Enhanced photorefractive effects of cerium-doped lead barium niobate crystals

Alice Liu, Myeongkyu Lee, Lambertus Hesselink

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Photorefractive properties of a 0.05-wt. % Ce2O 3-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.

Original languageEnglish
Pages (from-to)542-547
Number of pages6
JournalJournal of the Optical Society of America B: Optical Physics
Volume17
Issue number4
DOIs
Publication statusPublished - 2000 Apr

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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