Ultrafast vibrational dephasing of liquid water - art. no. 027401

Authors
Stenger, J Madsen, D Hamm, P Nibbering, ETJ Elsaesser, T
Citation
J. Stenger et al., Ultrafast vibrational dephasing of liquid water - art. no. 027401, PHYS REV L, 8702(2), 2001, pp. 7401-NIL_95
Citations number
25
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
8702
Issue
2
Year of publication
2001
Pages
7401 - NIL_95
Database
ISI
SICI code
0031-9007(20010709)8702:2<7401:UVDOLW>2.0.ZU;2-F
Abstract
We present the first infrared photon echo study of liquid water. For the O- H stretch vibration of HDO in D2O, femtosecond four-wave mixing experiments reveal an extraordinary short pure dephasing time T-2* on the order of 90 fs. This unusually fast time scale of dephasing is rationalized by taking i nto account the large anharmonicity of the hydrogen bonded O-H stretching m ode.