1 October 1991 Plasma interaction with powerful laser beams
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Experimental results obtained in different conditions of interaction are reported. Several instabilities have been investigated including filamentation, stimulated Brillouin and Raman scattering, two plasmon decay, harmonic generation, self-phase modulation, and hot electron acceleration. Threshold and saturation levels of some of those processes have been measured. Time-resolved spectroscopy gave detailed information on the physics involved. The effect of several beam-smoothing techniques has been tested. Particularly, random phasing and induced spatial incoherence, when properly matched with focusing optics, showed reduction or suppression of most of the above mentioned instabilities.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antonio Giulietti, Danilo Giulietti, Oswald Willi, "Plasma interaction with powerful laser beams", Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); doi: 10.1117/12.46901; https://doi.org/10.1117/12.46901

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