Abstract
Using optical pulses shorter than a vibrational period it is possible to impulsively excite vibrational motion in molecules.1-3 We have used 6 femtosecond optical pulses to resonantly and impulsively excite the entire vibronic manifold for the S0 to S1 transition in an organic molecule in solution. Virtualy all the vibrational modes which are Franck-Condon connected to the ground state are excited in a time short compared to the vibrational periods. This prepares the molecule in a coherent superposition of vibrational states or wavepacket.
© 1989 Optical Society of America
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