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Holographic free-electron light source

Holographic free-electron light source
Holographic free-electron light source
Recent advances in the physics and technology of light generation via free-electron proximity and impact interactions with nanostructures (gratings, photonic crystals, nano-undulators, metamaterials and antenna arrays) have enabled the development of nanoscale-resolution techniques for such applications as mapping plasmons, studying nanoparticle structural transformations and characterizing luminescent materials (including time-resolved measurements). Here, we introduce a universal approach allowing generation of light with prescribed wavelength, direction, divergence and topological charge via point-excitation of holographic plasmonic metasurfaces. It is illustrated using medium-energy free-electron injection to generate highly-directional visible to near-infrared light beams, at selected wavelengths in prescribed azimuthal and polar directions, with brightness two orders of magnitude higher than that from an unstructured surface, and vortex beams with topological charge up to ten. Such emitters, with micron-scale dimensions and the freedom to fully control radiation parameters, offer novel applications in nano-spectroscopy, nano-chemistry and sensing.
Li, Guanhai
9adc3579-f0d6-4290-8cde-a3388d99b2cc
Clarke, Brendan P.
4c29e0ec-abb3-4bdd-9ba9-54b2654bd249
So, Jinkyu
06a7afea-61c2-439d-9ac4-047ea21a909b
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Li, Guanhai
9adc3579-f0d6-4290-8cde-a3388d99b2cc
Clarke, Brendan P.
4c29e0ec-abb3-4bdd-9ba9-54b2654bd249
So, Jinkyu
06a7afea-61c2-439d-9ac4-047ea21a909b
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Li, Guanhai, Clarke, Brendan P., So, Jinkyu, MacDonald, Kevin F. and Zheludev, Nikolay I. (2016) Holographic free-electron light source. Nature Communications, 7, [13705]. (doi:10.1038/ncomms13705).

Record type: Article

Abstract

Recent advances in the physics and technology of light generation via free-electron proximity and impact interactions with nanostructures (gratings, photonic crystals, nano-undulators, metamaterials and antenna arrays) have enabled the development of nanoscale-resolution techniques for such applications as mapping plasmons, studying nanoparticle structural transformations and characterizing luminescent materials (including time-resolved measurements). Here, we introduce a universal approach allowing generation of light with prescribed wavelength, direction, divergence and topological charge via point-excitation of holographic plasmonic metasurfaces. It is illustrated using medium-energy free-electron injection to generate highly-directional visible to near-infrared light beams, at selected wavelengths in prescribed azimuthal and polar directions, with brightness two orders of magnitude higher than that from an unstructured surface, and vortex beams with topological charge up to ten. Such emitters, with micron-scale dimensions and the freedom to fully control radiation parameters, offer novel applications in nano-spectroscopy, nano-chemistry and sensing.

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More information

Accepted/In Press date: 1 September 2016
e-pub ahead of print date: 2 December 2016
Published date: 2 December 2016
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 399870
URI: http://eprints.soton.ac.uk/id/eprint/399870
PURE UUID: 89f511e7-ed03-4859-9851-e0b1ec947e11
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 02 Sep 2016 09:22
Last modified: 13 Nov 2021 05:05

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Contributors

Author: Guanhai Li
Author: Brendan P. Clarke
Author: Jinkyu So

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