Anomalous spectral signatures of high-intensity stimulated Raman backscattering
- Vinca Institute of Nuclear Sciences, P.O.B. 522, 11001 Belgrade (Yugoslavia)
The nonlinear three-wave interaction model of stimulated Raman backscattering in an underdense plasma layer, with a relativistic detuning taken into account, is simulated in space-time. A mechanism is discovered based on a systematic transition to a chaotic state via quasiperiodic and intermittent regimes, that predicts a progressive growth in the backscatter complexity with an increase in laser intensity. Anomalous signatures of the backscatter, such as bursting and incoherence, together with broad, modulated and blue-shifted spectra are readily observed. Consistency with recent data on high-intensity sub-picosecond laser plasma experiments is established. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 397245
- Report Number(s):
- CONF-950476--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 369; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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