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Electro-optically controlled beam deflection and switching via total internal reflection at a domain-engineered interface in LiNbO3

Electro-optically controlled beam deflection and switching via total internal reflection at a domain-engineered interface in LiNbO3
Electro-optically controlled beam deflection and switching via total internal reflection at a domain-engineered interface in LiNbO3
We report a novel beam deflection and switching method that occurs due to the electro-optic effect under applied field when a beam at grazing incidence is incident on an interface between anti-parallel domains in a sample of LiNbO3. We present data obtained for wavelengths of 0.543µm and 1.52µm and compare this with theoretical models. For deflection, improvements can be obtained for both range of angular deflection and transmission uniformity, by faceting the exit face of the device at an optimum angle. A theoretical analysis is presented for this configuration and compared with data obtained for a wavelength of 1.52µm. A practical geometry would permit a deflection of ~140mrad for an applied voltage of 1kV. For switching there are many attractive properties, as TIR is a 100% efficient process this leads to the possibility of high contrast ratios; current data shows contrast ratios greater than 100:1 (20dB). Other properties include relatively simple fabrication procedure, low drive voltages and a wavelength dependence that is less than other electro-optic devices such as Pockels cells.
Boyland, A.J.
7f024ca8-d41f-4aa2-9536-9baa0b8c892e
Mailis, Sakellaris
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Hendricks, J.M.
0dc8ec2a-4a6e-415a-bb7d-417917f4f130
Smith, Peter G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Boyland, A.J.
7f024ca8-d41f-4aa2-9536-9baa0b8c892e
Mailis, Sakellaris
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Hendricks, J.M.
0dc8ec2a-4a6e-415a-bb7d-417917f4f130
Smith, Peter G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020

Boyland, A.J., Mailis, Sakellaris, Hendricks, J.M., Smith, Peter G.R. and Eason, R.W. (2001) Electro-optically controlled beam deflection and switching via total internal reflection at a domain-engineered interface in LiNbO3. International Workshop on Periodic Microstructured Nonlinear Optical Materials. 10 - 13 Jun 2001.

Record type: Conference or Workshop Item (Paper)

Abstract

We report a novel beam deflection and switching method that occurs due to the electro-optic effect under applied field when a beam at grazing incidence is incident on an interface between anti-parallel domains in a sample of LiNbO3. We present data obtained for wavelengths of 0.543µm and 1.52µm and compare this with theoretical models. For deflection, improvements can be obtained for both range of angular deflection and transmission uniformity, by faceting the exit face of the device at an optimum angle. A theoretical analysis is presented for this configuration and compared with data obtained for a wavelength of 1.52µm. A practical geometry would permit a deflection of ~140mrad for an applied voltage of 1kV. For switching there are many attractive properties, as TIR is a 100% efficient process this leads to the possibility of high contrast ratios; current data shows contrast ratios greater than 100:1 (20dB). Other properties include relatively simple fabrication procedure, low drive voltages and a wavelength dependence that is less than other electro-optic devices such as Pockels cells.

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More information

e-pub ahead of print date: 2001
Venue - Dates: International Workshop on Periodic Microstructured Nonlinear Optical Materials, 2001-06-10 - 2001-06-13

Identifiers

Local EPrints ID: 17128
URI: https://eprints.soton.ac.uk/id/eprint/17128
PURE UUID: bac0f4cf-3d9c-49e3-a5f7-52a3aaf2dad5
ORCID for Sakellaris Mailis: ORCID iD orcid.org/0000-0001-8100-2670
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 15 Sep 2005
Last modified: 06 Jun 2018 13:13

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