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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 17, Iss. 4 — Apr. 1, 2000
  • pp: 542–547

Enhanced photorefractive effects of cerium-doped lead barium niobate crystals

Alice Liu, Myeongkyu Lee, and Lambertus Hesselink  »View Author Affiliations


JOSA B, Vol. 17, Issue 4, pp. 542-547 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000542


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Abstract

Photorefractive properties of a 0.05-wt. % Ce2O3-doped Pb0.5Ba0.5Nb2O6 crystal are investigated at visible wavelengths. Compared with the performance of the undoped crystal, sensitivities as high as 3 cm/J represent an increase of almost two orders of magnitude, and a photorefractive gain of 25 cm−1 for extraordinary polarization exhibits a fourfold increase. The saturated diffraction efficiency varies with the intensity ratio of the incident beams owing to strong beam coupling. Photoconductivity at 514.5 nm and dark conductivity are also measured. The intensity dependence of these light-induced parameters suggests a nonsingle-photon behavior. We use a two-center model that involves both a shallow level and a deep level to explain the measured results.

© 2000 Optical Society of America

OCIS Codes
(190.5330) Nonlinear optics : Photorefractive optics
(210.2860) Optical data storage : Holographic and volume memories
(210.4810) Optical data storage : Optical storage-recording materials

Citation
Alice Liu, Myeongkyu Lee, and Lambertus Hesselink, "Enhanced photorefractive effects of cerium-doped lead barium niobate crystals," J. Opt. Soc. Am. B 17, 542-547 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-4-542


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References

  1. A. Y. Liu, M. Lee, M. C. Bashaw, L. Hesselink, and R. S. Feigelson, “Observation and thermal fixing of holographic gratings in lead barium niobate crystal,” Opt. Lett. 22, 187–189 (1997).
  2. M. Lee, R. Feigelson, A. Liu, and L. Hesselink, “Measurements of OH absorption and proton activation in Pb1−xBaxNb2O6 crystals with applications to holographic storage,” Phys. Rev. B 56, 7898–7904 (1997).
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  7. R. A. Vazquez, R. R. Neurgaonkar, and M. D. Ewbank, “Photorefractive properties of SBN:60 systematically doped with rhodium,” J. Opt. Soc. Am. B 9, 1416–1427 (1992).
  8. A. Liu, L. Hesselink, M. Lee, and R. Feigelson, “Electro-optic and photorefractive two beam coupling properties of lead barium niobate crystals,” J. Appl. Phys. 83, 2826–2830 (1998).
  9. M. Jeganathan, M. C. Bashaw, and L. Hesselink, “Trapping the grating envelope in bulk photorefractive media,” Opt. Lett. 19, 1415–1417 (1994).
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