Quasinondestructive holographic recording in photochromic LiNbO3

We have observed quasinondestructive holographic storage with a continuous-wave laser at lambda = 532 nm in near-stoichiometric LiNbO3 doped with Tb and Fe. This crystal showed an exceptionally long grating decay time and also exhibited a fast color change upon exposure to ultraviolet (UV) light. It...

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Bibliographic Details
Published in:Physical review letters 2000-01, Vol.84 (5), p.875-878
Main Authors: Lee, M, Takekawa, S, Furukawa, Y, Kitamura, K, Hatano, H
Format: Article
Language:English
Online Access:Get full text
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Summary:We have observed quasinondestructive holographic storage with a continuous-wave laser at lambda = 532 nm in near-stoichiometric LiNbO3 doped with Tb and Fe. This crystal showed an exceptionally long grating decay time and also exhibited a fast color change upon exposure to ultraviolet (UV) light. It was demonstrated that the grating recorded from the UV-exposed, colored state can be continuously read out over 9 h at a reading intensity as high as 8 mW/cm(2). In addition, the written grating could be easily erased with UV illumination which returned the crystal back to the original colored state.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.84.875