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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 25, Iss. 18 — Sep. 15, 2000
  • pp: 1337–1339

Angle-multiplexed hologram storage in LiNbO3:Tb, Fe

Myeongkyu Lee, Shunji Takekawa, Yasunori Furukawa, Kenji Kitamura, Hideki Hatano, and Shiquan Tao  »View Author Affiliations


Optics Letters, Vol. 25, Issue 18, pp. 1337-1339 (2000)
http://dx.doi.org/10.1364/OL.25.001337


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Abstract

We have performed hologram multiplexing with a cw laser at λ=532 nm in a near-stoichiometric LiNbO3 :Tb, Fe crystal that exhibits a visible absorption band induced by UV light. When 50 plane-wave holograms were angle multiplexed from the UV preexposed state, the recording sensitivity gradually decreased, owing to bleaching of the induced absorption. However, a conventional recording schedule of multiplexing many holograms of equal diffraction efficiency can be used in this photochromic material. The gradual decrease in recording sensitivity throughout multiplexing can be compensated for by the increased erasure-time constants of later-written holograms. An M/# of 1.73 was obtained in a crystal of 3.3-mm thickness.

© 2000 Optical Society of America

OCIS Codes
(090.7330) Holography : Volume gratings
(160.5320) Materials : Photorefractive materials
(210.2860) Optical data storage : Holographic and volume memories

Citation
Myeongkyu Lee, Shunji Takekawa, Yasunori Furukawa, Kenji Kitamura, Hideki Hatano, and Shiquan Tao, "Angle-multiplexed hologram storage in LiNbO3:Tb, Fe," Opt. Lett. 25, 1337-1339 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-18-1337

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