Simultaneous measurements of hard X rays and second-harmonic emission in fs laser-target interactions

被引：78

作者：

Gizzi, LA

Giulietti, D

Giulietti, A

Audebert, P

Bastiani, S

Geindre, JP

Mysyrowicz, A

机构：

[1] ECOLE POLYTECH, ENSTA, LAB OPT APPL, F-91120 PALAISEAU, FRANCE

[2] CNR, IST TESRE, I-40129 BOLOGNA, ITALY

[3] UNIV PISA, DIPARTIMENTO FIS, I-56100 PISA, ITALY

[4] ECOLE POLYTECH, LAB UTILISAT LASERS INTENSE, F-91128 PALAISEAU, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.76.2278

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The interaction of 150 fs laser pulses with very thin plastic targets at an intensity of 5 X 10(17) W/cm(2) was investigated experimentally. Second-harmonic (SH) radiation was found to be emitted only in the specular direction. Both SH intensity and hard x-ray yield were found to be strongly dependent upon the laser polarization. The main features of SH emission are in agreement with a theoretical model which assumes resonance absorption as the source mechanism of electron plasma waves. Measurements suggest that, in conditions of maximum energy absorption, wave breaking of resonantly excited electron plasma waves takes place.

引用

页码：2278 / 2281

页数：4

共 14 条

[1]

Andreev A. A., 1992, Soviet Physics - JETP, V74, P963

[2] NOT-SO-RESONANT, RESONANT ABSORPTION [J].