Temporal and angular resolution of the ionization-induced refraction of a short laser pulse in helium gas

被引：89

作者：

Chessa, P ^{[1
]}

De Wispelaere, E

Dorchies, F

Malka, V

Marquès, JR

Hamoniaux, G

Mora, P

Amiranoff, F

机构：

[1] Ecole Polytech, ENSTA, Lab Opt Appl, F-91128 Palaiseau, France

[2] Univ Paris 06, Ecole Polytech, CNRS, CEA,LULI,UMR 7605, F-91128 Palaiseau, France

[3] Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France

[4] CNR, IFAM, I-56100 Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.82.552

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The refraction of a short and intense laser pulse focused in helium gas has been studied both experimentally and numerically. Using the time-frequency correspondence of a 120 fs laser pulse linearly chirped to 1.8 ps, the ionization-induced refraction is resolved both temporally and angularly. Two-dimensional numerical simulations are performed to calculate the laser propagation, from the focusing lens to the detector. With such a simulation, we get a quantitative agreement with the experiment, both for the refraction of the chirped pulse and for the ionization-induced blueshifted spectrum of the compressed pulse. [S0031-9007(98)08310-0].

引用

页码：552 / 555

页数：4

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