The University of Southampton
University of Southampton Institutional Repository

Strong photorefractive response of Rh:doped BaTiO3 at red and infrared wavelengths

Kaczmarek, M., Ross, G.W. and Eason, R.W. (1995) Strong photorefractive response of Rh:doped BaTiO3 at red and infrared wavelengths At 12th UK National Quantum Electronics Conference (QE12), United Kingdom. 04 - 08 Sep 1995.

Record type: Conference or Workshop Item (Paper)


BaTiO3 crystal is one of the most efficient photorefractive materials, showing strong beam coupling and phase conjugation effects. Its attractive properties are, however, normally limited to visible wavelengths. In order to improve its infrared response, a new type of BaTiO3 has been grown [1] with additional impurities, mainly rhodium. We have investigated this new Rh:BaTiO3 to characterise its response and optical parameters. Our first results show an enhanced absorption at red and infrared wavelengths [2] and high reflectivities in self-pumped phase conjugate configurations. Additionally, strong laser-induced effects have been observed [3].
The aim of the studies presented in this contribution was to provide information about photorefractive centres present in Rh:BaTiO3. Using dual-wavelength illumination we were able to investigate more thoroughly the laser-induced change in absorption. Laser-induced absorption and transparency was measured at both visible (514.5, 633 and 750 nm) and infrared (800 and 1060 nm) wavelengths. Further, we have successfully modelled the observed changes, using numerical simulation of photorefractive centres, and achieved a good agreement between theory and experiment.
The strong changes of absorption influence the beam-coupling processes and phase conjugation. We will present the results of extremely high two-beam coupling gain, namely bigger than 20,000, obtained in only a 3 mm thick crystal. We believe that this is the highest photorefractive gain ever reported. We will discuss this experimental data together with theoretical modelling

PDF 489P.pdf - Other
Download (61kB)

More information

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


Local EPrints ID: 77077
PURE UUID: 54a1d563-4c00-4e63-b8cc-6c41f047c6ce
ORCID for R.W. Eason: ORCID iD

Catalogue record

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

Export record


Author: M. Kaczmarek
Author: G.W. Ross
Author: R.W. Eason ORCID iD

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 supports OAI 2.0 with a base URL of

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.