Second‐order optical response in electrically polarized sodo‐niobate amorphous thin films: Particularity of multilayer systems
Second‐order optical response in electrically polarized sodo‐niobate amorphous thin films: Particularity of multilayer systems
Herein, our attention is focused on the second‐order optical properties of thermally poled sodo‐niobate amorphous thin films through an original methodology that combines both macroscopic and microscopic second harmonic generation techniques. By probing the geometry and the magnitude of the second‐order nonlinear (SONL) optical response at different scales, a key aspect of thin film's poling mechanisms compared with bulk glasses is demonstrated that lies in the appearance of a charge accumulation at the film/substrate interface and that is described by the Maxwell–Wagner effect. A way to minimize this effect is then proven by promoting an induced built‐in static field in the plane of the film using a microstructured electrode. A SONL optical susceptibility as high as 29 pm V−1 is measured and its geometry and location are controlled at the micrometer scale; it constitutes an improvement of at least one order of magnitude compared with other poled amorphous inorganic materials and is comparable with that of lithium niobate single crystal.
Karam, Lara
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Adamietz, Frédéric
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Michau, Dominique
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Murugan, Ganapathy Senthil
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Cardinal, Thierry
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Fargin, Evelyn
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Rodriguez, Vincent
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Richardson, Kathleen A.
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Dussauze, Marc
4710be1d-aaf7-4c05-8803-edc6597a80e7
30 March 2021
Karam, Lara
0a1238c1-29ee-465c-8bc3-e1d11557165b
Adamietz, Frédéric
1b012c18-29bd-4e12-99e4-55d113253a98
Michau, Dominique
eb51601e-e7e6-42b0-8884-0e44983a518c
Murugan, Ganapathy Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Cardinal, Thierry
09822062-6610-4152-b71d-e6a68e3a1fae
Fargin, Evelyn
584a0241-9c56-4605-ba4c-4ba40d68d1fe
Rodriguez, Vincent
3099493b-3fb5-4bf5-b7a9-ee40d519b70f
Richardson, Kathleen A.
11e43b27-46a6-4b82-a3d8-e7d0e911cbec
Dussauze, Marc
4710be1d-aaf7-4c05-8803-edc6597a80e7
Karam, Lara, Adamietz, Frédéric, Michau, Dominique, Murugan, Ganapathy Senthil, Cardinal, Thierry, Fargin, Evelyn, Rodriguez, Vincent, Richardson, Kathleen A. and Dussauze, Marc
(2021)
Second‐order optical response in electrically polarized sodo‐niobate amorphous thin films: Particularity of multilayer systems.
Advanced Photonics Research, [2000171].
(doi:10.1002/adpr.202000171).
Abstract
Herein, our attention is focused on the second‐order optical properties of thermally poled sodo‐niobate amorphous thin films through an original methodology that combines both macroscopic and microscopic second harmonic generation techniques. By probing the geometry and the magnitude of the second‐order nonlinear (SONL) optical response at different scales, a key aspect of thin film's poling mechanisms compared with bulk glasses is demonstrated that lies in the appearance of a charge accumulation at the film/substrate interface and that is described by the Maxwell–Wagner effect. A way to minimize this effect is then proven by promoting an induced built‐in static field in the plane of the film using a microstructured electrode. A SONL optical susceptibility as high as 29 pm V−1 is measured and its geometry and location are controlled at the micrometer scale; it constitutes an improvement of at least one order of magnitude compared with other poled amorphous inorganic materials and is comparable with that of lithium niobate single crystal.
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e-pub ahead of print date: 30 March 2021
Published date: 30 March 2021
Identifiers
Local EPrints ID: 448644
URI: http://eprints.soton.ac.uk/id/eprint/448644
ISSN: 2699-9293
PURE UUID: 906b17d9-43c1-4bdf-acde-80c4b94691bc
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Date deposited: 29 Apr 2021 16:30
Last modified: 17 Mar 2024 03:03
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Contributors
Author:
Lara Karam
Author:
Frédéric Adamietz
Author:
Dominique Michau
Author:
Ganapathy Senthil Murugan
Author:
Thierry Cardinal
Author:
Evelyn Fargin
Author:
Vincent Rodriguez
Author:
Kathleen A. Richardson
Author:
Marc Dussauze
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