energy. To the best of our knowledge, this is the highest SBS reflectivity ever reported by using optical fiber as a phase conjugate mirror for such high pulse repetition rate (1 kHz) and several tens of millijoule (mJ) input pulse energy. The influences of fiber end surface quality and pump pulse widths on SBS reflectivity are investigated experimentally. The results show that finer fiber end surface quality and longer input pulse widths are preferred for obtaining higher SBS reflectivity with higher input pulse energy. Double passing amplification experiments are also performed. 52 mJ pulse energy is achieved at 1 kHz repetition rate, with a reflected SBS pulse width of 1.5 ns and a M-2 factor of 2.3. The corresponding peak power reaches 34.6 MW. Obvious beam quality improvement is observed. (C)2012 Optical Society of America

引用

页码：1896 / 1902

页数：7

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