Single-mode InP-based quantum cascade lasers for applications in trace-gas sensing

被引：11
|
作者：
Mann, C [1 ]
Yang, QK [1 ]
Fuchs, F [1 ]
Bronner, N [1 ]
Köhler, K [1 ]
Beyer, T [1 ]
Braun, T [1 ]
Lambrecht, A [1 ]
机构：
[1] Fraunhofer Inst Appl Solid State Phys, D-79108 Freiburg, Germany
来源：
NOVEL IN-PLANE SEMICONDUCTOR LASERS III | 2004年 / 5365卷
关键词：
quantum cascade laser; distributed feedback; mid-infrared; trace-gas detection; nitric oxide;
D O I：
10.1117/12.528964
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present pulsed operation of index-coupled distributed feedback quantum cascade lasers based oil the GaInAs/ AlInAs/InP materials system emitting at a wavelength around 5.4 mum. The emission is single mode in the entire investigated temperature range between 240 K and 350 K with a side mode suppression ratio larger than 27 dB. These devices are employed in a fast gas detection experiment for the quantitative detection of nitric oxide. With the present measurement system minimum noise equivalent concentrations between 16.7 ppbv and 23.3 ppbv are obtained, corresponding to mininium detectable optical densities between 4.7(.)10(-5) and 6.5(.)10(-5).
引用
收藏
页码：173 / 183
页数：11
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