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Rational design of fiber-optic probes for visible and pulsed-ultraviolet resonance Raman spectroscopy

TitleRational design of fiber-optic probes for visible and pulsed-ultraviolet resonance Raman spectroscopy
Publication TypeJournal Article
Year of Publication1996
AuthorsGreek, LS, Schulze, HG, Haynes, CA, Blades, MW, Turner, RFB
JournalApplied Optics
Volume35
Pagination4086-4095
Date PublishedJul
Type of ArticleProceedings Paper
ISBN Number0003-6935
KeywordsAROMATIC-AMINO-ACIDS, EFFECTIVE DEPTH, fiber-optic probes, LASER EXCITATION, numerical modeling of, optical fibers, OPTIMIZATION, Raman spectroscopy, remote Raman, resonance Raman spectroscopy, SCATTERING, sensors, SPECTROSCOPY
Abstract

The investigated the performance of fiber-optic resonance Raman probes with a series of experiments to determine the working curves of such probes using model analytes and to investigate the effects of absorbing media. A computer model designed to simulate these experiments is presented, and numerical results are found to be in agreement with the experimental data. Design considerations resulting from these studies are discussed, and novel designs for overcoming problems of coupling efficiency, damage threshold, and sensitivity in absorbing samples are presented. These findings are applied to the design of fiber-optic probes for ultraviolet resonance Raman spectroscopy involving nanosecond pulsed-ultraviolet excitation (225 and 266 nm). These probes have been used to collect what is, to our knowledge, the first reported fiber-optic-linked ultraviolet resonance Raman spectra of tryptophan and DNA. (C) 1996 Optical Society of America

URL<Go to ISI>://A1996VA60800014