FREQUENCY MIXING OF HIGH-INTENSITY LASER-LIGHT WITH STIMULATED RAMAN BACKSCATTERED RADIATION IN UNDERDENSE PLASMAS

Authors
KRUSHELNICK K MOORE CI TING A BURRIS HR
Citation
K. Krushelnick et al., FREQUENCY MIXING OF HIGH-INTENSITY LASER-LIGHT WITH STIMULATED RAMAN BACKSCATTERED RADIATION IN UNDERDENSE PLASMAS, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 58(3), 1998, pp. 4030-4032
Citations number
15
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
58
Issue
3
Year of publication
1998
Part
B
Pages
4030 - 4032
Database
ISI
SICI code
1063-651X(1998)58:3<4030:FMOHLW>2.0.ZU;2-K
Abstract
Sidescattered radiation from the interaction of an ultraintense laser pulse (P>2 TW) with underdense helium plasmas (n(e)approximate to 10(1 9) cm(-3)) is measured and emission at 90 degrees from the axis of las er propagation is observed to be broadened significantly near the seco nd harmonic (Delta lambda=30-40 nm). This result is consistent with su m frequency mixing of forward propagating laser light and the broadene d backscattered stimulated Raman scattered radiation that occurs withi n transient filamentary structures produced by the ponderomotive force of the focused laser pulse.