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Coherent control of light in metasurfaces

Coherent control of light in metasurfaces
Coherent control of light in metasurfaces
Coherent interaction of light with functional materials of substantially subwavelength thickness has given rise to the intriguing opportunity to turn any of the diverse optical functionalities that ultrathin films may provide "on" or "off" at will. Such dynamic control over the expression of thin film optical properties is possible as light-matter interactions in travelling light waves and standing light waves are very different. Optical standing waves formed by coherent, counterpropagating light waves have nodes and anti-nodes where either the electric field or the magnetic field vanishes, while the magnitude of the other is enhanced. A planar film or metasurface, which can only interact with the electric field of a normally incident plane wave, may thus be placed at an electric field node, where absence of electric field renders it perfectly transparent, or at an electric field anti-node, where its interaction with the wave will be enhanced due to the increased local electric field. Importantly, such high-contrast linear control of light with light occurs on a timescale of few femtoseconds and at arbitrarily low intensities down to single photons, implying 100 THz bandwidth, potential application in quantum technology and opportunities for energy-efficient signal processing with orders of magnitude higher bandwidth than current technology.

We will give an overview over our recent breakthroughs enabled by coherent control of metasurface functionalities in areas such as coherent perfect absorption, all-optical signal processing analogous to logical NOT, XOR and AND functions at up to 40 Gbit/s with energy consumption as low as 2.5 fJ/bit, 1 ps "dark pulse" generation, electro-optical modulation, excitation selective spectroscopy, all-optical image processing and image analysis, control of polarization, propagation direction and focusing of light and more.

Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
MacDonald, Kevin
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
MacDonald, Kevin
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Plum, Eric, MacDonald, Kevin and Zheludev, Nikolai (2018) Coherent control of light in metasurfaces , St Petersburg, Russian Federation. 04 - 08 Jun 2018.

Record type: Conference or Workshop Item (Other)

Abstract

Coherent interaction of light with functional materials of substantially subwavelength thickness has given rise to the intriguing opportunity to turn any of the diverse optical functionalities that ultrathin films may provide "on" or "off" at will. Such dynamic control over the expression of thin film optical properties is possible as light-matter interactions in travelling light waves and standing light waves are very different. Optical standing waves formed by coherent, counterpropagating light waves have nodes and anti-nodes where either the electric field or the magnetic field vanishes, while the magnitude of the other is enhanced. A planar film or metasurface, which can only interact with the electric field of a normally incident plane wave, may thus be placed at an electric field node, where absence of electric field renders it perfectly transparent, or at an electric field anti-node, where its interaction with the wave will be enhanced due to the increased local electric field. Importantly, such high-contrast linear control of light with light occurs on a timescale of few femtoseconds and at arbitrarily low intensities down to single photons, implying 100 THz bandwidth, potential application in quantum technology and opportunities for energy-efficient signal processing with orders of magnitude higher bandwidth than current technology.

We will give an overview over our recent breakthroughs enabled by coherent control of metasurface functionalities in areas such as coherent perfect absorption, all-optical signal processing analogous to logical NOT, XOR and AND functions at up to 40 Gbit/s with energy consumption as low as 2.5 fJ/bit, 1 ps "dark pulse" generation, electro-optical modulation, excitation selective spectroscopy, all-optical image processing and image analysis, control of polarization, propagation direction and focusing of light and more.

Full text not available from this repository.

More information

Published date: 4 June 2018
Venue - Dates: Days of Diffraction 2018, St Petersburg, Russian Federation, 2018-06-04 - 2018-06-08

Identifiers

Local EPrints ID: 417533
URI: https://eprints.soton.ac.uk/id/eprint/417533
PURE UUID: 187a0880-7bab-4a40-acb5-4721690498c5
ORCID for Eric Plum: ORCID iD orcid.org/0000-0002-1552-1840
ORCID for Kevin MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 02 Feb 2018 17:30
Last modified: 02 Feb 2018 17:30

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