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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 4 — Feb. 1, 2009
  • pp: B17–B22

Standoff and arms-length detection of chemicals with single-beam coherent anti-Stokes Raman scattering

Haowen Li, D. Ahmasi Harris, Bingwei Xu, Paul J. Wrzesinski, Vadim V. Lozovoy, and Marcos Dantus  »View Author Affiliations


Applied Optics, Vol. 48, Issue 4, pp. B17-B22 (2009)
http://dx.doi.org/10.1364/AO.48.000B17


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Abstract

The detection of chemicals from safe distances is vital in environments with potentially hazardous or explosive threats, where high sensitivity and fast detection speed are needed. Here we demonstrate standoff detection of several solids, liquids, and gases with single-beam coherent anti-Stokes Raman scattering. This approach utilizes a phase coherent ultrabroad-bandwidth femtosecond laser to probe the fundamental vibrations that constitute a molecule’s fingerprint. Characteristic Raman lines for several chemicals are successfully obtained from arms-length and 12 m standoff distances. The sensitivity and speed of this approach are also demonstrated.

© 2008 Optical Society of America

OCIS Codes
(300.6230) Spectroscopy : Spectroscopy, coherent anti-Stokes Raman scattering
(320.5540) Ultrafast optics : Pulse shaping
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

History
Original Manuscript: July 17, 2008
Manuscript Accepted: September 5, 2008
Published: October 16, 2008

Citation
Haowen Li, D. Ahmasi Harris, Bingwei Xu, Paul J. Wrzesinski, Vadim V. Lozovoy, and Marcos Dantus, "Standoff and arms-length detection of chemicals with single-beam coherent anti-Stokes Raman scattering," Appl. Opt. 48, B17-B22 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-4-B17

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