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Optics Letters

Optics Letters


  • Vol. 24, Iss. 20 — Oct. 15, 1999
  • pp: 1419–1421

Low-temperature thermal fixing of holograms in photorefractive La3Ga5SiO14:Pr3+ crystal

Thomas Nikolajsen and Per Michael Johansen  »View Author Affiliations

Optics Letters, Vol. 24, Issue 20, pp. 1419-1421 (1999)

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Thermal fixing in a La3Ga 5SiO 14:Pr 3+ photorefractive crystal is demonstrated all the way down to room temperature. This, to our knowledge, is the first report of such an effect in any photorefractive material. From the temperature dependence of the process the activation energy of the carriers involved in the fixing process is measured to be EA=0.89 eV . Further, an effective photorefractive charge density of (1.4±0.2)×1016 cm -3 and Debye screening length of (6.8±0.7)×10-6 cm is measured.

© 1999 Optical Society of America

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(190.5330) Nonlinear optics : Photorefractive optics
(210.4810) Optical data storage : Optical storage-recording materials

Thomas Nikolajsen and Per Michael Johansen, "Low-temperature thermal fixing of holograms in photorefractive La3Ga5SiO14:Pr3+ crystal," Opt. Lett. 24, 1419-1421 (1999)

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