Nonlinear Optics And Electro-Optics In Langmuir-Blodgett Films

G H 1 Cross; I R Peterson; I R Girling

doi:10.1117/12.941964

4 February 1988 Nonlinear Optics And Electro-Optics In Langmuir-Blodgett Films

G H 1 Cross, I R Peterson, I R Girling

Proceedings Volume 0824, Advances in Nonlinear Polymers and Inorganic Crystals, Liquid Crystals and Laser Media; (1988) https://doi.org/10.1117/12.941964
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

Abstract

The electro-optic response of nonlinear supermolecular arrays of organic dyes, prepared by the Langmuir-Blodgett (LB) technique is measured by an attenuated total reflection (ATR) method. The field induced dielectric constant changes in the films modify the coupling conditions for the excitation of a silver surface plasmon mode and produces a differential reflectivity in the region of the ATR minimum. The magnitude of the response is measured for film thicknesses corresponding to 1 through to 13 monomolecular LB layers. An anomalous dependence is seen. The anomaly occurs at a film thickness which segregates two thickness regimes for which the differential responses are qualitatively dissimilar. Structural re-organisations in the thin film regime may be responsible.

Citation Download Citation

G H 1 Cross, I R Peterson, and I R Girling "Nonlinear Optics And Electro-Optics In Langmuir-Blodgett Films", Proc. SPIE 0824, Advances in Nonlinear Polymers and Inorganic Crystals, Liquid Crystals and Laser Media, (4 February 1988); https://doi.org/10.1117/12.941964

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