Title

Near-field investigation of the effect of the array edge on the resonance of loop frequency selective surface elements at mid-infrared wavelengths

Authors

Authors

E. Tucker; J. D. Archangel; M. B. Raschke;G. Boreman

Comments

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Abbreviated Journal Title

Opt. Express

Keywords

ELECTRON-BEAM; METASURFACES; REFLECTARRAY; LITHOGRAPHY; TRUNCATION; DESIGN; Optics

Abstract

Mid-infrared scattering scanning near-field optical microscopy, in combination with far-field infrared spectroscopy, and simulations, was employed to investigate the effect of mutual-element coupling towards the edge of arrays of loop elements acting as frequency selective surfaces (FSSs). Two different square loop arrays on ZnS over a ground plane, resonant at 10.3 mu m, were investigated. One array had elements that were closely spaced while the other array had elements with greater inter-element spacing. In addition to the dipolar resonance, we observed a new emergent resonance associated with the edge of the closely-spaced array as a finite size effect, due to the broken translational invariance. (C) 2015 Optical Society of America

Journal Title

Optics Express

Volume

23

Issue/Number

9

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

10974

Last Page

10985

WOS Identifier

WOS:000354337700009

ISSN

1094-4087

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