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Proceedings Paper

Plasma interaction with powerful laser beams
Author(s): Antonio Giulietti; Danilo Giulietti; Oswald Willi
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Paper 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.

Paper Details

Date Published: 1 October 1991
PDF: 14 pages
Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); doi: 10.1117/12.46901
Show Author Affiliations
Antonio Giulietti, Istituto di Fisica Atomica e Molecolare (Italy)
Danilo Giulietti, Univ. di Pisa (Italy)
Oswald Willi, Imperial College (United Kingdom)

Published in SPIE Proceedings Vol. 1502:
Industrial and Scientific Uses of High-Power Lasers
Jean Pierre Billon; Edouard Fabre, Editor(s)

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