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Characterisation of periodically poled photoconductive materials and investigations of new photorefractive materials

Characterisation of periodically poled photoconductive materials and investigations of new photorefractive materials
Characterisation of periodically poled photoconductive materials and investigations of new photorefractive materials
Properties of Rh:BaTiO3 crystals processed in different conditions: In our investigations on novel, infrared-sensitive photorefractive materials we have concentrated on Rh:BaTiO3 to determine both the optimum dopant concentration, and post-growth processing conditions to improve its performance in the infrared. Rhodium doped BaTiO3 has interesting photorefractive properties. which enable us to observe high phase conjugate reflectivities and signal amplification both in the visible and the near-infrared. Firstly, we have studied the performance of Rh:BaTiO3 grown with 400 ppm of rhodium added to the melt. The crystals came from the same boule and were then post-processed separately in different conditions. One sample was left as-grown, the second was annealed in air at 1000°C. which effectively reduced the crystal, and the third sample was annealed in pure oxygen and then quenched to fix the oxygen concentration. Secondly, we have investigated crystals more heavily doped with rhodium: with 2400 ppm and 3200 ppm added to the melt.
Rutherford Appleton Laboratory
Kaczmarek, M.
73185a18-7eee-44a6-a2ff-e3c616bf3547
Smith, P.G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Ross, G.W.
e881119e-2126-442e-a24d-506dac48a4a4
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Anderson, A.A.
646395a3-662e-4ad2-9a45-50ec63847687
Brown, P.
91b30c17-0aa8-470b-9244-43157c48f14b
Maatz, G.
4c87d8bf-d89a-47fe-9249-5bcf74d78c94
Kaczmarek, M.
73185a18-7eee-44a6-a2ff-e3c616bf3547
Smith, P.G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Ross, G.W.
e881119e-2126-442e-a24d-506dac48a4a4
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Anderson, A.A.
646395a3-662e-4ad2-9a45-50ec63847687
Brown, P.
91b30c17-0aa8-470b-9244-43157c48f14b
Maatz, G.
4c87d8bf-d89a-47fe-9249-5bcf74d78c94

Kaczmarek, M., Smith, P.G.R., Ross, G.W., Eason, R.W., Anderson, A.A., Brown, P. and Maatz, G. (1997) Characterisation of periodically poled photoconductive materials and investigations of new photorefractive materials. In, Rutherford Appleton Lab Annual Report June 97. Chilton, GB. Rutherford Appleton Laboratory.

Record type: Book Section

Abstract

Properties of Rh:BaTiO3 crystals processed in different conditions: In our investigations on novel, infrared-sensitive photorefractive materials we have concentrated on Rh:BaTiO3 to determine both the optimum dopant concentration, and post-growth processing conditions to improve its performance in the infrared. Rhodium doped BaTiO3 has interesting photorefractive properties. which enable us to observe high phase conjugate reflectivities and signal amplification both in the visible and the near-infrared. Firstly, we have studied the performance of Rh:BaTiO3 grown with 400 ppm of rhodium added to the melt. The crystals came from the same boule and were then post-processed separately in different conditions. One sample was left as-grown, the second was annealed in air at 1000°C. which effectively reduced the crystal, and the third sample was annealed in pure oxygen and then quenched to fix the oxygen concentration. Secondly, we have investigated crystals more heavily doped with rhodium: with 2400 ppm and 3200 ppm added to the melt.

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More information

Published date: June 1997
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 255690
URI: https://eprints.soton.ac.uk/id/eprint/255690
PURE UUID: 94b53a3e-ce0d-4e74-bb5f-301c9a338bce
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 02 Apr 2001
Last modified: 06 Jun 2018 13:13

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