SEDL / STP / STP1028-EB / STP18543S

Sum-Frequency Generation on Dye-Coated Surfaces Using Collinear and Noncollinear Excitation Geometries

Muenchausen, RE
Los Alamos National Laboratory, Los Alamos, New Mexico

Nguyen, DC
Los Alamos National Laboratory, Los Alamos, New Mexico

Keller, RA
Los Alamos National Laboratory, Los Alamos, New Mexico

Nogar, NS
Los Alamos National Laboratory, Los Alamos, New Mexico

Pages: 9    Published: Jan 1988

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Abstract

Resonantly enhanced surface second-harmonic generation and sum- frequency generation has been demonstrated on rhodamine 6G coated glass substrates using different excitation geometries. The collinearly excited, doubly-resonant sum-frequency signal is enhanced by more than two orders of magnitude relative to resonantly enhanced second-harmonic generation. For noncollinear excitation, the relative efficiency of nonlinear generation as a function of the angular dependence of the input beams is calculated and compared with experiment.