Scientific Results

Metallodielectric Hybrid Antennas for Ultrastrong Enhancement of Spontaneous Emission

Year: 2012

Authors: Chen X.-W., Agio M., Sandoghdar V.

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

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.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 108 (23)      Pages from: 233001  to: 233001

More Information: We acknowledge financial support from the Max Planck Society, the ERC advanced grant SINGLEION, and the Alexander von Humboldt Foundation.
DOI: 10.1103/PhysRevLett.108.233001

Citations: 83
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