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Optics Letters

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  • Vol. 37, Iss. 13 — Jul. 1, 2012
  • pp: 2502–2504

Quartz enhanced photoacoustic spectroscopy with a 3.38 μm antimonide distributed feedback laser

Mohammad Jahjah, Sofiane Belahsene, Lars Nähle, Marc Fischer, Johannes Koeth, Yves Rouillard, and Aurore Vicet  »View Author Affiliations


Optics Letters, Vol. 37, Issue 13, pp. 2502-2504 (2012)
http://dx.doi.org/10.1364/OL.37.002502


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Abstract

A system for gas sensing based on the quartz-enhanced photoacoustic spectroscopy technique has been developed. It makes use of a quantum well distributed feedback (DFB) laser diode emitting at 3.38 μm. This laser emits near room temperature in the continuous wave regime. A spectrophone, consisting of a quartz tuning fork and two steel microresonators were used. Second derivative wavelength modulation detection is used to perform low concentration measurements. The sensitivity and the linearity of the Quartz enhanced photoacoustic spectroscopy (QEPAS) sensor were studied. A normalized noise equivalent absorption coefficient of 4.06×109cm1·W/Hz1/2 was achieved.

© 2012 Optical Society of America

OCIS Codes
(280.3420) Remote sensing and sensors : Laser sensors
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(250.5960) Optoelectronics : Semiconductor lasers

ToC Category:
Spectroscopy

History
Original Manuscript: March 9, 2012
Revised Manuscript: April 27, 2012
Manuscript Accepted: May 6, 2012
Published: June 20, 2012

Citation
Mohammad Jahjah, Sofiane Belahsene, Lars Nähle, Marc Fischer, Johannes Koeth, Yves Rouillard, and Aurore Vicet, "Quartz enhanced photoacoustic spectroscopy with a 3.38 μm antimonide distributed feedback laser," Opt. Lett. 37, 2502-2504 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-13-2502

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