Multilayered Plasmonic Covers for Comblike Scattering Response and Optical Tagging

Authors

Francesco Monticone, University of Texas at Austin
Christos Argyropoulos, University of Texas at AustinFollow
Andrea Alu, University of Texas at AustinFollow

Date of this Version

2013

Citation

PRL 110, 113901 (2013)

Comments

Copyright 2013 American Physical Society

DOI: 10.1103/PhysRevLett.110.113901

Abstract

We discuss the potential of multilayered plasmonic particles to tailor the optical scattering response. The interplay of plasmons localized in thin stacked shells realizes peculiar degenerate cloaking and resonant states occurring at arbitrarily close frequencies. These concepts are applied to realize ultrasharp comblike scattering responses and synthesize staggered, ideally strong superscattering states closely coupled to invisible states. We demonstrate robustness to material losses and to variations in the background medium, properties that make these structures ideal for optical tagging.