The University of Southampton
University of Southampton Institutional Repository

Two-wave mixing in photorefractive SBN planar waveguides

Robertson, E.E., Eason, R.W., Kaczmarek, M., Chandler, P.J. and Huang, X. (1995) Two-wave mixing in photorefractive SBN planar waveguides At 12th UK National Quantum Electronics Conference (QE12), United Kingdom. 04 - 08 Sep 1995.

Record type: Conference or Workshop Item (Paper)

Abstract

Planar waveguides have been fabricated in SBN:61 and SBN:75 by ion-beam implantation. The implantation was carried out using 2.0MeV H+ ions with doses ranging from 2x10 for the TE mode. These losses are significantly lower than those observed for planar waveguides fabricated previously using sulphur diffusion [1]. Two beam coupling experiments were then carried out on the SBN waveguide where it was observed that the gain direction was the same as that of the bulk crystal. Previously, in both BaTiO3 [2] and KNbO3 [3] planar waveguides fabricated in the same manner, the gain direction for two beam coupling had been shown to reverse. This phenomenon may be due to the ion beam implantation process reducing the waveguide layer and subsequently changing the ratio of impurity atom oxidation states - in the case of BaTiO3, the ratio of Fe2+:Fe3+. It is thought that the predominant photoexcited charge carrier in both BaTiO3 and KNbO3 is changed from the hole to the electron whereas in SBN, the electron remains the predominant carrier even after the implantation process. Modelling of these effects has been undertaken, giving an explanation of why gain reversal should occur in certain photorefractive planar waveguides fabricated by ion-beam implantation.
This paper will discuss the gain and response time of the SBN waveguide in comparison to the bulk and the theoretical predictions of the effects of ion-beam implantation on photorefractive materials

PDF 503P.pdf - Other
Download (54kB)

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: 77070
URI: http://eprints.soton.ac.uk/id/eprint/77070
PURE UUID: 6eef60d8-7fd3-45d2-85ab-2209a79f778a
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: E.E. Robertson
Author: R.W. Eason ORCID iD
Author: M. Kaczmarek
Author: P.J. Chandler
Author: X. Huang

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.

×