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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 10 — May. 15, 2009
  • pp: 1594–1596

Off-beam quartz-enhanced photoacoustic spectroscopy

Kun Liu, Xiaoyong Guo, Hongming Yi, Weidong Chen, Weijun Zhang, and Xiaoming Gao  »View Author Affiliations


Optics Letters, Vol. 34, Issue 10, pp. 1594-1596 (2009)
http://dx.doi.org/10.1364/OL.34.001594


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Abstract

An off-beam (OB) detection approach is suggested and experimentally investigated and optimized for quartz-enhanced photoacoustic spectroscopy (QEPAS). This OB-QEPAS configuration, very simple in assembly, not only allows for use of larger excitation optical beams and facilitating optical alignment but also provides higher enhancement of photoacoustic signals than previously published results based on the common on-beam QEPAS under the same experimental conditions. A normalized noise equivalent absorption coefficient ( 1 σ ) of 5.9 × 10 9 cm 1 W Hz 1 2 was obtained for water vapor detection at normal atmospheric pressure.

© 2009 Optical Society of America

OCIS Codes
(140.3600) Lasers and laser optics : Lasers, tunable
(280.3420) Remote sensing and sensors : Laser sensors
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6430) Spectroscopy : Spectroscopy, photothermal

ToC Category:
Spectroscopy

History
Original Manuscript: January 6, 2009
Revised Manuscript: April 5, 2009
Manuscript Accepted: April 10, 2009
Published: May 14, 2009

Citation
Kun Liu, Xiaoyong Guo, Hongming Yi, Weidong Chen, Weijun Zhang, and Xiaoming Gao, "Off-beam quartz-enhanced photoacoustic spectroscopy," Opt. Lett. 34, 1594-1596 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-10-1594


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References

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