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
收藏
页码：215 / 218
页数：4
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