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10 May 2010 Enhanced quadrupolar second-harmonic generation from rough gold films
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Abstract
The nonlinear optical response of gold films of different thicknesses is investigated by two-beam second-harmonic generation to address the role of surface and bulk effects in their second-order nonlinear optical response. Preliminary results suggest that both types of effects contribute to the measured second-harmonic signals. Furthermore, both effects are found to be enhanced for the thin film with a higher level of nanoscale surface roughness.
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Fu Xiang Wang, Francisco J. Rodríguez, Willem M. Albers, and Martti Kauranen "Enhanced quadrupolar second-harmonic generation from rough gold films", Proc. SPIE 7712, Nanophotonics III, 77121E (10 May 2010); https://doi.org/10.1117/12.853716
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