Investigation on dark decay of two-color holograms in near-stoichiometric LiNbO<sub>3</sub> and LiTaO<sub>3</sub>

Youwen Liu; Kenji Kitamura; Shunji Takekawa; Ganesan Ravi; Masaru Nakamura; Hideki Hatano

doi:10.1117/12.572502

28 January 2005 Investigation on dark decay of two-color holograms in near-stoichiometric LiNbO₃ and LiTaO₃

Youwen Liu, Kenji Kitamura, Shunji Takekawa, Ganesan Ravi, Masaru Nakamura, Hideki Hatano

Proceedings Volume 5646, Nonlinear Optical Phenomena and Applications; (2005) https://doi.org/10.1117/12.572502
Event: Photonics Asia, 2004, Beijing, China

Abstract

We have investigated the dark decay mechanism by measuring dark decay time constants of two-color holograms recorded in undoped and slightly doped near-stoichiometric LiNbO₃ and LiTaO₃ crystals in the temperature range from 50 to 200 °C. All the samples in this work obey an Arrhenius-type dependence of time constant on absolute temperature, and yield nearly same activation energies of 1.08 eV. The results show that proton compensation mechanism dominated the dark decay process. Lifetimes of holograms at room temperature in LiTaO₃ are one order of magnitude longer than that in LiNbO₃ if having the same proton concentration.

Citation Download Citation

Youwen Liu, Kenji Kitamura, Shunji Takekawa, Ganesan Ravi, Masaru Nakamura, and Hideki Hatano "Investigation on dark decay of two-color holograms in near-stoichiometric LiNbO₃ and LiTaO₃", Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, (28 January 2005); https://doi.org/10.1117/12.572502

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