Tunable Diode Laser Absorption Spectroscopy of Carbon Monoxide Around 2.35 µm
Applied Optics, Vol. 37, Issue 33, pp. 7906-7911 (1998)
http://dx.doi.org/10.1364/AO.37.007906
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Abstract
Novel GaInSbAs/GaSb multiple-quantum-well lasers operating near room temperature have been successfully used for tunable diode laser absorption spectroscopy in the vicinity of 2.35 μm. Continuous current tuning over a more than 150-GHz frequency range has been realized. Direct absorption measurements have been carried out on the R, R, R, and R lines of carbon monoxide. Traces of carbon monoxide at the level of 0.3 part in 106 in volume at 100 Torr could be detected by the low-frequency wavelength-modulation technique and an astigmatic multipass cell. These results show a potential use of these diode lasers in portable low-cost trace-pollutant sensors.
© 1998 Optical Society of America
[Optical Society of America ]
OCIS Codes
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(280.3420) Remote sensing and sensors : Laser sensors
(300.1030) Spectroscopy : Absorption
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6380) Spectroscopy : Spectroscopy, modulation
Citation
Jean-Christophe Nicolas, Alexei N. Baranov, Yvan Cuminal, Yves Rouillard, and Claude Alibert, "Tunable Diode Laser Absorption Spectroscopy of Carbon Monoxide Around 2.35 µm," Appl. Opt. 37, 7906-7911 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-33-7906
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