Resonantly enhanced surface second-harmonic generation and sum-frequency generation have been demonstrated on Rhodamine 6G-coated glass substrates using a noncollinear excitation geometry. This geometry yields an output beam that is spatially separated from the input beams. The relative efficiency of nonlinear generation as a function of the angular dependence and spatial overlap of the input beams is calculated and compared with experiment.
© 1987 Optical Society of America
R. E. Muenchausen, R. A. Keller, and N. S. Nogar, "Surface second-harmonic and sum-frequency generation using a noncollinear excitation geometry," J. Opt. Soc. Am. B 4, 237-241 (1987)