Phase-change Nanophotonics
Phase-change Nanophotonics
Phase-change materials, including metals, semiconductors and liquid crystals, have played a key role in the evolution of active nanophotonic and plasmonic functionalities. They present unique opportunities at the nano- (i.e. subwavelength) scale as a source of optical nonlinearity and a platform for high-contrast, low-energy electro-and all-optical switching / memory devices. I will review Southampton’s work in this field: from the demonstration of exceptionally large (including metamaterial-enhanced) phase-change nonlinearities underpinned by light-induced, surface-mediated structural transitions in confined gallium; through the harnessing of non-volatile optically-induced amorphous/crystalline transitions in chalcogenides (such as Ge:Sb:Te) to realize plasmonic hybrid and all-dielectric switchable and laser re-writable metasurfaces; to the recent revelation that germanium and bismuth-based chalcogenide alloys can themselves present switchable and compositionally-tunable plasmonic properties in the UV-VIS spectral range.
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
19 February 2017
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
MacDonald, Kevin F.
(2017)
Phase-change Nanophotonics.
International Workshop on Emerging Applications of Optical Nanostructures, , Tel Aviv, Israel.
19 - 23 Feb 2017.
Record type:
Conference or Workshop Item
(Other)
Abstract
Phase-change materials, including metals, semiconductors and liquid crystals, have played a key role in the evolution of active nanophotonic and plasmonic functionalities. They present unique opportunities at the nano- (i.e. subwavelength) scale as a source of optical nonlinearity and a platform for high-contrast, low-energy electro-and all-optical switching / memory devices. I will review Southampton’s work in this field: from the demonstration of exceptionally large (including metamaterial-enhanced) phase-change nonlinearities underpinned by light-induced, surface-mediated structural transitions in confined gallium; through the harnessing of non-volatile optically-induced amorphous/crystalline transitions in chalcogenides (such as Ge:Sb:Te) to realize plasmonic hybrid and all-dielectric switchable and laser re-writable metasurfaces; to the recent revelation that germanium and bismuth-based chalcogenide alloys can themselves present switchable and compositionally-tunable plasmonic properties in the UV-VIS spectral range.
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macdonald phase change nanophotonics
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Accepted/In Press date: 17 November 2016
Published date: 19 February 2017
Venue - Dates:
International Workshop on Emerging Applications of Optical Nanostructures, , Tel Aviv, Israel, 2017-02-19 - 2017-02-23
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 404830
URI: http://eprints.soton.ac.uk/id/eprint/404830
PURE UUID: b1369c91-887d-4b37-893a-25203109ced0
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Date deposited: 24 Jan 2017 09:47
Last modified: 16 Mar 2024 03:10
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Contributors
Author:
Kevin F. MacDonald
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