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Dielectric Yagi-Uda...
Dielectric Yagi-Uda nanoantennas driven by electron-hole plasma photoexcitation
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- Li, S. (author)
- Saint Petersburg National Research University of Information Technologies, Mechanics and Optics University (ITMO), Russian Federation
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- Lepeshov, S. I. (author)
- Saint Petersburg National Research University of Information Technologies, Mechanics and Optics University (ITMO), Russian Federation
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- Savelev, R.S. (author)
- Saint Petersburg National Research University of Information Technologies, Mechanics and Optics University (ITMO), Russian Federation
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- Baranov, Denis, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Belov, P. (author)
- Saint Petersburg National Research University of Information Technologies, Mechanics and Optics University (ITMO), Russian Federation
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- Krasnok, A. E. (author)
- The University of Texas at Austin, USA
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(creator_code:org_t)
- 2017-11-23
- 2017
- English.
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In: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 917:6
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Abstract
Subject headings
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- All-dielectric nanophotonics based on high-index dielectric nanoparticles became a powerful platform for modern light science, providing many fascinating applications, including high-efficient nanoantennas and metamaterials. High-index dielectric nanostructures are of a special interest for nonlinear nanophotonics, where they demonstrate special types of optical nonlinearity, such as electron-hole plasma photoexcitation, which are not inherent to plasmonic nanostructures. Here, we propose a novel type of highly tunable all-dielectric Yagi-Uda nanoantennas, consisting of a chain of Si nanoparticles exciting by an electric dipole source, which allow tuning of their radiating properties via electron-hole plasma photoexcitation. We theoretically and numerically demonstrate the tuning of radiation power patterns and the Purcell effect by additional pumping of several boundary nanoparticles with relatively low peak intensities of fs-laser.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- kon (subject category)
- ref (subject category)
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