Self-organized bursts of coherent stimulated Raman scattering and hot electron transport in speckled laser plasma media

Nonlinear electron trapping physics governs the onset and saturation of stimulated Raman scattering (SRS) in laser beams with many speckles. Hot electrons from intense speckles, produced during SRS daughter electron-plasma-wave bowing and filamentation, seed and enhance the growth of SRS in neighbor...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2012-06, Vol.108 (24), p.245004-245004, Article 245004
Main Authors: Yin, L, Albright, B J, Rose, H A, Bowers, K J, Bergen, B, Kirkwood, R K
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nonlinear electron trapping physics governs the onset and saturation of stimulated Raman scattering (SRS) in laser beams with many speckles. Hot electrons from intense speckles, produced during SRS daughter electron-plasma-wave bowing and filamentation, seed and enhance the growth of SRS in neighboring speckles by reducing Landau damping. Trapping-induced nonlinearity and speckle interaction through transport of hot electrons and back- and sidescattered SRS waves enable the system of speckles to self-organize and exhibit coherent, sub-ps SRS bursts with more than 100% instantaneous reflectivity, consistent with a SRS transverse coherence width much larger than a speckle width.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.108.245004