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
收藏
页码：3899 / 3902
页数：4
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