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Dynamical intensity borrowing in porphyrin J-aggregates revealed by sub-5-fs spectroscopy

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Abstract

We observed coherent molecular vibration coupled to the Frenkel exciton in J-aggregates. The coherent oscillation in the induced absorbance change is explained by the modulation of the transition dipole moment through the 244cm− 1-ruffling mode.

© 2000 Optical Society of America

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