Phase-change optical nonlinearity as a cellular automaton
Phase-change optical nonlinearity as a cellular automaton
We introduce a cellular automata methodology for studying photonics of light-induced phase transitions. Such transitions underpin some of the most important emerging ‘reconfigurable’ photonic technologies but are a complex tangle of processes developing simultaneously over length and time scales spanning several orders of magnitude: atomic/molecular structural change, band-structure modification, domain/crystallization dynamics, inhomogeneous change of optical properties, and heat/light transport/dissipation. As such they present significant challenges to both theoretical and numerical modelling approaches. Here, we show for the first time that the problem of describing such complex nonlinear optical processes in phase change materials can be reduced to one of just a few free parameters and evolutionary rules in a classic cellular automata (CA) mode.
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Zhang, Liwei
aec3fa53-4a2c-41db-96ea-49e845fa30ef
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
21 June 2021
Zhang, Liwei
aec3fa53-4a2c-41db-96ea-49e845fa30ef
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Zhang, Liwei, MacDonald, Kevin F. and Zheludev, Nikolai
(2021)
Phase-change optical nonlinearity as a cellular automaton.
CLEO/Europe-EQEC 2021 Virtual Conference, , Virtual.
21 - 25 Jun 2021.
1 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
We introduce a cellular automata methodology for studying photonics of light-induced phase transitions. Such transitions underpin some of the most important emerging ‘reconfigurable’ photonic technologies but are a complex tangle of processes developing simultaneously over length and time scales spanning several orders of magnitude: atomic/molecular structural change, band-structure modification, domain/crystallization dynamics, inhomogeneous change of optical properties, and heat/light transport/dissipation. As such they present significant challenges to both theoretical and numerical modelling approaches. Here, we show for the first time that the problem of describing such complex nonlinear optical processes in phase change materials can be reduced to one of just a few free parameters and evolutionary rules in a classic cellular automata (CA) mode.
& more...
Text
phase-change cellular automata
- Author's Original
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Accepted/In Press date: 26 March 2021
Published date: 21 June 2021
Venue - Dates:
CLEO/Europe-EQEC 2021 Virtual Conference, , Virtual, 2021-06-21 - 2021-06-25
Identifiers
Local EPrints ID: 448234
URI: http://eprints.soton.ac.uk/id/eprint/448234
PURE UUID: c3d1cd0e-f866-4f40-b25d-5630a78bab89
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Date deposited: 15 Apr 2021 16:34
Last modified: 17 Mar 2024 06:28
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Contributors
Author:
Liwei Zhang
Author:
Kevin F. MacDonald
Author:
Nikolai Zheludev
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