Continuous-wave interband cascade lasers operating above room temperature at λ=4.7-5.6 μm

被引：72

作者：

Bewley, William W. ^{[1
]}

Canedy, Chadwick L. ^{[1
]}

Kim, Chul Soo ^{[1
]}

Kim, Mijin ^{[2
]}

Merritt, Charles D. ^{[1
]}

Abell, Joshua ^{[1
]}

Vurgaftman, Igor ^{[1
]}

Meyer, Jerry R. ^{[1
]}

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

[2] Sotera Def Solut Inc, Crofton, MD 21114 USA

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 03期

关键词：

POWER;

D O I：

10.1364/OE.20.003235

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have substantially improved the performance of interband cascade lasers emitting at lambda = 4.7 and 5.6 mu m, by applying the recently-pioneered approach of heavily doping the injector regions to rebalance the electron and hole concentrations in the active quantum wells. Ridges of approximate to 10 mu m width, 4 mm length, and high-reflectivity back facets achieve maximum continuous wave operating temperatures of 60 degrees C and 48 degrees C, respectively. The threshold power density of approximate to 1 kW/cm(2) at T = 25 degrees C is over an order of magnitude lower than for state-of-the-art quantum cascade lasers emitting in this spectral range. (C) 2012 Optical Society of America

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页码：3235 / 3240

页数：6

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