Nonlinear Plasmonic Cloaks to Realize Giant All-Optical Scattering Switching

Authors

Christos Argyropoulos, University of Texas at AustinFollow
Pai-Yen Chen, University of Texas at Austin
Francesco Monticone, University of Texas at Austin
Giuseppe D'Aguanno, AEgis Technologies
Andrea Alu, University of Texas at AustinFollow

Date of this Version

2012

Citation

PRL 108, 263905 (2012)

Comments

Copyright 2012 American Physical Society

DOI: 10.1103/PhysRevLett.108.263905

Abstract

Here we extend the reach of Fano resonant coupling by combining this concept with cloaking and plasmonic resonances in a single nonlinear nanoparticle, in order to realize giant all-optical scattering nanoswitches controlled by moderate pumping intensities. We show that a core-shell nonlinear plasmonic particle may be designed to abruptly switch from being completely cloaked to being strongly resonant, with up to a 40 dB cross-sectional difference. Self-tunable optical cloaks and resonant scatterers are envisioned for use as efficient all-optical switches and nanomemories.