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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 6 — May. 25, 2012

T-shape microresonator-based high sensitivity quartz-enhanced photoacoustic spectroscopy sensor

Hongming Yi, Weidong Chen, Shanwen Sun, Kun Liu, Tu Tan, and Xiaoming Gao  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 9187-9196 (2012)

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A novel spectrophone sensor prototype consisting of a T-shaped acoustic microresonator (T-mR) in off-beam quartz-enhanced photoacoustic spectroscopy (T-mR QEPAS) is introduced for the first time. Its performance was evaluated and optimized through an acoustic model and experimental investigation via detection of water vapor in the atmosphere. The present work shows that the use of T-mR in QEPAS based sensor can improve the detection sensitivity by a factor of up to ~30, compared with that using only a bare QTF. This value is as high as that obtained in a conventional “on-beam” QEPAS, while keeping the advantages of “off-beam” QEPAS configuration: it is no longer necessary to couple excitation light beam through the narrow gap between the QTF prongs. In addition, the T-mR is really suitable for mass production with high precision.

© 2012 OSA

OCIS Codes
(230.0230) Optical devices : Optical devices
(280.3420) Remote sensing and sensors : Laser sensors
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6430) Spectroscopy : Spectroscopy, photothermal

ToC Category:

Original Manuscript: February 9, 2012
Revised Manuscript: March 28, 2012
Manuscript Accepted: March 28, 2012
Published: April 5, 2012

Virtual Issues
Vol. 7, Iss. 6 Virtual Journal for Biomedical Optics

Hongming Yi, Weidong Chen, Shanwen Sun, Kun Liu, Tu Tan, and Xiaoming Gao, "T-shape microresonator-based high sensitivity quartz-enhanced photoacoustic spectroscopy sensor," Opt. Express 20, 9187-9196 (2012)

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