Temporal characterization of a self-modulated laser wakefield

被引：93

作者：

LeBlanc, SP ^{[1
]}

Downer, MC ^{[1
]}

Wagner, R ^{[1
]}

Chen, SY ^{[1
]}

Maksimchuk, A ^{[1
]}

Mourou, G ^{[1
]}

Umstadter, D ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT PHYS,AUSTIN,TX 78712

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 27期

关键词：

D O I：

10.1103/PhysRevLett.77.5381

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temporal envelope of plasma density oscillations in the wake of an intense (I similar to 4 x 10(18) W/cm(2), lambda = 1 mu m) laser pulse (400 fs) is measured using forward Thomson scattering from a copropagating, frequency-doubled probe pulse. The wakefield oscillations in a fully ionized helium plasma (n(e) = 3 x 10(19) cm(-3)) are observed to reach maximum amplitude (delta n(e)/n(e) similar to 0.1) 300 fs after the pump pulse. The wakefield growth (3.5 ps(-1)) and decay (1.9 ps(-1)) rates are consistent with the forward Raman scattering instability and Landau damping, respectively.

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页码：5381 / 5384

页数：4

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