Phys. Rev. Lett. 69, 2204–2207 (1992)Self-focusing and Raman scattering of laser pulses in tenuous plasmasReceived 26 May 1992; published in the issue dated 12 October 1992 The propagation of laser pulses of intensity which is large enough for relativistic self-focusing to occur is strongy affected by Raman instabilities. Both large and small angle scattering are important. The latter is the most severe since it couples with relativistic self-focusing leading the pulses to acquire significant axial and transverse structure in a time of the order of the self-focusing time. This prevents smooth self-focused pulses propagation for distances longer than the Rayleigh length except for pulse duration of the order of the plasma period. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.69.2204
DOI:
10.1103/PhysRevLett.69.2204
PACS:
52.40.Db, 42.65.Jx, 52.35.Mw, 52.40.Nk
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