Photodissociation Followed by Laser-Induced Fluorescence at Atmospheric Pressure and 24 °C: A Unique Scheme for Remote Detection of Explosives
Applied Optics, Vol. 40, Issue 36, pp. 6677-6681 (2001)
http://dx.doi.org/10.1364/AO.40.006677
Acrobat PDF (121 KB)
Abstract
A unique scheme has been applied for sensitive remote detection of 2,4,6-trinitrotoluene (TNT) vapor trace amounts at atmospheric pressure and 24 °C. The detection concept is based on a single laser beam inducing a tandem process: photodissociation of TNT vapor followed by highly selective detection of its photofragments vibrationally excited NO, utilizing laser-induced fluorescence with the A2Σ+(v′ = 0) ← X2Π(v″ = 2) transition. A detection sensitivity of at least 8 parts in 109 of TNT vapor with a signal-to-noise ratio of approximately 10 has been experimentally verified for an unfocused ~5-mJ laser beam, measured at a distance of ~15 cm from the TNT sample.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.3420) Remote sensing and sensors : Laser sensors
(300.2530) Spectroscopy : Fluorescence, laser-induced
Citation
Talya Arusi-Parpar, Dov Heflinger, and Raphael Lavi, "Photodissociation Followed by Laser-Induced Fluorescence at Atmospheric Pressure and 24 °C: A Unique Scheme for Remote Detection of Explosives," Appl. Opt. 40, 6677-6681 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-36-6677
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Development of a Photofragmentation Laser-Induced-Fluorescence Laser Sensor for Detection of 2, 4, 6-Trinitrotoluene in Soil and Groundwater (AO)
- Disturbance of laser-induced-fluorescence measurements of NO in methane-air flames containing chlorinated species by photochemical effects induced by 225-nm-laser excitation (AO)
- Detection of condensed-phase explosives via laser-induced vaporization, photodissociation, and resonant excitation (AO)
- Noncontact detection of homemade explosive constituents via photodissociation followed by laser-induced fluorescence (OE)
- Noncontact optical detection of explosive particles via photodissociation followed by laser-induced fluorescence (OE)
Related Conference Papers
- Recent advances in quartz-enhanced gas-phase photoacoustic spectroscopy
- Laser-induced fluorescence real-time sensing of trace plastics and dissolved organic compounds in water/seawater
- Role of model complexity on the prediction of nitric oxide LIF spectra
- Laser induced fluorescence and incandescence measurements in soot-reduced opposed flow heptane/air flames
- Detection of explosives and explosive-related compounds by ultraviolet cavity ring-down spectroscopy
« Previous Article | Next Article »
OSA is a member of 