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Title: Skirting terahertz waves in a photo-excited nanoslit structure

Terahertz fields can be dramatically enhanced as they propagate through nanometer-sized slits. The enhancement is mediated by a significant accumulation of the induced surface charges on the surrounding metal. This enhancement is shown here to be dynamically modulated while the nanoslits are gradually shunted using a copropagating optical beam. The terahertz fields are found to skirt the nanoscale photo-excited region underneath the slits, scattering to the far field and rigorously mapping the near field.
Authors:
 [1] ;  [2] ; ;  [3] ;  [1] ;  [4] ; ; ;  [1] ;  [5]
  1. INRS-EMT, Varennes, Quebec J3X 1S2 (Canada)
  2. (Switzerland)
  3. Institute of Applied Physics, University of Bern, Sidlerstrasse 5, CH-3012 Bern (Switzerland)
  4. (United Kingdom)
  5. LMN, Paul Scherrer Institut, Villigen 5232 (Switzerland)
Publication Date:
OSTI Identifier:
22267701
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; LIGHT TRANSMISSION; METALS; NANOSTRUCTURES; SCATTERING; WAVELENGTHS