Raman backscattering saturation due to coupling between ωp and 2ωp modes in plasma

G. Raj; B. Ersfeld; G. Vieux; S. Yoffe; Min Sup Hur; R. A. Cairns; D. A. Jaroszynski

doi:10.1088/1367-2630/17/10/103026

Raman backscattering saturation due to coupling between ωp and 2ωp modes in plasma

G. Raj, B. Ersfeld, G. Vieux, S. Yoffe, Min Sup Hur, R. A. Cairns, D. A. Jaroszynski

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Abstract

Raman backscattering (RBS) in plasma is the basis of plasma-based amplifiers and is important in laser-driven fusion experiments. We show that saturation can arise from nonlinearities due to coupling between the fundamental and harmonic plasma wave modes for sufficiently intense pump and seed pulses. We present a time-dependent analysis that shows that plasma wave phase shifts reach a maximum close to wavebreaking. The study contributes to a new understanding of RBS saturation for counter-propagating laser pulses.

Original language	English
Article number	103026
Number of pages	11
Journal	New Journal of Physics
Volume	17
Early online date	14 Oct 2015
DOIs	https://doi.org/10.1088/1367-2630/17/10/103026 https://doi.org/10.15129/0d10d9a7-ced8-446c-a65d-09a1bc9e546d
Publication status	Published - 14 Oct 2015

Keywords

raman backscattering
saturation
plasma waves
mode coupling

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Raj-etal-NJP2015-raman-backscattering-saturation-due-coupling-between-ωp-2ωpFinal published version, 1.71 MBLicence: CC BY 4.0

Cite this

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title = "Raman backscattering saturation due to coupling between ωp and 2ωp modes in plasma",

abstract = "Raman backscattering (RBS) in plasma is the basis of plasma-based amplifiers and is important in laser-driven fusion experiments. We show that saturation can arise from nonlinearities due to coupling between the fundamental and harmonic plasma wave modes for sufficiently intense pump and seed pulses. We present a time-dependent analysis that shows that plasma wave phase shifts reach a maximum close to wavebreaking. The study contributes to a new understanding of RBS saturation for counter-propagating laser pulses.",

keywords = "raman backscattering, saturation, plasma waves, mode coupling",

author = "G. Raj and B. Ersfeld and G. Vieux and S. Yoffe and Hur, {Min Sup} and Cairns, {R. A.} and Jaroszynski, {D. A.}",

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TY - JOUR

T1 - Raman backscattering saturation due to coupling between ωp and 2ωp modes in plasma

AU - Raj, G.

AU - Ersfeld, B.

AU - Vieux, G.

AU - Yoffe, S.

AU - Hur, Min Sup

AU - Cairns, R. A.

AU - Jaroszynski, D. A.

PY - 2015/10/14

Y1 - 2015/10/14

N2 - Raman backscattering (RBS) in plasma is the basis of plasma-based amplifiers and is important in laser-driven fusion experiments. We show that saturation can arise from nonlinearities due to coupling between the fundamental and harmonic plasma wave modes for sufficiently intense pump and seed pulses. We present a time-dependent analysis that shows that plasma wave phase shifts reach a maximum close to wavebreaking. The study contributes to a new understanding of RBS saturation for counter-propagating laser pulses.

AB - Raman backscattering (RBS) in plasma is the basis of plasma-based amplifiers and is important in laser-driven fusion experiments. We show that saturation can arise from nonlinearities due to coupling between the fundamental and harmonic plasma wave modes for sufficiently intense pump and seed pulses. We present a time-dependent analysis that shows that plasma wave phase shifts reach a maximum close to wavebreaking. The study contributes to a new understanding of RBS saturation for counter-propagating laser pulses.

KW - raman backscattering

KW - saturation

KW - plasma waves

KW - mode coupling

UR - http://stacks.iop.org/1367-2630/17/i=10/a=103026

U2 - 10.1088/1367-2630/17/10/103026

DO - 10.1088/1367-2630/17/10/103026

M3 - Article

SN - 1367-2630

VL - 17

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 103026

ER -

Raman backscattering saturation due to coupling between ωp and 2ωp modes in plasma

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Keywords

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Critical Mass: Collective radiation-beam-plasma interactions at high intensities