SUPPRESSION OF PARAMETRIC-INSTABILITY BY WEAKLY INCOHERENT LASER-BEAMS

被引：17

作者：

BERGER, RL

机构：

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.65.1207

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The linearized coupled-mode equations in two dimensions are solved numerically within the paraxial approximation to find the absolute-mode threshold of parametric instabilities driven by an incoherent laser beam. The results show that, for plasma lengths only a few times threshold, a surprisingly small temporal bandwidth that is substantially less than the growth rate 0 is effective in suppressing absolute growth. Only if the plasma length greatly exceeds the threshold is the necessary temporal bandwidth the larger value obtained from homogeneous plasma theory. © 1990 The American Physical Society.

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页码：1207 / 1210

页数：4

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