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A theoretical study of the resonance optical response of assemblies oforiented short (as compared to an optical wavelength) linear Frenkel chains iscarried out using a two-level model. We show that both transmittivity andreflectivity of the film may behave in a bistable fashion and analyze how theeffects found depend on the film thickness and on the inhomogeneous width ofthe exciton optical transition.Comment: 26 pages, 9 figure

Nonlinear resonance reflection from and transmission through a dense glassy system built up of oriented linear Frenkel chains: Two-level model