skip to main content

SciTech ConnectSciTech Connect

Title: Perfect coupling of light to a periodic dielectric/metal/dielectric structure

Using the finite difference time domain method, it is demonstrated that perfect coupling can be achieved between normally incident light and a periodic dielectric/metal/dielectric structure. The structure serves as a diffraction grating that excites modes related to the long range surface plasmon and short range surface plasmon modes that propagate on continuous metallic films. By optimizing the structural dimensions, perfect coupling is achieved between the incident light and these modes. A high Q of 697 and an accompanying ultrasharp linewidth of 0.8 nm are predicted for a 10 nm silver film for optimal conditions.
Authors:
 [1] ;  [2] ; ;  [3] ;  [1] ;  [4]
  1. Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (United States)
  2. (China)
  3. Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive Evanston, Illinois 60208 (United States)
  4. (United States)
Publication Date:
OSTI Identifier:
22308457
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 3; 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; COUPLING; DIELECTRIC MATERIALS; DIFFRACTION GRATINGS; FILMS; OPTIMIZATION; PERIODICITY; SILVER; SURFACES; VISIBLE RADIATION