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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