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Adapting Raman Spectra from Laboratory Spectrometers to Portable Detection Libraries

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Raman spectral data collected with high-resolution laboratory spectrometers are processed into a format suitable for importing as a user library on a 1064 nm DeltaNu first generation, field-deployable spectrometer prototype. The two laboratory systems used are a 1064 nm Bruker Fourier transform (FT)-Raman spectrometer and a 785 nm Kaiser dispersive spectrometer. The steps taken to adapt for device-dependent spectral resolution, wavenumber shifts between instruments, and relative intensity response are described. Effects due to the differing excitation laser wavelengths were found to be minimal, indicating—at least for the near-infrared (NIR)—that data can be ported between different systems, so long as certain measures are taken with regard to the reference and field spectra.

Keywords: Explosives Detection; Fluorescence; Intensity correction; Portable; Raman libraries; Raman spectroscopy; Spectral Database; Wavenumber calibration

Document Type: Research Article


Affiliations: Battelle Memorial Institute, 2900 Fire Road, Egg Harbor Township, NJ 08234 USA

Publication date: February 1, 2013

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