Pulse splitting of stimulated Raman backscattering with a chirped pump

被引：4

作者：

Chen, Q. ^{[1
]}

Wu, Z. ^{[1
]}

Johnson, L. ^{[2
]}

Gordon, D. ^{[2
]}

Sprangle, P. ^{[3
]}

Suckewer, S. ^{[1
]}

机构：

[1] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

[2] US Naval Res Lab, Washington, DC 20375 USA

[3] Univ Maryland, Elect & Comp Engn & Phys, College Pk, MD 20740 USA

来源：

PHYSICS OF PLASMAS | 2017年 / 24卷 / 12期

基金：

美国国家科学基金会;

关键词：

ELECTRON-BEAMS; LASER-PULSES; PLASMA; AMPLIFICATION; ACCELERATION; ULTRAINTENSE; COMPRESSION;

D O I：

10.1063/1.5009553

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Raman amplified seed splitting was demonstrated in the backscattering scheme in a plasma, when a significant chirp was introduced into the pump. Particle-in-cell simulations have shown that a single seed laser pulse gradually splits into two, self-compressed pulses in the nonlinear amplification regime. This is in difference to previous studies of the pump chirp, which mainly have focused on its compensation for the plasma density gradient, in order to maximize the resonant amplification. The splitting, as revealed by the spectral evolution of the amplified seed, is attributed to resonance slipping, which is the result of the spatio-temporal distribution of the gain of the chirped pump. Published by AIP Publishing.

引用

页数：6

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