Self-regulated propagation of intense infrared pulses in elongated soft-x-ray plasma amplifiers

被引：8

作者：

Oliva, Eduardo ^{[1
]}

Depresseux, Adrien ^{[2
]}

Tissandier, Fabien ^{[2
]}

Gautier, Julien ^{[2
]}

Sebban, Stephane ^{[2
]}

Maynard, Gilles ^{[1
]}

机构：

[1] Univ Paris 11, CNRS, UMR8578, Lab Phys Gaz & Plasmas, F-91405 Orsay, France

[2] Ecole Polytech ParisTech, CNRS, UMR7639, Lab Opt Appl,ENSTA ParisTech, F-91761 Palaiseau, France

来源：

PHYSICAL REVIEW A | 2015年 / 92卷 / 02期

关键词：

LASER; IONIZATION; COHERENT; DRIVEN; BEAMS; NM;

D O I：

10.1103/PhysRevA.92.023848

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Increasing the electron density of collisionally pumped plasma-based soft-x-ray lasers offers promising opportunities to deliver ultrashort pulses. However, strong nonlinear effects, such as overionization-induced refraction and self-focusing, hinder the propagation of the laser beam and thus the generation of elongated volume of lasing ions to be pumped. Using a particle-in-cell code and a ray-tracing model we demonstrate that optically preformed waveguides allow for addressing those issues through a self-regulation regime between self-focusing and overionization processes. As a result, guiding intense pulses over several millimeters leads to the implementation of saturated plasma amplifiers.

引用

页数：6

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