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Interference effects in the intensity of coherent anti‐stokes Raman scattering in thin samples
Author(s) -
Kukk Peeter
Publication year - 1992
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.1250230904
Subject(s) - interference (communication) , raman scattering , raman spectroscopy , coherent backscattering , optics , intensity (physics) , thin film , coherent anti stokes raman spectroscopy , spectral line , scattering , chemistry , molecular physics , materials science , analytical chemistry (journal) , physics , nanotechnology , quantum mechanics , telecommunications , channel (broadcasting) , computer science , chromatography
The interference effects on the intensity of coherent anti‐Stokes Raman scattering (CARS) in thin samples of high optical quality were shown to be determined by the interference in the sample of the four lightwaves active in this non‐linear four‐wave mixing process. In the calculation of the contrast factor in the linear and non‐linear interference spectra, the optical inhomogeneities of real samples were also taken into consideration. Theoretical equations were derived which describe well the experimentally measured CARS interference spectra of thin (0.14 mm) glass. However, in the case of thin anthracene monocrystalline flakes with optical inhomogeneities, a discrepancy between the theoretical calculations and experimental data was found.