Nonresonant background suppression in coherent anti-Stokes Raman scattering spectra of dissolved molecules

Gerald W. Lucassen; T. A. H. M. Scholten; Wim de Boey; Frits F. M. de Mul; Jan Greve

doi:10.1117/12.57302

1 May 1991 Nonresonant background suppression in coherent anti-Stokes Raman scattering spectra of dissolved molecules

Gerald W. Lucassen, T. A. H. M. Scholten, Wim de Boey, Frits F. M. de Mul, Jan Greve

Proceedings Volume 1403, Laser Applications in Life Sciences; (1991) https://doi.org/10.1117/12.57302
Event: Laser Applications in Life Sciences, 1990, Moscow, Russian Federation

Abstract

The Phase Mismatching CARS technique uses the nonresonant signal of the glass cuvette walls to coherently compensate the nonresonant signal of the sample yielding a method of measuring background free CARS spectra. The technique is especially suitable under (pre) resonant nditions where many molecular Raman vibrationsNend to have depolarization ratios p close to the nonresonant depolarization ratio p In comparison with the Polarization Sensitive CARS technique the Phase Mismatching technique has a higher net suppression ratio because of the lower loss of vibration resonant signal. The combination of the Phase mismatching and Polazation Sensitive CARS technique yields the possibility of direct measurements of XIjkl components and resolving overlapping bands with different depolarization ratios without an interfering nonresonant background. 1.

Citation Download Citation

Gerald W. Lucassen, T. A. H. M. Scholten, Wim de Boey, Frits F. M. de Mul, and Jan Greve "Nonresonant background suppression in coherent anti-Stokes Raman scattering spectra of dissolved molecules", Proc. SPIE 1403, Laser Applications in Life Sciences, (1 May 1991); https://doi.org/10.1117/12.57302

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