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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 4 — Feb. 15, 2011
  • pp: 481–483

Application of a broadband blue laser diode to trace NO 2 detection using off-beam quartz-enhanced photoacoustic spectroscopy

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

Optics Letters, Vol. 36, Issue 4, pp. 481-483 (2011)

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We applied for the first time, to our knowledge, broadband off-beam quartz-enhanced photoacoustic spectroscopy (BB-OB-QEPAS) to trace NO 2 detection using a broadband blue laser diode centered at 450 nm . A detection limit of 18 ppbv (parts in 10 9 by volume) for NO 2 in N 2 at atmospheric pressure was achieved with an average laser power of 7 mW at a 1 s integration time, which corresponds to a 1 σ normalized noise equivalent absorption coefficient of 4.1 × 10 9 cm 1 W / Hz 1 / 2 . An Allan variance analysis was performed to investigate the long-term stability of the BB-OB-QEPAS-based NO 2 sensor.

© 2011 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:
Remote Sensing

Original Manuscript: September 16, 2010
Revised Manuscript: November 22, 2010
Manuscript Accepted: November 29, 2010
Published: February 4, 2011

Virtual Issues
Vol. 6, Iss. 3 Virtual Journal for Biomedical Optics

Hongming Yi, Kun Liu, Weidong Chen, Tu Tan, Lei Wang, and Xiaoming Gao, "Application of a broadband blue laser diode to trace NO2 detection using off-beam quartz-enhanced photoacoustic spectroscopy," Opt. Lett. 36, 481-483 (2011)

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