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A new polarimeter based on optical nonreciprocity in gratings with two-dimensional chirality

A new polarimeter based on optical nonreciprocity in gratings with two-dimensional chirality
A new polarimeter based on optical nonreciprocity in gratings with two-dimensional chirality
We have studied the optical transmission properties of a number of different dielectric diffraction gratings that each exhibit two-dimensional chirality in their grating elements.We have found that the diffracted beams transmitted through these structures exhibit large anisotropic polarization changes and polarization-dependent intensity modulations even though the chiral elements are arranged in square grating arrays. The strength and functional form of both of these effects differ for each diffracted beam. They are also dependent on the chirality of the surface patterning and the thickness of the patterned dielectric film. We show how these properties could be exploited to provide a new and more versatile form of polarimeter, and how the operation of such a device is inherently dependent on the optical nonreciprocity of these chiral gratings.
679-693
Potts, Adrian
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Zhang, W
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Bagnall, Darren
5d84abc8-77e5-43f7-97cb-e28533f25ef1
Potts, Adrian
eabb1f57-df93-4b82-aa62-457009718e91
Zhang, W
e7ac3aeb-ecaf-462b-80f4-91bae68ebf4f
Bagnall, Darren
5d84abc8-77e5-43f7-97cb-e28533f25ef1

Potts, Adrian, Zhang, W and Bagnall, Darren (2010) A new polarimeter based on optical nonreciprocity in gratings with two-dimensional chirality. Applied Physics B, 99 (4), 679-693. (Submitted)

Record type: Article

Abstract

We have studied the optical transmission properties of a number of different dielectric diffraction gratings that each exhibit two-dimensional chirality in their grating elements.We have found that the diffracted beams transmitted through these structures exhibit large anisotropic polarization changes and polarization-dependent intensity modulations even though the chiral elements are arranged in square grating arrays. The strength and functional form of both of these effects differ for each diffracted beam. They are also dependent on the chirality of the surface patterning and the thickness of the patterned dielectric film. We show how these properties could be exploited to provide a new and more versatile form of polarimeter, and how the operation of such a device is inherently dependent on the optical nonreciprocity of these chiral gratings.

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Submitted date: 19 May 2010
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 270983
URI: http://eprints.soton.ac.uk/id/eprint/270983
PURE UUID: 4310c7e2-79e3-4120-b60c-4d113dc4f0cc

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Date deposited: 05 May 2010 08:48
Last modified: 05 Oct 2018 12:11

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Contributors

Author: Adrian Potts
Author: W Zhang
Author: Darren Bagnall

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