Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 75, Issue 2-3, Pages 351-357Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-002-0963-z
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Pulsed thermoelectrically cooled QC-DFB lasers operating at 15.6 mum were characterized for spectroscopic gas sensing applications. A new method for wavelength scanning based on repetition rate modulation was developed. A nonwavelength-selective pyroelectric detector was incorporated in the sensor configuration giving the advantage of room-temperature operation and low cost. Absorption lines Of CO2 and H2O were observed in ambient air, providing information about the concentration of these species.
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