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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 6 — Mar. 15, 2006
  • pp: 823–825

Sub-part-per-billion monitoring of nitric oxide by use of wavelength modulation spectroscopy in combination with a thermoelectrically cooled, continuous-wave quantum cascade laser

B. W.M. Moeskops, S. M. Cristescu, and F. J.M. Harren  »View Author Affiliations


Optics Letters, Vol. 31, Issue 6, pp. 823-825 (2006)
http://dx.doi.org/10.1364/OL.31.000823


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Abstract

We used a thermoelectrically cooled, continuous-wave, quantum cascade laser operating between 1847 and 1854 cm 1 in combination with wavelength modulation spectroscopy for the detection of nitric oxide (NO) at the sub-part-per-billion by volume (ppbv) level. The laser emission overlaps the P 7.5 doublet of NO centered around 1850.18 cm 1 . Using an astigmatic multiple-pass absorption cell with an optical path length of 76 m , we achieved a detection limit of 0.2 ppbv at 10 kPa , with a total acquisition time of 30 s . The corresponding minimal detectable absorption is 8.8 × 10 9 cm 1 Hz 1 2 .

© 2006 Optical Society of America

OCIS Codes
(280.1120) Remote sensing and sensors : Air pollution monitoring
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:
Remote Sensing

History
Original Manuscript: November 18, 2005
Revised Manuscript: December 13, 2005
Manuscript Accepted: December 13, 2005

Citation
B. W. M Moeskops, S. M. Cristescu, and F. J. M Harren, "Sub-part-per-billion monitoring of nitric oxide by use of wavelength modulation spectroscopy in combination with a thermoelectrically cooled, continuous-wave quantum cascade laser," Opt. Lett. 31, 823-825 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-6-823

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