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Development of Carbon monoxide Sensor based on Distributed Feedback Quantum Cascade Laser (DFB-QCL) for Environmental Monitoring

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Abstract

An ultra-sensitive and selective Direct Absorption based distributed feedback quantum cascade laser (DFB-QCL) sensor platform was demonstrated for detection of carbon monoxide (CO). This sensor used a wavelength tuned, high power, continuous wave (CW), DFB-QCL as the excitation source. For the R (12) CO absorption line, located at 2190 cm−1, a minimum detectable concentration of 1 parts per million by volume (ppmv) at atmospheric pressure was achieved with a 1 sec response time.

© 2014 Optical Society of America

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