Relativistic channel-coupling focusing enhanced nonlinear guiding of an intense laser beam in a plasma channel |
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Authors: | Mingwei Liu Ruxin Li Zhizhan Xu |
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Institution: | a State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China b Korea Atomic Energy Research Institute, Yusung, Taejon 305-353, Republic of Korea |
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Abstract: | We employ the variational method to study the optical guiding of an intense laser beam in a preformed plasma channel without using the weakly relativistic approximation. Apart from the dependence on the laser power and the nonlinear channel strength parameter, the beam focusing properties is shown also to be governed by the laser intensity. Relativistic channel-coupling focusing, arising from the coupling between relativistic self-focusing and linear channel focusing, can enhance relativistic self-focusing but its strength is weaker than that of linear channel focusing. |
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Keywords: | 52 40 Fd 52 35 Mw 42 65 Jx 41 20 Jb |
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