Open AccessNon-reciprocal diffraction in magnetoplasmonic gratings
Author(s) -
Rafael Cichelero,
Mikko Kataja,
Mariano CampoyQuiles,
G. Herranz
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.034842
Subject(s) - diffraction , optics , plasmon , surface plasmon polariton , diffraction grating , nanophotonics , diffraction efficiency , materials science , surface plasmon , surface plasmon resonance , optoelectronics , physics , nanotechnology , nanoparticle
Phase-matching conditions-used to bridge the wave vector mismatch between light and surface plasmon polaritons (SPPs)-have been exploited recently to enable nonreciprocal optical propagation and enhanced magneto-optic responses in magnetoplasmonic systems. Here we show that using diffraction in conjunction with plasmon excitations leads to a photonic system with a more versatile and flexible response. As a testbed, we analyzed diffracted magneto-optical effects in magnetoplasmonic gratings, where broken time-reversal symmetry induces frequency shifts in the energy and angular spectra of plasmon resonance. These result in exceptionally large responses in the diffracted magneto-optical effect. The concepts presented here can be used to develop non-reciprocal optical devices that exploit diffraction, in order to achieve tailored electromagnetic responses.