Spectrally resolved femtosecond two-color three-pulse photon echoes: study of ground and excited state dynamics in molecules.
We report the use of spectrally resolved femtosecond two-color three-pulse photon echoes as a potentially powerful multidimensional technique for studying vibrational and electronic dynamics in complex molecules. The wavelengths of the pump and probe laser pulses are found to have a dramatic effect on the spectrum of the photon echo signal and can be chosen to select different sets of energy levels in the vibrational manifold, allowing a study of the dynamics and vibrational splitting in either the ground or the excited state. The technique is applied to studies of the dynamics of vibrational electronic states in the dye molecule Rhodamine 101 in methanol.
Van Dao
Lap
L
Centre for Atom Optics and Ultrafast Spectroscopy, School of Biophysical Sciences and Electrical Engineering, Swinburne University of Technology, Melbourne, Australia 3122. dvlap@swin.edu.au
Lincoln
Craig
C
Lowe
Martin
M
Hannaford
Peter
P