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Multicolor IR Spectroscopy on Pure Liquid Water

Dan Cringus, Maxim S. Pshenichnikov, Douwe A. Wiersma, Maxim Mostovoy, Jörg Lindner, and Peter Vöhringer

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Abstract

Multicolor infrared ultrafast spectroscopy is applied to investigate the vibrational relaxation dynamics in liquid water at room temperature with both the stretching and the bending mode being photoexcited and probed. A unified model, capable of the reproduction of as much as 150 transients, yielded cross-sections and relaxation times for the stretching and bending modes. It is demonstrated, that the energy from the initially excited stretching vibration is partitioned to the bending modes of approximately two water molecules.

© 2006 Optical Society of America

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