Abstract
2D spectrally resolved ultrafast IR vibrational echo experiments were performed on [(acetylacetonato)dicarbonylrhodium ]. The 2D spectra display features that reflect the 0-1 and 1-2 transitions and the combination band transition of the symmetric and antisymmetric CO stretching modes. Three oscillations in the data arise from the frequency difference between the and modes (quantum beats) and the and 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.
- Received 15 September 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.3899
©2001 American Physical Society