Lasing with resonant feedback in random media

被引：7

作者：

Cao, H ^{[1
]}

Ling, Y

Xu, JY

Burin, AL

Chang, RPH

机构：

[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 338卷 / 1-4期

关键词：

random laser; optical scattering; disordered system;

D O I：

10.1016/j.physb.2003.08.030

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We studied experimentally lasing with resonant feedback in disordered media. The lasing threshold and the number of lasing modes exhibit strong dependence on the mean free path. Using a spectrally resolved speckle technique, we obtained the spatial field correlation function for individual lasing states. The electric field amplitude of a lasing state falls exponentially with the transverse coordinate at the sample surface. The spatial extent of a lasing state shrinks as the scattering length decreases. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：215 / 218

页数：4