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Title: Tailoring the optical properties of wide-bandgap based microcavities via metal films

We report on the tuning of the optical properties of II-VI-material-based microcavity samples, which is achieved by depositing Ag films on top of the structures. The micro-reflectivity spectra show a spectral shift of the sample resonance dependent on the metal layer thickness. By comparison of the experimental findings with the theoretical calculations applying the transfer matrix method on a metal-dielectric mirror structure, the influence of the metal layer particularly with regard to its partial oxidation was explored. Tamm plasmon modes are created at the interface between an open cavity with three ZnSe quantum wells and a metal layer on top. When tuning the excitonic emission relative to the mode by changing the sample temperature, an anticrossing of the resonances was observed. This is a clear indication that the strong coupling regime has been achieved in that sample configuration yielding a Rabi splitting of 18.5 meV. These results are promising for the realization of polariton-based optical devices with a rather simple sample configuration.
Authors:
; ; ;  [1] ; ; ; ;  [2]
  1. Semiconductor Optics, Institute of Solid State Physics, University of Bremen, 28334 Bremen (Germany)
  2. Semiconductor Epitaxy, Institute of Solid State Physics, University of Bremen, 28334 Bremen (Germany)
Publication Date:
OSTI Identifier:
22489083
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 6; Other Information: (c) 2015 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; CONFIGURATION; DIELECTRIC MATERIALS; FILMS; LAYERS; METALS; MEV RANGE 10-100; QUANTUM WELLS; REFLECTIVITY; SPECTRAL SHIFT; TRANSFER MATRIX METHOD; ZINC SELENIDES