Multipolar contributions to the second-order nonlinearity of gold
- Kauranen, M.
- Wang, F. X.
- Rodriguez, F.
- Sipe, J. E.
- Albers, Willem M.
- Ahorinta, R.
Publication date
January 2010
DOI Publisher
IEEE Institute of Electrical and Electronic EngineersAbstract
We use two-beam second-harmonic generation to separate the surface (electric-dipole) and bulk (magnetic-dipole and electric-quadrupole)-type contributions to the second-order nonlinear optical response of gold films of different thicknesses. Surprisingly, the bulk-type response is more sensitive to surface morphology than the surface-type response. (4 refs.
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