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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 4 — Feb. 1, 2007
  • pp: 620–627

Detection of vapors of explosives and explosive-related compounds by ultraviolet cavity ringdown spectroscopy

Christopher Ramos and Paul J. Dagdigian  »View Author Affiliations


Applied Optics, Vol. 46, Issue 4, pp. 620-627 (2007)
http://dx.doi.org/10.1364/AO.46.000620


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Abstract

The detection of vapors of dinitrobenzenes and dinitrotoluenes by UV cavity ringdown spectroscopy (CRDS) was investigated. Absorption cross sections at 248 n m were estimated by measurements on saturated vapors and compared with solution-phase values. The computed subparts per 109 detection sensitivity with no effort at preconcentration was demonstrated through measurements on diluted flows. The factors affecting measurements on 1 atm total pressure were considered, and it was demonstrated that Rayleigh scattering by air will reduce the detection sensitivity by 5%–10%. The UV absorption spectra of these compounds are broad, resulting in a relatively poor selectivity for single-wavelength measurements with the UV CRDS technique.

© 2007 Optical Society of America

OCIS Codes
(280.3420) Remote sensing and sensors : Laser sensors
(300.1030) Spectroscopy : Absorption
(300.6390) Spectroscopy : Spectroscopy, molecular

ToC Category:
Spectroscopy

History
Original Manuscript: June 19, 2006
Revised Manuscript: September 15, 2006
Manuscript Accepted: September 26, 2006

Citation
Christopher Ramos and Paul J. Dagdigian, "Detection of vapors of explosives and explosive-related compounds by ultraviolet cavity ringdown spectroscopy," Appl. Opt. 46, 620-627 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-4-620


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