Bruno, V. et al. (2020) Negative refraction in time-varying strongly coupled plasmonic-antenna-Epsilon-Near-Zero systems. Physical Review Letters, 124(4), 043902. (doi: 10.1103/PhysRevLett.124.043902)
|
Text
209532.pdf - Accepted Version 9MB | |
|
Text
209532Suppl.pdf - Supplemental Material 499kB |
Abstract
Time-varying metasurfaces are emerging as a powerful instrument for the dynamical control of the electromagnetic properties of a propagating wave. Here we demonstrate an efficient time-varying metasurface based on plasmonic nano-antennas strongly coupled to an epsilon-near-zero (ENZ) deeply subwavelength film. The plasmonic resonance of the metal resonators strongly interacts with the optical ENZ modes, providing a Rabi level spitting of ∼30%. Optical pumping at frequency ω induces a nonlinear polarization oscillating at 2ω responsible for an efficient generation of a phase conjugate and a negative refracted beam with a conversion efficiency that is more than 4 orders of magnitude greater compared to the bare ENZ film. The introduction of a strongly coupled plasmonic system therefore provides a simple and effective route towards the implementation of ENZ physics at the nanoscale.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Bruno, Mr Vincenzo and Clerici, Professor Matteo and Shah, Dr Yash Diptesh and Vezzoli, Dr Stefano and Faccio, Professor Daniele |
Authors: | Bruno, V., DeVault, C., Vezzoli, S., Kudyshev, Z., Huq, T., Mignuzzi, S., Jacassi, A., Saha, S., Shah, Y.D., Maier, S.A., Cumming, D.R.S., Boltasseva, A., Ferrera, M., Clerici, M., Faccio, D., Sapienza, R., and Shalaev, V.M. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review Letters |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
ISSN (Online): | 1079-7114 |
Published Online: | 30 January 2020 |
Copyright Holders: | Copyright © 2020 American Physical Society |
First Published: | First published in Physical Review Letters 124(4): 043902 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
University Staff: Request a correction | Enlighten Editors: Update this record