Vibrational multilevel quantum coherence due to anharmonic couplings in intermolecular hydrogen bonds

被引：43

作者：

Huse, N ^{[1
]}

Heyne, K ^{[1
]}

Dreyer, J ^{[1
]}

Nibbering, ETJ ^{[1
]}

Elsaesser, T ^{[1
]}

机构：

[1] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.91.197401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Femtosecond three-pulse photon-echo studies of acetic acid dimers in solution reveal multilevel coherence of O-H stretching excitations caused by the anharmonic coupling between the high-frequency stretching and low-frequency hydrogen-bond motions. We demonstrate for the first time that such multilevel coherence determines the nonexponential decay of the macroscopic O-H stretching polarization, whereas spectral diffusion processes play a minor role. The dephasing time of individual vibrational transitions contributing to the overall polarization is approximately 200 fs.

引用

页码：197401/1 / 197401/4

页数：4

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