Reaching the nonlinear regime of Raman amplification of ultrashort laser pulses

被引：144

作者：

Cheng, W ^{[1
]}

Avitzour, Y

Ping, Y

Suckewer, S

Fisch, NJ

Hur, MS

Wurtele, JS

机构：

[1] Princeton Univ, Sch Engn & Appl Sci, Dept MAE, Princeton, NJ 08544 USA

[2] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08544 USA

[3] Princeton Univ, Dept Astrophys, Princeton, NJ 08544 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[5] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.94.045003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The intensity of a subpicosecond laser pulse was amplified by a factor of up to 1000 using the Raman backscatter interaction in a 2 mm long gas jet plasma. The process of Raman amplification reached the nonlinear regime, with the intensity of the amplified pulse exceeding that of the pump pulse by more than an order of magnitude. Features unique to the nonlinear regime such as gain saturation, bandwidth broadening, and pulse shortening were observed. Simulation and theory are in qualitative agreement with the measurements.

引用

页数：4

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