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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 13 — May. 1, 2013
  • pp: 3027–3030

Detection of nitrogen dioxide using an external modulation diode laser

Yong Yang, Zhihui Gao, Dehui Zhong, and Weihao Lin  »View Author Affiliations


Applied Optics, Vol. 52, Issue 13, pp. 3027-3030 (2013)
http://dx.doi.org/10.1364/AO.52.003027


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Abstract

We describe a nitrogen dioxide (NO2) detecting technique based on external modulation and correlation detection using a diode laser operating at 445 nm. The technique is suitable for real-time monitoring of nitrogen dioxide concentration because of its straightforward data evaluation, restraining noises, and a low degree of complexity. Measurements of concentrations of nitrogen dioxide have been carried out at room temperature and atmospheric pressure. The absorption signals have been extracted through the correlation detection technique and evaluated by a least-squares method. The results suggest a detection limit of 5 ppm using a 20 cm long gas cell with 100 ms integration time.

© 2013 Optical Society of America

OCIS Codes
(280.3420) Remote sensing and sensors : Laser sensors
(300.1030) Spectroscopy : Absorption
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: January 29, 2013
Revised Manuscript: March 26, 2013
Manuscript Accepted: March 27, 2013
Published: April 24, 2013

Citation
Yong Yang, Zhihui Gao, Dehui Zhong, and Weihao Lin, "Detection of nitrogen dioxide using an external modulation diode laser," Appl. Opt. 52, 3027-3030 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-13-3027

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