Optical antennas as nanoscale resonators

Year: 2012

Authors: Agio M.

Autors Affiliation: ETH, Phys Chem Lab, CH-8093 Zurich, Switzerland.

Abstract: Recent progress in nanotechnology has enabled us to fabricate sub-wavelength architectures that function as antennas for improving the exchange of optical energy with nanoscale matter. We describe the main features of optical antennas for enhancing quantum emitters and review the designs that increase the spontaneous emission rate by orders of magnitude from the ultraviolet up to the near-infrared spectral range. To further explore how optical antennas may lead to unprecedented regimes of light-matter interactions, we draw a relationship between metal nanoparticles, radio-wave antennas and optical resonators. Our analysis points out how optical antennas may function as nanoscale resonators and how these may offer unique opportunities with respect to state-of-the-art microcavities.

Journal/Review: NANOSCALE

Volume: 4 (3)      Pages from: 692  to: 706

More Information: M.A. wishes to thank V. Sandoghdar for continuous support and advice. He is also grateful to A. Mohammadi, X.-W. Chen, F. Kaminski and L. Rogobete for the stimulating and fruitful collaboration. This work was financed by ETH Zurich.
KeyWords: Metal-enhanced Fluorescence; Near-field; Electromagnetic Theory; Spontaneous Emission; Quantum Coherence; Energy-transfer; Molecules; Light; Decay; Nanoantennas
DOI: 10.1039/c1nr11116g

Citations: 112
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