High power thermoelectrically cooled and uncooled quantum cascade lasers with optimized reflectivity facet coatings

被引：75

作者：

Maulini, Richard ^{[1
]}

Lyakh, Arkadiy ^{[1
]}

Tsekoun, Alexei ^{[1
]}

Go, Rowel ^{[1
]}

Pfluegl, Christian ^{[2
]}

Diehl, Laurent ^{[2
]}

Capasso, Federico ^{[2
]}

Patel, C. Kumar N. ^{[1
,3
]}

机构：

[1] Pranalytica Inc, Santa Monica, CA 90401 USA

[2] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 91748 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 15期

关键词：

PERFORMANCE;

D O I：

10.1063/1.3246799

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a method of preserving the device wall-plug efficiency by adjusting mirror losses with facet coatings for longer cavity quantum cascade lasers. An experimental study of output power and wall-plug efficiency as functions of mirror losses was performed by varying the front facet coating reflectivity with a high-reflectivity-coated rear facet. The use of optimized reflectivity coatings on 7-mm-long chips resulted in continuous-wave output power of 2.9 W at 293 K for thermoelectrically cooled devices mounted on AlN submounts and average and continuous-wave output power in excess of 1 W for uncooled devices emitting at 4.6 mu m. (C) 2009 American Institute of Physics. [doi:10.1063/1.3246799]

引用

页数：3

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