Experimental evidence of super-resolution better than lambda/105 with positive refraction

Miñano Dominguez, Juan Carlos; Sánchez-Dehesa, José; Gonzalez Lopez, Juan Carlos; Benitez Gimenez, Pablo; Grabovičkić, Dejan; Carbonell, Jorge y Ahmadpanahi, Hammed (2014). Experimental evidence of super-resolution better than lambda/105 with positive refraction. "New Journal of Physics", v. 16 (n. 3); pp. 1-13. ISSN 1367-2630. https://doi.org/10.1088/1367-2630/16/3/033015.

Descripción

Título: Experimental evidence of super-resolution better than lambda/105 with positive refraction
Autor/es:
  • Miñano Dominguez, Juan Carlos
  • Sánchez-Dehesa, José
  • Gonzalez Lopez, Juan Carlos
  • Benitez Gimenez, Pablo
  • Grabovičkić, Dejan
  • Carbonell, Jorge
  • Ahmadpanahi, Hammed
Tipo de Documento: Artículo
Título de Revista/Publicación: New Journal of Physics
Fecha: Marzo 2014
Volumen: 16
Materias:
Palabras Clave Informales: Perfect imaging, super-resolution, spherical geodesic waveguide
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Electrónica Física
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Super-resolution (SR) systems surpassing the Abbe diffraction limit have been theoretically and experimentally demonstrated using a number of different approaches and technologies: using materials with a negative refractive index, utilizing optical super-oscillation, using a resonant metalens, etc. However, recently it has been proved theoretically that in the Maxwell fish-eye lens (MFE), a device made of positive refractive index materials, the same phenomenon takes place. Moreover, using a simpler device equivalent to the MFE called the spherical geodesic waveguide (SGW), an SR of up to λ/3000 was simulated in COMSOL. Until now, only one piece of experimental evidence of SR with positive refraction has been reported (up to λ/5) for an MFE prototype working at microwave frequencies. Here, experimental results are presented for an SGW prototype showing an SR of up to λ/105. The SGW prototype consists of two concentric metallic spheres with an air space in between and two coaxial ports acting as an emitter and a receiver. The prototype has been analyzed in the range 1 GHz to 1.3 GHz.

Más información

ID de Registro: 35713
Identificador DC: http://oa.upm.es/35713/
Identificador OAI: oai:oa.upm.es:35713
Identificador DOI: 10.1088/1367-2630/16/3/033015
URL Oficial: http://iopscience.iop.org/1367-2630/16/3/033015/article
Depositado por: Memoria Investigacion
Depositado el: 23 Jun 2015 17:50
Ultima Modificación: 23 Jun 2015 17:50
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