Comparison of Laser-Induced Breakdown Spectra of Organic Compounds with Irradiation at 1.5 and 1.064 micrometers

A comprehensive investigation of laser-induced breakdown spectroscopy (LIBS) at 1.500 micrometers of residues of six organic compounds (anthracene, caffeine, glucose, 1,3-dinitrobenzene, 2,4-dinitrophenol, and 2,4-dinitrotoluene) on aluminum substrates is presented and compared with LIBS at the Nd:Y...

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Hauptverfasser:	Wong, Diane M, Dagdigian, Paul J
Format:	Report
Sprache:	eng
Schlagworte:	ALUMINUM ANTHRACENES Atomic and Molecular Physics and Spectroscopy BBO CRYSTALS BREAKDOWN(ELECTRONIC THRESHOLD) CAFFEINE CN RADICALS EMISSION EMISSION SPECTRA GLUCOSE INTENSITY IRRADIATION LASER APPLICATIONS LASER SPECTROSCOPY LASERS Lasers and Masers LIBS(LASER INDUCED BREAKDOWN SPECTROSCOPY) MOLECULAR PROPERTIES OPO(OPTICAL PARAMETRIC OSCILLATORS) Organic Chemistry ORGANIC COMPOUNDS SPECTRA SPECTROSCOPY SUBSTRATES Test Facilities, Equipment and Methods YAG LASERS YTTRIUM ALUMINUM GARNET
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Zusammenfassung:	A comprehensive investigation of laser-induced breakdown spectroscopy (LIBS) at 1.500 micrometers of residues of six organic compounds (anthracene, caffeine, glucose, 1,3-dinitrobenzene, 2,4-dinitrophenol, and 2,4-dinitrotoluene) on aluminum substrates is presented and compared with LIBS at the Nd:YAG fundamental wavelength of 1.064 micrometers. The overall emission intensities were found to be smaller at 1.500 micrometers than at 1:064 micrometers, and the ratios of C2 and CN molecular emissions to the H atomic emissions were observed to be less. Possible reasons for the observed differences in LIBS at 1.064 micrometers versus 1.500 micrometers are discussed. Published in Applied Optics, v47 n31 pG149-G157, 2008.