title   
  

Circularly and elliptically polarized near-field radiation from nanoscale subwavelength apertures

Öğüt, Erdem and Şendur, Kürşat (2010) Circularly and elliptically polarized near-field radiation from nanoscale subwavelength apertures. Applied Physics Letters, 96 (14). ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.3371696

Abstract

With advances in nanotechnology, obtaining circularly and elliptically polarized optical spots beyond the diffraction limit is an emerging need for plasmonic applications. Two techniques are suggested to obtain circularly and elliptically polarized near-field radiation using subwavelength apertures. It is demonstrated that a square aperture can mediate diffraction limited circularly or elliptically polarized radiation into an optical spot with circular or elliptical polarization beyond the diffraction limit. Linearly polarized diffraction limited radiation is converted into a circularly or an elliptically polarized optical spot beyond the diffraction limit by creating asymmetry in the subwavelength aperture.

Item Type:Article
Additional Information:Article Number: 141104
Uncontrolled Keywords:light diffraction; light polarisation; nanophotonics; plasmonics
Subjects:Q Science > QC Physics > QC1 General
ID Code:13915
Deposited By:Kürşat Şendur
Deposited On:06 May 2010 14:51
Last Modified:25 May 2011 14:18

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