Second Harmonic and Sum Frequency Generation on Dye-Coated Surfaces Using Collinear and Non-Collinear Excitation Geometries

摘要

Doubly resonantly enhanced sum frequency generation from rhodamine 6G monolayers adsorbed on glass substates is compared with resonantly enhanced second harmonic generation using a collinear excitation geometry. Second harmonic and sum frequency generation with a non-collinear excitation geometry is also reported where spatial filtering of the non-collinear output is shown to increase the scattered light rejection by more than 4 orders of magnitude. (ERA citation 12:031245)