Random laser action in ZnO

被引：101

作者：

Thareja, RK ^{[1
]}

Mitra, A ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2000年 / 71卷 / 02期

关键词：

D O I：

10.1007/s003400000274

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a direct evidence of random laser in optically pumped ZnO powder. Discrete lasing modes are observed above threshold. The laser emission spectra depend on the angle of observation and are random. The lasing action is attributed to the coherent feedback due to recurrent light scattering in the powder. The lasing threshold intensity depends on the excitation volume.

引用

页码：181 / 184

页数：4

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