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Evidence for whole-beam self-focusing of induced spatially incoherent laser-light in large underdense plasma

Anno: 1992

Autori: Afsharrad T., Gizzi LA., Desselberger M., Khattak F., Willi O., Giulietti A.

Affiliazione autori: Univ London imperial Coll Sci Technol & Med, Blackett Lab, Price Consort Rd, London, England;
CNR, Ist Fis Atom & Molec, via Giardino 7, I-56127 Pisa, Italy

Abstract: The propagation of an intense electromagnetic pulse in a large underdense plasma has been investigated using spatially and temporally incoherent laser light. Spatial incoherence was obtained using the induced spatial incoherence (ISI) technique. The first observation of the occurrence of thermal whole-beam self-focusing with ISI laser light is presented. Thermal imaging with a multiframe x-ray camera (140 ps gate time) was used to record the propagation characteristics of the interaction beam through the plasma. A direct measurement of the self-focusing growth length has been made.


Volume: 68 (7)      Da Pagina: 942  A: 945

Parole chiavi: smoothing techniques; filamentation; instabilities; illumination; scattering
DOI: 10.1103/PhysRevLett.68.942

Citazioni: 21
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2021-09-19
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