Please use this identifier to cite or link to this item:
Title: Specular optical activity of achiral metasurfaces
Authors: Plum, Eric
Fedotov, Vassili A.
Zheludev, Nikolay I.
Keywords: Dichroism
Issue Date: 2016
Source: Plum, E., Fedotov, V. A., & Zheludev, N. I. (2016). Specular optical activity of achiral metasurfaces. Applied Physics Letters, 108(14), 141905-.
Series/Report no.: Applied Physics Letters
Abstract: Optical activity in 3D-chiral media in the form of circular dichroism and birefringence is a fundamental phenomenon that serves as evidence of life forms and is widely used in spectroscopy. Even in 3D-chiral media exhibiting strong transmission optical activity, the reflective effect is weak and sometimes undetectable. Here, we report that specular optical activity at structuredinterfaces can be very strong. Resonant polarization rotation reaching 25°25° and reflectivity contrast exceeding 50% for oppositely circularly polarized waves are observed for microwaves reflected by a metasurface with structural elements lacking two-fold rotational symmetry. The effect arises at oblique incidence from a 3D-chiral arrangement of the wave's direction and the metasurface's structure that itself does not possess chiral elements. Specular optical activity of such magnitude is unprecedented. It is fundamentally different from the polarizationeffects occurring upon scattering, reflection, and transmission from surfaces with 2D-chiral patterns. The scale of the effect allows applications in polarization sensitive devices and surface spectroscopies.
ISSN: 0003-6951
DOI: 10.1063/1.4944775
Rights: © 2016 AIP Publishing LLC. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
Specular optical activity of achiral metasurfaces.pdf1.72 MBAdobe PDFThumbnail


Updated on Jan 13, 2021


Updated on Feb 25, 2021

Page view(s)

Updated on Feb 27, 2021

Download(s) 20

Updated on Feb 27, 2021

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.