Super-resolution for a point source using positive refraction

Miñano Dominguez, Juan Carlos and Benitez Gimenez, Pablo and Gonzalez Lopez, Juan Carlos and Grabovičkić, Dejan and Ahmadpanahi, Hammed (2012). Super-resolution for a point source using positive refraction. In: "Proceedings of SPIE. Metamaterials: Fundamentals and Applications V", 12/08/2012 - 16/08/2012, San Diego, California, USA. pp. 845511-8455112. https://doi.org/10.1117/12.929706.

Description

Title: Super-resolution for a point source using positive refraction
Author/s:
  • Miñano Dominguez, Juan Carlos
  • Benitez Gimenez, Pablo
  • Gonzalez Lopez, Juan Carlos
  • Grabovičkić, Dejan
  • Ahmadpanahi, Hammed
Item Type: Presentation at Congress or Conference (Article)
Event Title: Proceedings of SPIE. Metamaterials: Fundamentals and Applications V
Event Dates: 12/08/2012 - 16/08/2012
Event Location: San Diego, California, USA
Title of Book: Proceedings of SPIE. Metamaterials: Fundamentals and Applications V
Date: 2012
Volume: 8455
Subjects:
Freetext Keywords: Super-resolution, Perfect Imaging, Maxwell Fish Eye, Spherical Geodesic Waveguide, Perfect Drain
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (2MB) | Preview

Abstract

Leonhardt demonstrated (2009) that the 2D Maxwell Fish Eye lens (MFE) can focus perfectly 2D Helmholtz waves of arbitrary frequency, i.e., it can transport perfectly an outward (monopole) 2D Helmholtz wave field, generated by a point source, towards a receptor called "perfect drain" (PD) located at the corresponding MFE image point. The PD has the property of absorbing the complete radiation without radiation or scattering and it has been claimed as necessary to obtain super-resolution (SR) in the MFE. However, a prototype using a "drain" different from the PD has shown λ/5 resolution for microwave frequencies (Ma et al, 2010). Recently, the SR properties of a device equivalent to the MFE, called the Spherical Geodesic Waveguide (SGW) (Miñano et al, 2012) have been analyzed. The reported results show resolution up to λ /3000, for the SGW loaded with the perfect drain, and up to λ /500 f for the SGW without perfect drain. The perfect drain was realized as a coaxial probe loaded with properly calculated impedance. The SGW provides SR only in a narrow band of frequencies close to the resonance Schumann frequencies. Here we analyze the SGW loaded with a small "perfect drain region" (González et al, 2011). This drain is designed as a region made of a material with complex permittivity. The comparative results show that there is no significant difference in the SR properties for both perfect drain designs.

More information

Item ID: 19713
DC Identifier: http://oa.upm.es/19713/
OAI Identifier: oai:oa.upm.es:19713
DOI: 10.1117/12.929706
Official URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1381712
Deposited by: Memoria Investigacion
Deposited on: 15 Sep 2013 10:16
Last Modified: 21 Apr 2016 20:57
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM