Ultrafast dipole solvation measured in the far infrared

被引：50

作者：

McElroy, R

Wynne, K

机构：

[1] Femtosecond Research Centre, Department of Physics and Applied Physics, University of Strathclyde, Glasgow

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.79.3078

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ultrafast visible and near-UV pump, far-IR (terahertz) probe spectroscopy on the solvation dynamics of two dyes in polar solution is reported. In both cases, the pump pulse produces an excited state in the dye with a permanent dipole moment that is significantly different from that in the ground state. This dipole moment change induces changes in the solvent librational spectrum. Coherent beats in the data indicate that the solvent response is partially diffusive and partially impulsive demonstrating the inhomogeneity of the response.

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页码：3078 / 3081

页数：4

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