Surface plasmon mediated transmission of subwavelength slits at THz frequencies

T. H. Isaac, J. Gómez Rivas, J. R. Sambles, W. L. Barnes, and E. Hendry
Phys. Rev. B 77, 113411 – Published 28 March 2008

Abstract

We present measurements and a numerical modeling that elucidate the role of surface plasmons in the resonant transmission of a subwavelength slit in a conducting material. By using THz time domain spectroscopy, we determine the Fabry–Pérot transmission resonances for a single slit formed from a wafer of a semiconductor with a surface plasma frequency in the THz frequency range. We measure large redshifts in the resonant frequencies close to the surface plasma frequency, which are 50% lower than the resonance frequencies expected well below the surface plasma frequency. This is an effect attributed to the coupling of plasmons on the adjacent surfaces of the slit.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 22 December 2007

DOI:https://doi.org/10.1103/PhysRevB.77.113411

©2008 American Physical Society

Authors & Affiliations

T. H. Isaac1, J. Gómez Rivas2, J. R. Sambles1, W. L. Barnes1, and E. Hendry1

  • 1School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, United Kingdom
  • 2FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 77, Iss. 11 — 15 March 2008

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×