Microscopic treatment of substrate effects on linear and quadratic optical response of model Langmuir-Blodgett multilayers

Authors

Marc in het Panhuis, University of WollongongFollow
R W. Munn, UMIST

RIS ID

19040

Publication Details

in het Panhuis, M. & Munn, R. W. (2000). Microscopic treatment of substrate effects on linear and quadratic optical response of model Langmuir-Blodgett multilayers. Journal of Chemical Physics, 113 (23), 10685-10690.

Abstract

Microscopic calculations are reported of linear and quadratic nonlinear optical response in model Langmuir-Blodgett films on a substrate, which is treated by the method of images. The effect of the substrate is significant in the first two layers, and is greatest for tilted molecules with their head groups adjacent to the substrate. The main qualitative effect is to lower the symmetry relative to a free-standing film. Calculations for stearic acidfilms show that the substrate effect is most important for molecules with nonuniform response on a metallic substrate.