Two-dimensional time-frequency ultrafast infrared vibrational echo spectroscopy

被引：87

作者：

Merchant, KA ^{[1
]}

Thompson, DE ^{[1
]}

Fayer, MD ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.86.3899

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

2D spectrally resolved ultrafast (< 200 fs) IR vibrational echo experiments were performed on Rh(CO)(2)acac [(acetylacetonato)dicarbonylrhodium (I)]. The 2D spectra display features that reflect the 0-1 and 1-2 transitions and the combination band transition of the symmetric (S) and antisymmetric (A) CO stretching modes. Three oscillations in the data arise from the frequency difference between the S and A modes (quantum beats) and the,C and A anharmonicities. A new explanation is given for these "anharmonic" oscillations. Calculations show that spectral resolution enables the 0-1 and 1-2 dephasing to be measured independently.

引用

页码：3899 / 3902

页数：4

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