Dynamics of subpicosecond relativistic laser pulse self-channeling in an underdense preformed plasma

被引：148

作者：

Fuchs, J

Malka, G

Adam, JC

Amiranoff, F

Baton, SD

Blanchot, N

Heron, A

Laval, G

Miquel, JL

Mora, P

Pepin, H

Rousseaux, C

机构：

[1] Inst Natl Rech Sci Energie & Mat, Quebec City, PQ J3X 1S2, Canada

[2] Ecole Polytech, CNRS, Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France

[3] CEA, F-94195 Villeneuve St Georges, France

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

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.80.1658

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The formation and evolution of density channels created by the interaction of a short bright (600 fs, 5 x 10(18) W cm(-2) mu m(2)) laser pulse with a preformed plasma are studied by means of experiments and 2D particle-in-cell (PIC) simulations. Hollow density channels are observed by interferometry, and a fast radial expansion (5 x 10(8) cm/s) is measured. Magnetic fields around 50 MG inferred from Faraday rotation measurements suggest the occurrence of self-focusing. The PIC simulations support this hypothesis and shaw ion depletion during the laser pulse as well as radial expansion in agreement with experiments.

引用

页码：1658 / 1661

页数：4

共 14 条

[1] Anomalous absorption of very high-intensity laser pulses propagating through moderately dense plasma [J].