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Proceedings Paper

Holographic gratings in pure and Mg-doped near-stoichiometric LiTaO3 induced by deep-ultraviolet light
Author(s): F. Juvalta; Ph. Dittrich; Germano Montemezzani; M. Jazbinsek; Peter Günter; Shunji Takekawa; Kenji Kitamura
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Paper Abstract

Interband photorefractive gratings induced by deep ultraviolet light at λUV = 257 nm are investigated in pure and Mg-doped near-stoichiometric LiTaO3. By controlling the stoichiometry, the response time and dynamic range of the interband photorefractive effect can be very much improved. Measured time constants are in the order of a few tens of milliseconds for UV light intensities of about 100 mW/cm2. Further, we report that Mg doping of near-stoichiometric LiTaO3 increases the grating response rate by a factor of 50 compared with the one in undoped crystals. In Mg-doped near-stoichiometric LiTaO3, quasi-fixing of holographic gratings with UV light and nondestructive readout in the visible has been observed. These quasi-fixed gratings are written in the deep traps of the crystal.

Paper Details

Date Published: 9 June 2006
PDF: 6 pages
Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 62520A (9 June 2006); doi: 10.1117/12.676517
Show Author Affiliations
F. Juvalta, ETH Zürich (Switzerland)
Ph. Dittrich, ETH Zürich (Switzerland)
Germano Montemezzani, Univ. de Metz (France)
M. Jazbinsek, ETH Zürich (Switzerland)
Peter Günter, ETH Zürich (Switzerland)
Shunji Takekawa, National Institute for Material Science (Japan)
Kenji Kitamura, National Institute for Material Science (Japan)


Published in SPIE Proceedings Vol. 6252:
Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information

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