Metallodielectric Hybrid Antennas for Ultrastrong Enhancement of Spontaneous Emission

Xue-Wen Chen, Mario Agio, and Vahid Sandoghdar
Phys. Rev. Lett. 108, 233001 – Published 8 June 2012

Abstract

We devise new optical antennas that reduce the excited-state radiative lifetimes of emitters to the order of 100 fs while maintaining quantum efficiencies of about 80% at a broadband operation. Here, we combine metallic nanoparticles with planar dielectric structures and exploit design strategies from plasmonic nanoantennas and concepts from cavity quantum electrodynamics to maximize the local density of states and minimize the nonradiative losses incurred by the metallic constituents. The proposed metallodielectric hybrid antennas promise an important impact on various fundamental and applied research fields, including photophysics, ultrafast plasmonics, bright single-photon sources, and Raman spectroscopy.

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  • Received 28 December 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.233001

© 2012 American Physical Society

Authors & Affiliations

Xue-Wen Chen1,2, Mario Agio3, and Vahid Sandoghdar1,2

  • 1Max Planck Institute for the Science of Light, D-91058 Erlangen, Germany
  • 2Friedrich-Alexander University (FAU), D-91058 Erlangen, Germany
  • 3National Institute of Optics (INO-CNR) and European Laboratory for Nonlinear Spectroscopy (LENS), via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy

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Issue

Vol. 108, Iss. 23 — 8 June 2012

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