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Switching metamaterials with electronic signals and electron-beam excitations

Record type: Conference or Workshop Item (Paper)

We demonstrate that the material technology behind rewritable optical disks offers a new switching paradigm for metamaterials. Non-volatile optical switching devices are achieved through the hybridization of planar metamaterials with functional chalcogenide glass. We show experimentally that this phase-change medium can be switched in a hybrid metamaterial structure between amorphous and crystalline states by application of short electrical pulses or by stimulation with a focused electron beam.

We have achieved a significant shift in the resonant transmission spectrum of metamaterials based on metallic nanostructures that support plasmonic dark-mode resonances, hybridized with nanoscale layers of the chalcogenide gallium lanthanum sulphide. The transition between amorphous and crystalline forms brings about a 120 nm shift in the near-infrared resonance wavelength of the hybrid structure, providing transmission modulation functionality with a contrast ratio of 4:1 in a device of sub-wavelength thickness.

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Citation

Sámson, Z.L., Adamo, G., MacDonald, K.F., Knight, K., De Angelis, F., Nikolaenko, A., Huang, C.C., Di Fabrizio, E., Hewak, D.W. and Zheludev, N.I. (2010) Switching metamaterials with electronic signals and electron-beam excitations At SPIE Photonics Europe 2010, Belgium. 12 - 16 Apr 2010.

More information

Published date: April 2010
Venue - Dates: SPIE Photonics Europe 2010, Belgium, 2010-04-12 - 2010-04-16

Identifiers

Local EPrints ID: 148973
URI: http://eprints.soton.ac.uk/id/eprint/148973
PURE UUID: 2160adea-1299-4e98-a60d-4f377627528a
ORCID for K.F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for C.C. Huang: ORCID iD orcid.org/0000-0003-3471-2463
ORCID for D.W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

Catalogue record

Date deposited: 29 Apr 2010 12:42
Last modified: 18 Jul 2017 19:31

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Contributors

Author: Z.L. Sámson
Author: G. Adamo
Author: K.F. MacDonald ORCID iD
Author: K. Knight
Author: F. De Angelis
Author: A. Nikolaenko
Author: C.C. Huang ORCID iD
Author: E. Di Fabrizio
Author: D.W. Hewak ORCID iD
Author: N.I. Zheludev

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