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Early dynamics of guest-host interaction in dye-doped liquid crystalline materials
Thai V Truong1, Lei Xu, Y R Shen
1Department of Physics, University of California, Berkeley, California 94720, USA.
Physical Review Letters
|June 6, 2003
Abstract:
We have studied in detail the early dynamics of laser-induced molecular reorientation in a dye-doped liquid crystalline (LC) medium that exhibits a significant enhancement of the optical Kerr nonlinearity due to guest-host interaction. Experimental results agree quantitatively with theory based on a model in which the anisotropic dye excitation helps reorient the LC molecules through a mean-field intermolecular interaction.