THE THEORY OF SPIRAL LASER-BEAMS IN NONLINEAR MEDIA

被引：120

作者：

KRUGLOV, VI ^{[1
]}

LOGVIN, YA ^{[1
]}

VOLKOV, VM ^{[1
]}

机构：

[1] BELORUSSIAN ACAD SCI,INST MATH,MINSK 220602,BELORUSSIA,USSR

来源：

JOURNAL OF MODERN OPTICS | 1992年 / 39卷 / 11期

关键词：

D O I：

10.1080/09500349214552301

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The analytical theory governing the propagation of spiral laser beams in nonlinear media is developed. It is shown that, taking into account the saturation effect in a Kerr medium, spiral beams have a tube-like structure with a periodicity along the axis of a nonlinear autoguide. In the case of the absence of saturation mechanism the collapse of spiral beams is described. It is found that critical autoguide power depends on the topological charge of the spiral beam. The stability of a circular symmetry structure of the beam is investigated. The analytical results are in good agreement with the numerical experiment.

引用

页码：2277 / 2291

页数：15

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