Villagrán-Muníz, M., authorGarcía-Segundo, C., authorMarconi, Mario Carlo, authorTorga, J., authorElsevier Science B. V., publisher2007-01-032007-01-032001Torga, J., et al., Ultra-Fast Dynamics in Coumarin 153 Obtained by Differential Fluorescence, Optics Communications 195, no. 1-4 (1 August 2001): [215]-219.http://hdl.handle.net/10217/67863We present measurements of the molecular rotational diffusion dynamics in the picosecond scale in a Coumarin 153 ethylene-glycol solution. A novel technique is used in which the fluorescent sample is excited with two femtosecond laser pulses in a pump and probe scheme. The spatial anisotropy generated by the first pulse excitation is sampled as a function of delay time through the fluorescence produced by the delayed pulse. The rotational time is obtained from the change in the fluorescence produced as a function of the delay time.born digitalarticleseng©2001 Elsevier Science B. V.Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.time-resolved fluorescencerotational diffusion timerotational depolarizationText