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Quantitative species concentration measurements using coherent anti-Stokes Raman spectroscopy with nonresonant susceptibility normalization

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Abstract

The nonlinear nature of coherent anti-Stokes Raman spectroscopy (CARS) leads to drift and shot-to-shot variations in signal strength making quantitative concentration measurements difficult. We report CARS measurements using polarization analysis to separate the anti-Stokes signal into predominantly Raman (resonant) and electronic (nonresonant) components for subsequent independent detection.

© 1985 Optical Society of America

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