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Proceedings Paper

Tunable multi-wavelength resonance-Raman detection of bacteria and chemicals in complex environments
Author(s): Jacob Grun; Jeffrey Bowles; David Gillis; Pratima Kunapareddy; Robert Lunsford; Charles K. Manka; Sergei Nikitin; Zheng Wang
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Paper Abstract

We are developing tunable-multi-wavelength resonance-Raman spectroscopy and algorithms to enable rapid detection and identification of bacteria and chemicals in complex environments. The system, dubbed SWOrRD, is capable of illuminating a sample containing many chemicals or biological agents with a sequence of laser wavelengths between 210nm and 2000nm; a range which encompasses the resonant frequencies of cells, microorganisms, cellular metabolites, and many chemicals; and measures the resonance-Raman spectra of light scattered from the sample at each laser wavelength. These multiple spectra, which contain much more information about the bond structure that is contained in a single spectrum, are analyzed by a linear-mixture algorithm, based on NRL's ORASIS, to determine the chemical and bacteriological constituents of the sample. The current status of the research will be described.

Paper Details

Date Published: 4 May 2010
PDF: 12 pages
Proc. SPIE 7687, Active and Passive Signatures, 768706 (4 May 2010); doi: 10.1117/12.863209
Show Author Affiliations
Jacob Grun, Naval Research Lab. (United States)
Jeffrey Bowles, Naval Research Lab. (United States)
David Gillis, Naval Research Lab. (United States)
Pratima Kunapareddy, Research Support Instruments, Inc. (United States)
Robert Lunsford, Research Support Instruments, Inc. (United States)
Charles K. Manka, Research Support Instruments, Inc. (United States)
Sergei Nikitin, Research Support Instruments, Inc. (United States)
Zheng Wang, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 7687:
Active and Passive Signatures
G. Charmaine Gilbreath; Chadwick T. Hawley, Editor(s)

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