Thickness-Independent Narrow Resonance in a Stack of Plasmonic Lattices

Ilia M. Fradkin, Sergey A. Dyakov, Nikolay A. Gippius

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Plasmonic lattices consisting of nanoparticles in a homogeneous environment are well known for their support of so-called surface lattice resonances. They are associated with localized surface plasmons coupled to each other via photons propagating freely along the structure. Interestingly, such structures provide narrow resonances in plasmonic structures without their coupling to any external high-Q resonators. In this paper, we explore modes in a stack of two identical plasmonic lattices. We demonstrate that such a structure is able to support a mode that is positioned strictly on a Rayleigh anomaly and does not shift with the variation of distance between two lattices over wide limits. Given the fact that the period is the most stably reproduced quantity in an experiment, such behavior can be used to simplify the fabrication of structures with resonances at desired energies. The application of this effect can be very useful in lasing, light emission from metasurfaces, optical filters, and many other optical devices.

Original languageEnglish
Article number054030
JournalPhysical Review Applied
Volume14
Issue number5
DOIs
Publication statusPublished - 13 Nov 2020

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