Surface second-harmonic susceptibility determined by noncollinear reflected second-harmonic generation

Abstract

We investigate the noncollinear reflected second-harmonic generation (SHG) for monolayers of Rhodamine 6G adsorbed on fused silica. We show that the ratios between the surface molecular χ(2) components can be related to the values of the polarization angles of the two incident beams when minima of the resulting SHG intensity are obtained.