Abstract

A sharp resonant amplification of the third-order susceptibility of a diluted β-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.

© 1992 Optical Society of America

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