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    Interferometric coherent Raman spectroscopy with incoherent light: Some applications (1994)
    Springer
    Details
    Publication Date: 1994-10-01
    Print ISSN: 0946-2171
    Electronic ISSN: 1432-0649
    Topics: Physics
    Published by Springer
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  • 2
    Electronic Resource
    Electronic Resource
    Interferometric coherent Raman spectroscopy with incoherent light: Some applications (1994)
    Springer
    Applied physics 59 (1994), S. 377-387 
    Details
    ISSN: 1432-0649
    Keywords: 42.65.Dr ; 33.20.Fb
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The theory of Interferometric Coherent Raman Scattering (ICRS) using “twin” broadband fields has recently been extended to include both resonant and nonresonant contributions to the signal. It is reviewed here. Valid for both ICARS and ICSRS, it is applied to new ICARS experiments on neat toluene and on alcoholic solutions of a methine dye. In each case the damped Rabi Detuning Oscillations (RDO), that are characteristic of ICRS, lead directly to vibrational frequencies and their dephasing times. The theory is also applied as a new way to determine the ratio of the nonresonant to resonant hyperpolarizabilities, accurately for toluene, and approximately for the methine dye solution whose (vibrationally) “nonresonant” contribution is negative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081060
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  • 3
    Electronic Resource
    Electronic Resource
    Interferometric coherent Raman spectroscopy: Resonant and non-resonant contributions (1994)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 25 (1994), S. 545-555 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The theory of the recently discovered interferometric coherent Raman spectroscopy (ICRS) is extended to explicitly include terms resulting from non-resonant contributions to the overall non-linear susceptibility. The derived expression is applicable to both interferometric coherent anti-Stokes Raman spectroscopy (ICARS) and interferometric coherent Stokes Raman spectroscopy (ICSRS) and can be applied to both neat solutions and binary mixtures. It is shown that the total description of ICRS must include a resonant term, a non-resonant term and a resonant-non-resonant cross-term, each of which exhibits analytically unique behavior in time-domain ICRS experiments. From the complete expression one can extract relative strengths of the resonant and non-resonant molecular hyperpolarizabilities. Resonant hyperpolarizabilities thus obtained may be used to determine absolute Raman cross-sections, without making absolute measurements. Conversely, for a sample for which the absolute Raman cross-section is independently known, one can determine the value of the non-resonant hyperpolarizability.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250250716
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  • 4
    Electronic Resource
    Electronic Resource
    Study of polarization CRS and polarization ICRS with application to benzena (1995)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 26 (1995), S. 889-899 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Passage from the microscopic third-order optical polarizability tensor to the macroscopic third-order susceptibility tensor elements in coherent Raman scattering (CRS: CARS and CSRS) is reviewed with appropriate orientation averaging for an isotropic medium. The results are applied to existing polarized CARS measurements for the 991 cm-1 vibration in benzene as a neat liquid [M. D. Levenson and N. Bloembergen, J. Chem. Phys. 60, 1323 (1974)] and also to new polarized interferometric data on the same system from a method called interferometric coherent Raman spectroscopy (ICRS; ICSRS in particular is used). Lineshape analysis of the CARS spectra seen in both the ZXXZ polarization (mildly dispersive) and the ZZZZ polarization (strongly dispersive) leads to ratios for the non-resonant to resonant parts of the corresponding susceptibility elements. Thus XzxxzN/XzxxzR = 0.5 (from 0.3-1.7) (a new result) and XzxxzN/XzxxzR = 0.042 + 0.002 (from Levenson and Bloembergen). It is shown that given one ratio, the second must be completely determined by the depolarization ratio from conventional Raman scattering. These same tensor element ratios are incorporated into ICSRS theory to produce polarized interferograms which qualitatively confirm the strikingly different patterns seen in the ZXXZ and ZZZZ polarized ICSRS experiments. On the quantitative level, agreement is less satisfactory.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250260841
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