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Title: Upper limit power for self-guided propagation of intense lasers in plasma

Abstract

It is shown that there is an upper-limit laser power for self-focusing of a laser pulse in plasma in addition to the well-known lower-limit critical power set by the relativistic effect. This upper limit is caused by the transverse ponderomotive force of the laser, which tends to expel plasma electrons from the laser propagating area. Furthermore, there is a lower-limit plasma density for a given laser spot size, below which self-focusing does not occur for any laser power. Both the lower-limit density and the upper-limit power are derived theoretically and verified by two-dimensional and three-dimensional particle-in-cell simulations. It is also found that plasma channels may be unfavorable for stable guiding of lasers above the upper-limit power.

Authors:
; ; ;  [1]; ;  [1];  [2]; ;  [3];  [4];  [5];  [6]
  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)
  2. (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China)
  3. Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China)
  4. Graduate School of Engineering, Utsunomiya University, 7-1-2 Yohtoh, Utsunomiya 321-8585 (Japan)
  5. Institute of Applied Physics and Computational Mathematics, Beijing 100094 (China)
  6. Departments of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States)
Publication Date:
OSTI Identifier:
22080514
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 18; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRONS; LASER RADIATION; LIGHT TRANSMISSION; PLASMA; PLASMA DENSITY; PLASMA SIMULATION; PONDEROMOTIVE FORCE; PULSES; RELATIVISTIC RANGE

Citation Formats

Wang Weimin, Hu Zhidan, Chen Liming, Li Yutong, Sheng Zhengming, Zhang Jie, Key Laboratory for Laser Plasmas, Zeng Ming, Liu Yue, Kawata, Shigeo, Zheng Chunyang, and Mori, Warren B. Upper limit power for self-guided propagation of intense lasers in plasma. United States: N. p., 2012. Web. doi:10.1063/1.4765056.
Wang Weimin, Hu Zhidan, Chen Liming, Li Yutong, Sheng Zhengming, Zhang Jie, Key Laboratory for Laser Plasmas, Zeng Ming, Liu Yue, Kawata, Shigeo, Zheng Chunyang, & Mori, Warren B. Upper limit power for self-guided propagation of intense lasers in plasma. United States. doi:10.1063/1.4765056.
Wang Weimin, Hu Zhidan, Chen Liming, Li Yutong, Sheng Zhengming, Zhang Jie, Key Laboratory for Laser Plasmas, Zeng Ming, Liu Yue, Kawata, Shigeo, Zheng Chunyang, and Mori, Warren B. Mon . "Upper limit power for self-guided propagation of intense lasers in plasma". United States. doi:10.1063/1.4765056.
@article{osti_22080514,
title = {Upper limit power for self-guided propagation of intense lasers in plasma},
author = {Wang Weimin and Hu Zhidan and Chen Liming and Li Yutong and Sheng Zhengming and Zhang Jie and Key Laboratory for Laser Plasmas and Zeng Ming and Liu Yue and Kawata, Shigeo and Zheng Chunyang and Mori, Warren B.},
abstractNote = {It is shown that there is an upper-limit laser power for self-focusing of a laser pulse in plasma in addition to the well-known lower-limit critical power set by the relativistic effect. This upper limit is caused by the transverse ponderomotive force of the laser, which tends to expel plasma electrons from the laser propagating area. Furthermore, there is a lower-limit plasma density for a given laser spot size, below which self-focusing does not occur for any laser power. Both the lower-limit density and the upper-limit power are derived theoretically and verified by two-dimensional and three-dimensional particle-in-cell simulations. It is also found that plasma channels may be unfavorable for stable guiding of lasers above the upper-limit power.},
doi = {10.1063/1.4765056},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 18,
volume = 101,
place = {United States},
year = {2012},
month = {10}
}