Design principles for wave plate metasurfaces using plasmonic L-shaped nanoantennas

Asad A Tahir, Sebastian A Schulz, Israel De Leon, Robert W Boyd

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Plasmonic L-shaped antennas are an important building block of metasurfaces and have been used to fabricate ultra-thin wave plates. In this work we present principles that can be used to design wave plates at a wavelength of choice and for diverse application requirements using arrays of L-shaped plasmonic antennas. We derive these design principles by studying the behavior of the vast parameter space of these antenna arrays. We show that there are two distinct regimes: a weak inter-particle coupling and a strong inter-particle coupling regime. We describe the behavior of the antenna array in each regime with regards to wave plate functionality, without resorting to approximate theoretical models. Our work is the first to explain these design principles and serves as a guide for designing wave plates for specific application requirements using plasmonic L-shaped antenna arrays.
Original languageEnglish
Article number035001
JournalJournal of Optics
Volume19
Issue number3
DOIs
Publication statusPublished - 6 Feb 2017

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