Modal analysis of large spot size, low output beam divergence quantum-dot lasers

被引：8

作者：

Corbett, Brian ^{[1
]}

Lambkin, Paul

O'Callaghan, James

Deubert, Stefan

Kaiser, Wolfgang

Reithmaier, Johann Peter

Forchel, Alfred

机构：

[1] Natl Univ Ireland Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland

[2] Univ Wurzburg, D-97074 Wurzburg, Germany

[3] Univ Kassel, Inst Nanostruct Technol & Analyt, D-34109 Kassel, Germany

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2007年 / 19卷 / 9-12期

关键词：

large optical cavity (LOC); low divergence; quantum-dot (QD) lasers;

D O I：

10.1109/LPT.2007.897569

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Large spot size ridge waveguide lasers utilizing a low modal gain single quantum dot layer emitting at 925 nm were designed and fabricated. Ridge waveguides with width < 3 mu m emit in a single transverse mode with a low transverse full-width at half-maximum divergence of 20 degrees. Wider ridges initially lase in the first-order transverse mode before collapsing to the fundamental mode. This characteristic is explained by a thermally induced increase in the refractive index of the waveguide core. All lasers operate in a single lateral mode.

引用

页码：916 / 918

页数：3

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