Coherent mode-selective Raman excitation towards standoff detection

Coherent mode-selective Raman excitation towards standoff detection

We report the detection of characteristic Raman lines for several chemicals using a single-beam coherent anti-Stokes Raman scattering (CARS) technique from a 12 meter standoff distance. Single laser shot spectra are obtained with sufficient signal to noise ratio to allow molecular identification. Ba...

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Veröffentlicht in:Optics express 2008-04, Vol.16 (8), p.5499
Hauptverfasser: Li, Haowen, Harris, D Ahmasi, Xu, Bingwei, Wrzesinski, Paul J, Lozovoy, Vadim V, Dantus, Marcos
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Sprache:eng
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Algorithms
Environmental Monitoring - methods
Lasers
Mass Spectrometry - methods
Spectrum Analysis, Raman - methods
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container_issue 8
container_start_page 5499
container_title Optics express
container_volume 16
creator Li, Haowen
Harris, D Ahmasi
Xu, Bingwei
Wrzesinski, Paul J
Lozovoy, Vadim V
Dantus, Marcos
description We report the detection of characteristic Raman lines for several chemicals using a single-beam coherent anti-Stokes Raman scattering (CARS) technique from a 12 meter standoff distance. Single laser shot spectra are obtained with sufficient signal to noise ratio to allow molecular identification. Background and spectroscopic discrimination are achieved through binary phase pulse shaping for optimal excitation of a single vibrational mode. These results provide a promising approach to standoff detection of chemicals, hazardous contaminants, and explosives.
doi_str_mv 10.1364/OE.16.005499
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source MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Algorithms
Environmental Monitoring - methods
Lasers
Mass Spectrometry - methods
Spectrum Analysis, Raman - methods
title Coherent mode-selective Raman excitation towards standoff detection
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