Excitation intensity and polarization effects in the picosecond spectroscopy of molecular aggregates

Edward L. Quitevis; Miin-Liang Horng

doi:10.1117/12.17900

1 April 1990 Excitation intensity and polarization effects in the picosecond spectroscopy of molecular aggregates

Edward L. Quitevis, Miin-Liang Horng

Proceedings Volume 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World; (1990) https://doi.org/10.1117/12.17900
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

The optical dynamics of J-aggregates of 1,1'-diethyl-2,2'-cyanine in solution and adsorbed on 4-nm-diameter colloidal silica particles has been studied by using picosecond polarized pump-probe spectroscopy. The absorption anisotropy and the excitation-intensity dependence of the ground-state recovery kinetics are compared in these two systems. The results are discussed in terms of the dynamics of delocalized and localized excitons.

Citation Download Citation

Edward L. Quitevis and Miin-Liang Horng "Excitation intensity and polarization effects in the picosecond spectroscopy of molecular aggregates", Proc. SPIE 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World, (1 April 1990); https://doi.org/10.1117/12.17900

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