Effect of filamentation of Brillouin-scattering in large underdense plasmas irradiated by incoherent laser-light

Year: 1995

Authors: Afsharrad T., Gizzi LA., Desselberger M., Willi O.

Autors Affiliation: Univ London imperial Coll Sci Technol & Med, Blackett Lab, Price Consort Rd, London, England

Abstract: An experimental study of stimulated Brillouin backscatter (B-SBS), produced in a large ”homogeneous” underdense plasma using induced spatially incoherent laser light, is presented. The observations reveal that a strong correlation exists between the level of B-SBS and laser filamentation. It is suggested that a filamentory model of B-SBS is needed to better describe the scattering process under conditions of high laser irradiance and large plasma scale lengths.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 75 (24)      Pages from: 4413  to: 4416

KeyWords: smoothing techniques; instabilities;
DOI: 10.1103/PhysRevLett.75.4413

Citations: 4
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