Applied Optics · 1978 · 23 citations · 7 references
Natural SciencesChemistryAnalytical ChemistrySpectroscopic AnalysisSpectroscopyAbsorption SpectroscopyAtmospheric AbsorptionInfrared SpectroscopyLaser OpticsLaser SpectroscopyOptical SpectroscopyAbsorption SpectraExplosive PerformanceExplosive Vapor AnalysisInfrared Absorption SpectraInfrared Laser SpectroscopyMolecular Absorption FeaturesOptical Absorption CoefficientPhoton Detection Sensitivity
Optoacoustic absorption spectra, using a CO(2) laser source, is reported for ethylene glycol dinitrate, 2, 4 dinitrotoluene, and nitrogylcerine vapors in a nitrogen background. Strong absorption was measured at all seventy-seven laser transitions in the 9.6-microm and 10.6-microm regions. Absorption coefficient data, necessary to evaluate performance as an explosive detector, were obtained for ethylene glycol dinitrate. The strongest feature showed a value of 7.42 atm(-1) cm(-1) giving a minimum detection sensitivity of 8.26 ppb W.
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Optimal optoacoustic detector design
L.-G. Rosengren · Applied Optics · 1975 · 118 citations
Water vapor absorption of carbon dioxide laser radiation
M. S. Shumate, Robert T. Menzies, J. S. Margolis et al. · Applied Optics · 1976 · 81 citations