Mirrorless laser action by randomly distributed feedback in amplifying disordered media with scattering centers

被引：17

作者：

Herrmann, J

Wilhelmi, B

机构：

[1] Max Born Inst, D-12489 Berlin, Germany

[2] JENOPTIK AG, D-07739 Jena, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 66卷 / 03期

关键词：

D O I：

10.1007/s003400050393

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel mirrorless mechanism for coherent laser action is investigated, where effective feedback is provided by randomly distributed scattering particles of mesoscopic size, yielding a reverse coupling with the backscattered partial wave satisfying the Bragg condition. In contrast to other models, which can only explain an enhanced stimulated emission, this novel feedback mechanism yields conditions for steady-state round-trip gain, as well as for a round-trip phase shift necessary for coherent superposition of traveling waves in real lasers. Threshold gain, linewidth narrowing and slope efficiency are calculated and compared with experimental observations.

引用

页码：305 / 312

页数：8

共 27 条

[1]

AMBARTSUMYAN RV, 1970, QUANTUM ELECTRON, P109

[2] INTERFACE REFLECTION EFFECTS IN PHOTONIC PAINT [J].