Backward Raman amplification in plasmas with chirped wideband pump and seed pulses

Chirped wideband pump and seed pulses are usually considered for backward Raman amplification（BRA） in plasmas to achieve an extremely high-power laser pulse. However, current theoretical models only contain either a chirped pump or a chirped seed. In this paper, modified three-wave coupling equation...

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Published inChinese physics B Vol. 24; no. 1; pp. 298 - 302
Main Author 吴朝辉 魏晓峰 左言磊 刘兰琴 张智猛 李敏 周煜梁 粟敬钦
Format Journal Article
LanguageEnglish
Published 2015
Subjects
Amplification
Lingerie
Mathematical analysis
Mathematical models
Plasmas
Pumps
Seeds
Wideband
啁啾
宽带
拉曼放大
普林斯顿大学
泵
激光脉冲
种子
等离子体
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/24/1/014211

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Summary:Chirped wideband pump and seed pulses are usually considered for backward Raman amplification（BRA） in plasmas to achieve an extremely high-power laser pulse. However, current theoretical models only contain either a chirped pump or a chirped seed. In this paper, modified three-wave coupling equations are proposed for the BRA in the plasmas with both chirped wideband pump and seed. The simulation results can more precisely describe the experiments, such as the Princeton University experiment. The optimized chirp and bandwidth are determined based on the simulation to enhance the output intensity and efficiency.
Bibliography:Chirped wideband pump and seed pulses are usually considered for backward Raman amplification（BRA） in plasmas to achieve an extremely high-power laser pulse. However, current theoretical models only contain either a chirped pump or a chirped seed. In this paper, modified three-wave coupling equations are proposed for the BRA in the plasmas with both chirped wideband pump and seed. The simulation results can more precisely describe the experiments, such as the Princeton University experiment. The optimized chirp and bandwidth are determined based on the simulation to enhance the output intensity and efficiency.
ultrashort pulse generation; Raman lasers; laser–plasma interactions; plasma simulation
11-5639/O4
Wu Zhao-Hui,Wei Xiao-Feng,Zuo Yan-Lei,Liu Lan-Qin,Zhang Zhi-Meng,Li Min,Zhou Yu-Liang,Su Jing-Qin（ 1. Department of Electric-optics, Nanjing University of Science and Technology, Nanjing 210094, China;2. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China ;3. Science and Technology on Plasma Physics Laboratory, Mianyang 621900, China）
ObjectType-Article-1
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/1/014211