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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 19 — Sep. 12, 2011
  • pp: 18671–18677

Noncontact optical detection of explosive particles via photodissociation followed by laser-induced fluorescence

C. M. Wynn, S. Palmacci, R. R. Kunz, and M. Aernecke  »View Author Affiliations


Optics Express, Vol. 19, Issue 19, pp. 18671-18677 (2011)
http://dx.doi.org/10.1364/OE.19.018671


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Abstract

High-sensitivity (ng/cm2) optical detection of the explosive 2,4,6-trinitrotoluene (TNT) is demonstrated using photodissociation followed by laser-induced fluorescence (PD-LIF). Detection occurs rapidly, within 6 laser pulses (~7 ns each) at a range of 15 cm. Dropcasting is used to create calibrated samples covering a wide range of TNT concentrations; and a correspondence between fractional area covered by TNT and PD-LIF signal strength is observed. Dropcast data are compared to that of an actual fingerprint. These results demonstrate that PD-LIF could be a viable means of rapidly and remotely scanning surfaces for trace explosive residues.

© 2011 OSA

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.3420) Remote sensing and sensors : Laser sensors
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Sensors

History
Original Manuscript: June 23, 2011
Revised Manuscript: August 8, 2011
Manuscript Accepted: August 10, 2011
Published: September 9, 2011

Citation
C. M. Wynn, S. Palmacci, R. R. Kunz, and M. Aernecke, "Noncontact optical detection of explosive particles via photodissociation followed by laser-induced fluorescence," Opt. Express 19, 18671-18677 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-19-18671


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