Title

Broadband circularly-polarized infrared emission from multilayer metamaterials

Authors

Authors

S. L. Wadsworth; P. G. Clem; E. D. Branson;G. D. Boreman

Comments

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Abbreviated Journal Title

Opt. Mater. Express

Keywords

COHERENT THERMAL EMISSION; PHOTONIC CRYSTALS; KIRCHHOFFS LAW; NEAR-FIELD; RADIATION; SURFACES; SILICON; DEVICE; WAVES; BODY; Materials Science, Multidisciplinary; Optics

Abstract

Development of a 2D metamaterial that preferentially emits broadband circularly-polarized (CP) infrared radiation is hindered by the fact that orthogonal electric-field components are uncorrelated at the surface of the thermal emitter, a consequence of the fluctuation-dissipation theorem. We achieve broadband CP thermal emission by fabricating a meanderline quarter-wave retarder on a transparent thermal-isolation layer. Behind this isolation layer, in thermal contact with the emitter, is a wire-grid polarizer. Along with an unavoidable linear polarized radiation characteristic from the meanderline, we measured a degree of circular polarization (DOCP) of 28%, averaged over the 8- to 12 mu m band. (C) 2011 Optical Society of America

Journal Title

Optical Materials Express

Volume

1

Issue/Number

3

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

466

Last Page

479

WOS Identifier

WOS:000299047600016

ISSN

2159-3930

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