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Christian Mann, Quankui Yang, F. Fuchs, Wolfgang Bronner, Klaus Köhler, Joachim Wagner

Single-Mode Quantum Cascade Lasers for Applications in Trace-Gas Sensing

Single-mode DFB quantum cascade lasers for applications in trace-gas sensing were designed, fabricated, and characterized. The devices can be applied for the detection of the fundamental rotational-vibrational transitions of nitric oxide in the wavelength range around 5.35μm (1870cm^-1) and of carbon monoxide at about 4.67μm (2140cm^-1) by high-resolution absorption spectroscopy. Driven in pulsed-mode the side mode suppression ratio is >27dB and the maximum operating temperature amounts to >400K (127°C). Typical linewidths are in the 100MHz range.

tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Print ISSN: 0171-8096
Volume: 72, 06/2005
Pages: 356 - 365

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