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Optics Letters

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  • Vol. 23, Iss. 15 — Aug. 1, 1998
  • pp: 1164–1166

Photorefractive two-step recording in a piezoelectric La3Ga5SiO14 crystal doped with praseodymium

Thomas Nikolajsen, Per Michael Johansen, E. Dubovik, T. Batirov, and R. Djalalov  »View Author Affiliations


Optics Letters, Vol. 23, Issue 15, pp. 1164-1166 (1998)
http://dx.doi.org/10.1364/OL.23.001164


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Abstract

The first experimental verification to the authors' knowledge of efficient two-step recording in a photorefractive and piezoelectric crystal of La3Ga5SiO14:Pr3+ with cw laser light (I<20W/cm2) is reported. We found nonlinear behavior of the photorefractive sensitivity and photovoltaic current, indicating that the excitation process is connected to excitation of 4f2 electrons of the Pr3+ dopant through an intermediate level to the conduction band. This two-step nature of the photorefractive effect makes the crystal an exciting new candidate for applications in holographic storage.

© 1998 Optical Society of America

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(160.4330) Materials : Nonlinear optical materials
(160.5140) Materials : Photoconductive materials
(160.5690) Materials : Rare-earth-doped materials
(190.5330) Nonlinear optics : Photorefractive optics
(210.4810) Optical data storage : Optical storage-recording materials

Citation
Thomas Nikolajsen, Per Michael Johansen, E. Dubovik, T. Batirov, and R. Djalalov, "Photorefractive two-step recording in a piezoelectric La3Ga5SiO14 crystal doped with praseodymium," Opt. Lett. 23, 1164-1166 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-15-1164


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