Mid-infrared plasmonic inductors: Enhancing inductance with meandering lines

Research output: Contribution to journalArticle

Authors

  • Víctor Torres
  • Rubén Ortuño
  • Pablo Rodríguez-Ulibarri
  • Amadeu Griol
  • Alejandro Martínez
  • Miguel Beruete
  • Mario Sorolla

Colleges, School and Institutes

External organisations

  • Universidad Pública de Navarra
  • Consejo Superior de Investigaciones Cientificas-Universidad Politecnica de Valencia

Abstract

We present a mid-infrared inductor that when applied to an extraordinary transmission hole array produces a strong redshift of the resonant peak accompanied by an unprecedented enlargement of the operation bandwidth. The importance of the result is twofold: from a fundamental viewpoint, the direct applicability of equivalent circuit concepts borrowed from microwaves is demonstrated, in frequencies as high as 17â€...THz upholding unification of plasmonics and microwave concepts and allowing for a simplification of structure design and analysis; in practical terms, a broadband funnelling of infrared radiation with fractional bandwidth and efficiency as high as 97% and 48%, respectively, is achieved through an area less than one hundredth the squared wavelength, which leads to an impressive accessible strong field localization that may be of great interest in sensing applications.

Details

Original languageEnglish
Article number3592
JournalScientific Reports
Volume4
Publication statusPublished - 7 Jan 2014

ASJC Scopus subject areas