Optical control of domain structures in strontium barium niobate (SBN)

Graeme W. Ross; Peter G. R. Smith; Paul T. Brown; Robert William Eason

doi:10.1117/12.255484

25 October 1996 Optical control of domain structures in strontium barium niobate (SBN)

Graeme W. Ross, Peter G. R. Smith, Paul T. Brown, Robert William Eason

Proceedings Volume 2849, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II; (1996) https://doi.org/10.1117/12.255484
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We investigate the use of combined optical and electrical techniques to control domain formation in ferroelectric SBN, and examine the periodic structures induced by spatially modulating the light intensity through the crystal during the electrical poling process. The role of photoexcited charges in compensating and stabilizing the induced domain structures is summarized, and the importance of thermal effects established. The process of domain re-ordering is shown to be particularly sensitive to temperature changes close to a domain freezing point of SBN, which occurs near room temperature. The resulting light-induced domain re- ordering is assessed using current monitoring during the repoling process, and photorefractive two-beam coupling of the resulting structures.

Citation Download Citation

Graeme W. Ross, Peter G. R. Smith, Paul T. Brown, and Robert William Eason "Optical control of domain structures in strontium barium niobate (SBN)", Proc. SPIE 2849, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II, (25 October 1996); https://doi.org/10.1117/12.255484

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