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    Characteristics of picosecond coherent anti-Stokes Raman spectroscopy with mode-locked dye lasers in comparison with stimulated Raman gain

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    DeMaziere(1990a).pdf (1.690Mb)
    Authors
    De Mazière, M.
    Baggen, M.
    Van Exter, M.
    Lagendijk, A.
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    Discipline
    Physical sciences
    Audience
    Scientific
    Date
    1990
    Metadata
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    Description
    Time-resolved coherent anti-Stokes Raman scattering (CARS) has been performed with a double synchronously pumped mode-locked dye-laser system that is the same as had been used earlier for stimulated Raman gain (SRG) experiments; the CARS signal is also spectrally resolved. We present an extensive experimental and theoretical study of the CARS technique and compare the results with the characteristics of SRG. Experimental tests have been performed on the 656- and 991-cm−1 modes in liquid CS2 and C6H6, respectively. In particular, the influence of the pulse chirps on the time resolutions in CARS and SRG has been examined. SRG profits from oppositely chirped dye-layer pulses. In these circumstances, the observed time resolution in SRG is typically a factor of 3 better than in CARS. Also, when measured under off-resonance conditions, CARS decay curves exhibit a narrow and pronounced coherence spike that is symmetrical near zero delay: its appearance is discussed in detail. In addition, we establish the conditions for which the phenomena, of critical frequency mistuning and spectral narrowing in time-delayed CARS are observable.
    Citation
    De Mazière, M.; Baggen, M.; Van Exter, M.; Lagendijk, A. (1990). Characteristics of picosecond coherent anti-Stokes Raman spectroscopy with mode-locked dye lasers in comparison with stimulated Raman gain. , Journal of the Optical Society of America B, Vol. 7, Issue 5, 726-738, DOI: 10.1364/JOSAB.7.000726.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/5730
    doi: http://dx.doi.org/10.1364/JOSAB.7.000726
    scopus: 2-s2.0-84975652724
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
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