Effect of external feedback on lasing in random media

被引：50
作者：
Cao, H [1 ]
Zhao, YG
Liu, X
Seelig, EW
Chang, RPH
机构：
[1] Northwestern Univ, Dept Phys & Astron, Ctr Mat Res, Evanston, IL 60208 USA
[2] Northwestern Univ, Dept Mat Sci & Engn, Ctr Mat Res, Evanston, IL 60208 USA
来源：
APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 09期
关键词：
D O I：
10.1063/1.124645
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have studied the effect of external feedback on random laser action in ZnO polycrystalline thin films. Reinjection of light into scattering-formed cavities strongly influences modes, intensity, and threshold of random lasers. We have compared the effect of external feedback from the side of the film and that from the film surface. Our study opens the possibility of controlling random laser frequencies by external feedback. (C) 1999 American Institute of Physics. [S0003-6951(99)04935-9].
引用
收藏
页码：1213 / 1215
页数：3
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