Enhanced light output power of quantum cascade lasers from a tilted front facet

被引：13

作者：

Ahn, Sangil ^{[1
]}

Schwarzer, Clemens ^{[1
]}

Zederbauer, Tobias ^{[1
]}

Detz, Hermann ^{[1
]}

Andrews, Aaron M. ^{[1
]}

Schrenk, Werner ^{[1
]}

Strasser, Gottfried ^{[1
]}

机构：

[1] Vienna Univ Technol, Ctr Micro & Nanostruct, A-1040 Vienna, Austria

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 13期

基金：

奥地利科学基金会;

关键词：

DIODES; EMISSION;

D O I：

10.1364/OE.21.015869

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a technique for enhancing the light output power of quantum cascade lasers (QCLs) by tilting of the front facet, which leads to a change of the modal reflectivity, resulting in an asymmetric light intensity distribution along the laser cavity. This asymmetry provides most of the light being emitted through one facet of the laser. An experimental study of threshold current, slope efficiency and light output power as a function of the front facet angles were performed and compared to conventional QCLs. The lasers with a front facet angle of 8 degrees shows a 20% improved power output from the front facet. (C) 2013 Optical Society of America

引用

页码：15869 / 15877

页数：9

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