dorsal/arxiv
View SchemaStimulated Raman backscattering of laser radiation in deep plasma channels
| Authors | Serguei Kalmykov, Gennady Shvets |
|---|---|
| Categories | |
| ArXiv ID | physics/0405114 |
| URL | https://arxiv.org/abs/physics/0405114 |
| DOI | 10.1063/1.1778743 |
| Journal | Physics of Plasmas, Vol. 11, No. 10, pp. 4686-4694 (2004) |
Abstract
Stimulated Raman backscattering (RBS) of intense laser radiation confined by a single-mode plasma channel with a radial variation of plasma frequency greater than a homogeneous-plasma RBS bandwidth is characterized by a strong transverse localization of resonantly-driven electron plasma waves (EPW). The EPW localization reduces the peak growth rate of RBS and increases the amplification bandwidth. The continuum of non-bound modes of backscattered radiation shrinks the transverse field profile in a channel and increases the RBS growth rate. Solution of the initial-value problem shows that an electromagnetic pulse amplified by the RBS in the single-mode deep plasma channel has a group velocity higher than in the case of homogeneous-plasma Raman amplification. Implications to the design of an RBS pulse compressor in a plasma channel are discussed.
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"abstract": "Stimulated Raman backscattering (RBS) of intense laser radiation confined by\na single-mode plasma channel with a radial variation of plasma frequency\ngreater than a homogeneous-plasma RBS bandwidth is characterized by a strong\ntransverse localization of resonantly-driven electron plasma waves (EPW). The\nEPW localization reduces the peak growth rate of RBS and increases the\namplification bandwidth. The continuum of non-bound modes of backscattered\nradiation shrinks the transverse field profile in a channel and increases the\nRBS growth rate. Solution of the initial-value problem shows that an\nelectromagnetic pulse amplified by the RBS in the single-mode deep plasma\nchannel has a group velocity higher than in the case of homogeneous-plasma\nRaman amplification. Implications to the design of an RBS pulse compressor in a\nplasma channel are discussed.",
"arxiv_id": "physics/0405114",
"authors": [
"Serguei Kalmykov",
"Gennady Shvets"
],
"categories": [
"physics.plasm-ph",
"physics.optics"
],
"doi": "10.1063/1.1778743",
"journal_ref": "Physics of Plasmas, Vol. 11, No. 10, pp. 4686-4694 (2004)",
"title": "Stimulated Raman backscattering of laser radiation in deep plasma channels",
"url": "https://arxiv.org/abs/physics/0405114"
},
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