Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Brand o, B
Santos, JE
Trines, RMGM https://orcid.org/0000-0003-2553-0289
Bingham, R https://orcid.org/0000-0002-9843-7635
Silva, LO https://orcid.org/0000-0003-2906-924X
Abstract
A generalized Wigner-Moyal statistical theory of radiation is used to obtain a general dispersion relation for Stimulated Brillouin Scattering (SBS) driven by a broadband radiation field with arbitrary statistics. The monochromatic limit is recovered from our general result, reproducing the classic monochromatic dispersion relation. The behavior of the growth rate of the instability as a simultaneous function of the bandwidth of the pump wave, the intensity of the incident field and the wave number of the scattered wave is further explored by numerically solving the dispersion relation. Our results show that the growth rate of SBS can be reduced by 1/3 for a bandwidth of 0.3 nm, for typical experimental parameters.
Description
Keywords
laser-plasma interactions, parametric instabilities, stimulated Brillouin scattering, photon kinetics
Journal Title
Plasma Physics and Controlled Fusion
Conference Name
Journal ISSN
0741-3335
1361-6587
1361-6587
Volume Title
63
Publisher
IOP Publishing
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All rights reserved