9 June 2006 Holographic gratings in pure and Mg-doped near-stoichiometric LiTaO3 induced by deep-ultraviolet light
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Proceedings Volume 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information; 62520A (2006) https://doi.org/10.1117/12.676517
Event: Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 2005, Varna, Bulgaria
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.
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F. Juvalta, F. Juvalta, Ph. Dittrich, Ph. Dittrich, Germano Montemezzani, Germano Montemezzani, M. Jazbinsek, M. Jazbinsek, Peter Günter, Peter Günter, Shunji Takekawa, Shunji Takekawa, Kenji Kitamura, Kenji Kitamura, "Holographic gratings in pure and Mg-doped near-stoichiometric LiTaO3 induced by deep-ultraviolet light", Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 62520A (9 June 2006); doi: 10.1117/12.676517; https://doi.org/10.1117/12.676517
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