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Optics Letters

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  • Vol. 23, Iss. 12 — Jun. 15, 1998
  • pp: 960–962

Lifetimes of thermally fixed holograms in LiNbO3:Fe crystals

L. Arizmendi, E. M. de Miguel-Sanz, and M. Carrascosa  »View Author Affiliations


Optics Letters, Vol. 23, Issue 12, pp. 960-962 (1998)
http://dx.doi.org/10.1364/OL.23.000960


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Abstract

The thermal erasure decay at different temperatures of holographic gratings thermally fixed in iron-doped lithium niobate has been exhaustively studied. An activation energy of 0.94 eV was found to be independent of the grating fringe spacing. At a given temperature the decay time is strongly dependent on the grating spacing. This dependence is well fitted to a square fringe spacing law, as predicted theoretically. From the experimental data the room-temperature hologram lifetime under illumination is extrapolated, giving as a result t(years)=(5.2±0.2)Λ2 , with the grating spacing Λ in micrometers.

© 1998 Optical Society of America

OCIS Codes
(050.7330) Diffraction and gratings : Volume gratings
(090.1970) Holography : Diffractive optics
(090.2900) Holography : Optical storage materials

Citation
L. Arizmendi, E. M. de Miguel-Sanz, and M. Carrascosa, "Lifetimes of thermally fixed holograms in LiNbO3:Fe crystals," Opt. Lett. 23, 960-962 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-12-960


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