Spectrally resolved three pulse photon echoes in the vibrational infrared

被引：73

作者：

Asplund, MC ^{[1
]}

Lim, M ^{[1
]}

Hochstrasser, RM ^{[1
]}

机构：

[1] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 323卷 / 3-4期

基金：

美国国家卫生研究院; 美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(00)00496-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Spectrally resolved vibrational photon echo measurements of the N-3(-) ion in D2O and carbonmonoxy hemoglobin in D2O have been made using 100 fs infrared pulses in the 1800-2100 cm(-1) region. These measurements allow the separation of contributions from different Feynman pathways to the echo signal, allowing comparisons of the time dependence and correlation functions for the 1-0 and 2-1 coherence terms. The spectra show good agreement with a theoretical description of the data fitted to previously determined multiexponential correlation functions. Fluctuations in the anharmonicity are found to be negligible for HbCO when the harmonic vibrational relaxation model is used. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：269 / 277

页数：9

共 32 条

[1] Wavelength-resolved stimulated photon echoes: Direct observation of ultrafast intramolecular vibrational contributions to electronic dephasing [J].