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Title: Cylindrical vector beams of light from an electrically excited plasmonic lens

The production of cylindrical vector beams from a low-energy, electric, microscale light source is demonstrated both experimentally and theoretically. This is achieved by combining a “plasmonic lens” with the ability to locally and electrically excite propagating surface plasmons on gold films. The plasmonic lens consists of concentric circular subwavelength slits that are etched in a thick gold film. The local excitation arises from the inelastic tunneling of electrons from the tip of a scanning tunneling microscope. We report on the emission of radially polarized beams with an angular divergence of less than ±4°.
Authors:
; ; ;  [1] ; ;  [2] ;  [3]
  1. Institut des Sciences Moléculaires d'Orsay, CNRS—Université Paris-Sud (UMR 8214), Orsay (France)
  2. Université Grenoble Alpes, Inst. NEEL, F-38000 Grenoble (France)
  3. (France)
Publication Date:
OSTI Identifier:
22303481
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CYLINDRICAL CONFIGURATION; EMISSION; EXCITATION; FILMS; GOLD; LENSES; LIGHT SOURCES; PLASMONS; POLARIZED BEAMS; SCANNING TUNNELING MICROSCOPY; SURFACES; TUNNEL EFFECT; VISIBLE RADIATION