Publication Date:
2011-08-24
Description:
Pulsed thermoelectrically cooled QC-DFB lasers operating at 15.6 micrometers were characterized for spectroscopic gas sensing applications. A new method for wavelength scanning based on repetition rate modulation was developed. A non-wavelength-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.
Keywords:
Meteorology and Climatology
Type:
Applied physics. B, Lasers and optics (ISSN 0946-2171); Volume 75; 2-3; 351-7
Format:
text