Raman forward scattering of chirped laser pulses [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. High Energy Physics Division, 2002.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- vp : digital, PDF file
- Additional Creators:
- Lawrence Berkeley National Laboratory
United States. Department of Energy. High Energy Physics Division
United States. Department of Energy. Office of Scientific and Technical Information
- Raman scattering of a high-intensity, short duration, frequency-chirped laser pulse propagating in an underdense plasma is examined. The growth of the direct forward scattered light is calculated for a laser pulse with a linear frequency chirp in various spatio-temporal regimes. This includes a previously undescribed regime of strongly-coupled four-wave nonresonant interaction, which is important for relativistic laser intensities. In all regimes of forward scattering, it is shown that the growth rate increases (decreases) for positive (negative) frequency chirp. The effect of chirp on the growth rate is relatively minor, i.e., a few percent chirp yields few percent changes in the growth rates. Numerical solutions based on fully nonlinear cold Maxwell-fluid model are presented which confirm analytical predictions. Relation of these results to recent experiments is discussed.
- Published through SciTech Connect.
"B& R KA1501020"
Physics of Plasmas 10 1 ISSN 1070-664X; PHPAEN FT
Schroeder, C.B.; Esarey, E.; Shadwick, B.A.; Leemans, W.P.
- Funding Information:
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