The University of Southampton
University of Southampton Institutional Repository

Investigation of optical periodic poling techniques in strontium barium niobate (SBN)

Smith, P.G.R., Eason, R.W., Robertson, E.E. and Kaczmarek, M. (1995) Investigation of optical periodic poling techniques in strontium barium niobate (SBN) At 12th UK National Quantum Electronics Conference (QE12), United Kingdom. 04 - 08 Sep 1995.

Record type: Conference or Workshop Item (Paper)

Abstract

Periodic Poling of nonlinear optical materials into spatially alternating domain structures, is a successful method of achieving quasi-phase-matching in materials that are not readily phase-matched via conventional birefringent techniques. Of particular interest to the optics community are ferroelectric materials such as LiNbO3 that possess large nonlinear optical coefficients. We extend the discussion here to include other materials such as SBN and BaTiO3, which show good potential for periodic poling, but produced rather than via fixed electrode arrays. Our optical periodic poling uses Cerium doped Strontium Barium Niobate (SrxBa(1-x)N) (x =63 or 75) in which an optical grating is generated via two beam interference. The crystal properties are modified by the alternating light and dark intensity patterns, to permit spatially selective domain re-poling to occur, under the appropriate field/intensity parameters. We have investigated this scheme, with particular importance placed on the precise mechanism responsible for optical re-poling. Specifically we find that a number of the mechanisms suggested in the literature are not applicable. We are suggesting a model based on distortion of the local crystal field by photo-ionization of the cerium dopant. The intense local field causes a distortion in the ferroelectric potential of the nearby Niobium ions. Under random excitation of ions, configurations arise which reduce the coercive field of the material. This effect lasts only for the lifetime of the excited ion.
We also report on the practical design considerations effecting the optimum conditions for optical periodic poling. We have investigated the optimal wavelength, power, temperature and voltage for poling, and consider the best optical set-up for the system. We further discuss our results on using different non-destructive techniques for visualizing domains

PDF 508P.pdf - Other
Download (56kB)

More information

Published date: 1995
Venue - Dates: 12th UK National Quantum Electronics Conference (QE12), United Kingdom, 1995-09-04 - 1995-09-08

Identifiers

Local EPrints ID: 77067
URI: http://eprints.soton.ac.uk/id/eprint/77067
PURE UUID: c43f421f-0ee3-44b7-a888-20b9914ee097
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:34

Export record

Contributors

Author: P.G.R. Smith
Author: R.W. Eason ORCID iD
Author: E.E. Robertson
Author: M. Kaczmarek

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×