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Phase-change Nanophotonics

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
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 - Accepted Manuscript
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More information

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
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976

Catalogue record

Date deposited: 24 Jan 2017 09:47
Last modified: 22 Nov 2021 02:45

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