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  • 1
    Electronic Resource
    Electronic Resource
    Thermal Raman shift of the C60 tangentialA g mode (1995)
    Springer
    Applied physics 61 (1995), S. 171-175 
    Details
    ISSN: 1432-0630
    Keywords: 07.65 ; 65.00
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Fullerence C60 exhibits a continuous and reversibleA g (2) mode softening from 1469 to 1459 cm−1, which is linear with laser power up to 21.9 kW/cm2 for C60 crystals under vacuum. Model calculations taking into account the temperature distribution that is induced by the Gaussian intensity profile of the laser beam reproduce the measured frequency shifts. A thermal conductivity of microcrystalline fullerene of 0.27(±0.03) W/mK is derived from this numerical analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538385
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dispersion of the third-order susceptibility of a cyanine dye measured by coherent anti-Stokes Raman scattering (1996)
    Springer
    Applied physics 63 (1996), S. 641-647 
    Details
    ISSN: 1432-0649
    Keywords: 42.65.An ; 42.65.Dr ; 42.70.Jk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The dispersion of the third-order susceptibility of the cyanine dye bis-(dimethylamino)-heptamethinium chloride was measured by Coherent Anti-Stokes Raman Scattering (CARS) over a wide wavelength range from 530 to 830 nm. Large negative values of the real part of the second-order hyperpolarizability are observed. The data are analyzed with the help of theoretical calculations based on a perturbative approach for the nonlinearities. The dispersion behavior of the third-order susceptibility is governed by the resonant enhancement due to vibrational transitions of the first excited electronic state and, to lesser extent, by an electronic two-photon resonance around 600 nm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01831006
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    Paper (German National Licenses)
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