Abstract

Hyper-Rayleigh scattering (HRS), in other words incoherent second harmonic generation (SHG), is a potential probe to study the structural and nonlinear optical properties of thin solid inhomogenious films [1,2]. In this paper the results of HRS studies of inhomogenious Gd³⁺-containing Langmuir-Blodgett (LB) films are presented. Multilayer Gd³⁺-containing LB films up to 28 periods thick are prepared on the surface of a fuzed quartz substrate. Each period of these structures consists of a Gd³⁺ monolayer squeezed between two monolayers of stearic acid. The Gd ions are transferred from a GdCl₃ solution due to the adsorption at a stearic acid monolayer on the water subphase surface.

© 1998 IEEE