A sharp resonant amplification of the third-order susceptibility of a diluted beta-carotene solution in dodecane is observed by means of the time-resolved optical Kerr effect when the wavelength of the probe is tuned in the range of 490-570 nm. The resonance is well in the red with respect to the 0-0 first electronic transition; some evidence is given of the possible role of higher excited states and of two-photon resonance.
Resonance-enhanced time-resolved optical Kerr effect of β-carotene in solution / P. Foggi; V.F. Kamalov; R. Righini; R. Torre. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 17:(1992), pp. 775-777.
Resonance-enhanced time-resolved optical Kerr effect of β-carotene in solution
RIGHINI, ROBERTO;TORRE, RENATO
1992
Abstract
A sharp resonant amplification of the third-order susceptibility of a diluted beta-carotene solution in dodecane is observed by means of the time-resolved optical Kerr effect when the wavelength of the probe is tuned in the range of 490-570 nm. The resonance is well in the red with respect to the 0-0 first electronic transition; some evidence is given of the possible role of higher excited states and of two-photon resonance.
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