Ultrasharp-front laser pulses generated by energetic-electron flux triggering of laser propagation in overdense plasmas

被引：3

作者：

Li, Xiao-Ya ^{[1
]}

Yu, Yong ^{[1
]}

Shen, Bai-Fei ^{[2
]}

Wang, Jia-Xiang ^{[3
]}

Zhu, Wen-Jun ^{[1
]}

Chen, Zi-Yu ^{[1
]}

Ye, Yan ^{[1
]}

机构：

[1] CAEP, Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

[3] E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

来源：

PHYSICAL REVIEW E | 2013年 / 88卷 / 02期

基金：

中国国家自然科学基金;

关键词：

INDUCED TRANSPARENCY; OPACITY; INTENSE; MODEL;

D O I：

10.1103/PhysRevE.88.023106

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：

This paper reports that an initially opaque plasma foil, irradiated by a laser pulse with intensity below the self-induced transparency (SIT) threshold, will become transparent, if a flux of energetic electrons is present. Based on this phenomenon, named flux-induced transparency (FIT), an approach to obtaining ultrasharp-front laser pulses is proposed. With the presence of an energetic-electron flux generated by a p-polarized laser irradiating an overdense plasma foil from the rear side, the propagation of an s-polarized laser irradiating the front surface of the foil can be manipulated. The transmitted s-polarized laser pulse has an ultrasharp front which rises by three orders of magnitude within a few laser cycles. The profile of the transmitted pulse is tunable by controlling the time at which the energetic-electron flux arrives at the front surface.

引用

页数：6