Oblique stimulated Raman scattering of a short laser pulse in a plasma channel

The spatiotemporal evolution of parametric instabilities such as stimulated Raman scattering is studied analytically in time and two spatial dimensions. Initial and boundary conditions are chosen to represent the entrance, propagation, and exit of a laser pulse of finite extent as it progresses thro...

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Bibliographic Details
Published in:Physics of plasmas 2000-12, Vol.7 (12), p.5096-5105
Main Authors: Turano, E. J., McKinstrie, C. J.
Format: Article
Language:English
Subjects:
AMPLITUDES
BOUNDARY CONDITIONS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COLLISIONAL PLASMA
DAMPING
DIMENSIONS
LASERS
PARAMETRIC INSTABILITIES
PHYSICS
PLASMA
SCATTERING
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Summary:The spatiotemporal evolution of parametric instabilities such as stimulated Raman scattering is studied analytically in time and two spatial dimensions. Initial and boundary conditions are chosen to represent the entrance, propagation, and exit of a laser pulse of finite extent as it progresses through a homogeneous collisional plasma channel. For most scattering angles daughter wave growth is enhanced by lateral reflections within the channel. At late times the two-dimensional interaction approaches a one-dimensional damped mode in which the dissipative loss from lateral transmission of the Stokes wave through the channel boundaries is equivalent to an overall damping of the Stokes amplitudes within the channel.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.1319332