Dual-wavelength quantum cascade laser for trace gas spectroscopy

被引：43

作者：

Jagerska, J. ^{[1
]}

Jouy, P. ^{[2
]}

Hugi, A. ^{[2
]}

Tuzson, B. ^{[1
]}

Looser, H. ^{[3
]}

Mangold, M. ^{[1
]}

Beck, M. ^{[2
]}

Emmenegger, L. ^{[1
]}

Faist, J. ^{[2
]}

机构：

[1] Empa, Lab Air Pollut & Environm Technol, CH-8600 Dubendorf, Switzerland

[2] ETH, Inst Quantum Elect, CH-8093 Zurich, Switzerland

[3] FHNW, Inst Aerosol & Sensor Technol, CH-5210 Windisch, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 16期

基金：

新加坡国家研究基金会;

关键词：

DISTRIBUTED-FEEDBACK; SEMICONDUCTOR-LASER; OPERATION;

D O I：

10.1063/1.4899061

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a sequentially operating dual-wavelength quantum cascade laser with electrically separated laser sections, emitting single-mode at 5.25 and 6.25 mu m. Based on a single waveguide ridge, this laser represents a considerable asset to optical sensing and trace gas spectroscopy, as it allows probing multiple gas species with spectrally distant absorption features using conventional optical setups without any beam combining optics. The laser capability was demonstrated in simultaneous NO and NO2 detection, reaching sub-ppb detection limits and selectivity comparable to conventional high-end spectroscopic systems. (C) 2014 AIP Publishing LLC.

引用

页数：4

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