Propagation of laser beams in photonic crystals with cubic non-linearity

被引：0
|
作者：
Kurilkina, SN [1 ]
机构：
[1] Gomel State Univ, Dept Opt, Gomel 246019, BELARUS
来源：
ICONO 2001: NONLINEAR OPTICAL PHENOMENA AND NONLINEAR DYNAMICS OF OPTICAL SYSTEMS | 2002年 / 4751卷
关键词：
divergence of laser beam; tensor derivative of group velocity; photonic crystal;
D O I：
10.1117/12.475904
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
It has been investigated the influence of cubic optical non-linearity and derivative of group velocity on laser beam divergence by the propagation in one-dimentional photonic crystal which is layered periodic structure formed by anisotropic media. It has been established that the laser beam divergence is determined by two physical mechanisms: influence of nonlinearity and scattering on diffiractional grating appearing in the crystal because the presence of periodicity of optical properties. It has been shown that the second mechanism may become the reason of strengthening the focusing.. It has been analyzed the influence of low- frequency electric field on this phenomenon. It has been found the conditions of non-diffiractional beam propagation in photonic nonlinear crystal.
引用
收藏
页码：157 / 162
页数：6
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