Physical Review Letters
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Mixing of Surface and Bulk Optical Nonlinearities via Surface Plasmon Polaritons
Author(s): Guy Sayer, Matan Iluz, Amit Kam, and Guy Bartal
We present controlled interplay between the surface second-order and bulk third-order nonlinearities of gold, utilizing wave mixing between surface plasmons on the metal-air interface and free-space photons. By tuning the nonlinear interactions, we demonstrate experimentally that photons emerging fr… [Phys. Rev. Lett. 135, 106901] Published Tue Sep 02, 2025
