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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 31 — Nov. 1, 2004
  • pp: 5778–5783

Comparison of two-color hologram lifetimes of near-stoichiometric lithium niobate and of tantalate crystals

Youwen Liu, Kenji Kitamura, Shunji Takekawa, Ganesan Ravi, Masaru Nakamura, Yasunori Furukawa, and Hideki Hatano  »View Author Affiliations


Applied Optics, Vol. 43, Issue 31, pp. 5778-5783 (2004)
http://dx.doi.org/10.1364/AO.43.005778


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Abstract

Lifetimes of two-color nonvolatile holograms recorded in undoped or in slightly doped near-stoichiometric lithium niobate and tantalate crystals were measured and compared by extrapolation of the high-temperature data. A proton-compensation mechanism dominated the dark decay and yielded similar activation energies, of 1.05 and 1.10 eV, for near-stoichiometric lithium niobate and tantalate crystals, respectively. The lifetime of holograms in lithium tantalate was 1 order of magnitude longer than that in lithium niobate with the same proton concentration, which was consistent with our theoretical estimation. The projected lifetime of two-color holograms in lithium tantalate without observable OH- absorption is longer than 50 years.

© 2004 Optical Society of America

OCIS Codes
(090.2900) Holography : Optical storage materials
(160.5320) Materials : Photorefractive materials
(210.2860) Optical data storage : Holographic and volume memories

History
Original Manuscript: April 13, 2004
Revised Manuscript: July 25, 2004
Manuscript Accepted: August 17, 2004
Published: November 1, 2004

Citation
Youwen Liu, Kenji Kitamura, Shunji Takekawa, Ganesan Ravi, Masaru Nakamura, Yasunori Furukawa, and Hideki Hatano, "Comparison of two-color hologram lifetimes of near-stoichiometric lithium niobate and of tantalate crystals," Appl. Opt. 43, 5778-5783 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-31-5778

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