Abstract

The mid-infrared (MIR) spectral region (2-20 µm) is the molecular “fingerprint” region for many important organic and inorganic molecules [1, 2]. Miniaturized optical gas sensors based on MIR absorption spectroscopy are highly attractive for many applications such as industrial process control, environmental monitoring and medical diagnosis [3]. To enable low-cost and portable MIR gas sensors, compact and low power consuming single-mode light sources operating in the range of interest are highly desirable.

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