Room temperature continuous wave operation of InAs-based quantum cascade lasers at 15 μm

被引:42
作者
Baranov, Alexei N. [1 ]
Bahriz, Michael [1 ]
Teissier, Roland [1 ]
机构
[1] Univ Montpellier, Inst Elect & Syst, UMR CNRS 5214, F-34095 Montpellier, France
关键词
GUIDE;
D O I
10.1364/OE.24.018799
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report low threshold InAs/AlSb quantum cascade lasers emitting near 15 mu m. The devices are based on a vertical design similar to those employed previously in far infrared InAs-based QCLs, whereas the doping level of the active core is considerably decreased. The lasers exhibit a threshold current density as low as 730 A/cm(2) in pulsed mode at room temperature and can operate in this regime up to 410K. The continuous wave regime of operation has been achieved in these devices at temperatures up to 20 degrees C. The cw regime is demonstrated for InAs-based QCLs for the first time at room temperature. (C) 2016 Optical Society of America
引用
收藏
页码:18799 / 18806
页数:8
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