Raman amplification in the coherent wave-breaking regime

被引：12

作者：

Farmer, J. P. ^{[1
]}

Pukhov, A. ^{[1
]}

机构：

[1] Univ Dusseldorf, Theoret Phys 1, D-40225 Dusseldorf, Germany

来源：

PHYSICAL REVIEW E | 2015年 / 92卷 / 06期

关键词：

LASER-PULSE; PLASMA;

D O I：

10.1103/PhysRevE.92.063109

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：

In regimes far beyond the wave-breaking threshold of Raman amplification, we show that significant amplification can occur after the onset of wave breaking, before phase mixing destroys the coherent coupling between pump, probe, and plasma wave. Amplification in this regime is therefore a transient effect, with the higher-efficiency "coherent wave-breaking" (CWB) regime accessed by using a short, intense probe. Parameter scans illustrate the marked difference in behavior between below wave breaking, in which the energy-transfer efficiency is high but total energy transfer is low, wave breaking, in which efficiency is low, and CWB, in which moderate efficiencies allow the highest total energy transfer.

引用

页数：5

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