Optical nanoantenna arrays loaded with nonlinear materials
Pai-Yen Chen, Andrea Alù
Volume: 82, Issue: 23, 2010
235405-1 - 235405-6
Optical nanoantennas loaded by nanoparticles are used to provide large and controllable field enhancement at the nanoscale. Here we show how the introduction of nonlinearities at the nanoload may realize a whole set of all-optical nanoscale functionalities, such as memories, switches and transistors, as a function of whether the
nanoantenna is excited “below” or “above” its resonance frequency. After discussing the main features of this nonlinear nanoantenna operation, we employ its bistable and self-tunable response in a planar array design, which may constitute different nonlinear devices and functionalities of significant interest for optical computing applications.
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