Plasma interaction with powerful laser beams

Antonio Giulietti; Danilo Giulietti; Oswald Willi

doi:10.1117/12.46901

1 October 1991 Plasma interaction with powerful laser beams

Antonio Giulietti, Danilo Giulietti, Oswald Willi

Proceedings Volume 1502, Industrial and Scientific Uses of High-Power Lasers; (1991) https://doi.org/10.1117/12.46901
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

Abstract

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.

Citation Download Citation

Antonio Giulietti, Danilo Giulietti, and Oswald Willi "Plasma interaction with powerful laser beams", Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); https://doi.org/10.1117/12.46901

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