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Terahertz lensing effect in high-temperature superconductors

Zivari, A. P ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1364/JOSAB.36.001241
  3. Publisher: OSA - The Optical Society , 2019
  4. Abstract:
  5. We show that high-temperature superconductors can be used to build a terahertz superlens. These materials exhibit hyperbolic behavior at frequencies between their two plasma frequencies corresponding to electric fields parallel and perpendicular to their c-axis. Due to the large component of permittivity perpendicular to the c-axis, the resolution of the proposed lens is much below the diffraction limit (λ/1000). In this paper we demonstrate this lensing phenomenon with a simple slab of a high-temperature superconductor. © 2019 Optical Society of America
  6. Keywords:
  7. Diffraction ; Electric fields ; Diffraction limits ; Large components ; Plasma frequencies ; Superlenses ; Tera Hertz ; High temperature superconductors
  8. Source: Journal of the Optical Society of America B: Optical Physics ; Volume 36, Issue 5 , 2019 , Pages 1241-1245 ; 07403224 (ISSN)
  9. URL: https://www.osapublishing.org/josab/abstract.cfm?uri=josab-36-5-1241