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Fast extraction of resonant vibrational response from CARS spectra with arbitrary nonresonant background
Author(s) -
Liu Yuexin,
Lee Young Jong,
Cicerone Marcus T.
Publication year - 2009
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2217
Subject(s) - raman spectroscopy , spectral line , computation , a priori and a posteriori , raman scattering , fourier transform , computational physics , coherent anti stokes raman spectroscopy , range (aeronautics) , physics , optics , extraction (chemistry) , chemistry , computer science , algorithm , materials science , quantum mechanics , philosophy , epistemology , chromatography , composite material
We describe a new, robust method of numerically extracting equivalent Raman spectra from coherent anti‐Stokes Raman scattering (CARS) spectra. The extraction procedure requires no a priori information regarding the vibrational resonances or the shape of the nonresonant background (NRB). The method we present here is robust to situations where the NRB is not spectrally flat, and is accurate over a wide range of signal‐to‐background ratios. This simple and quick computation method, which relies primarily on a small number of fast Fourier transforms, could reasonably be used in conjunction with spectral imaging, where millions of spectra must be analyzed. Published 2009 by John Wiley & Sons, Ltd.