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Conference Paper
Photorefractive Effects, Materials, and Devices
La Colle sur Loup France
June 17, 2003
ISBN: 1-55752-755-5
Material Characterization: Inorganic (MCI)

High temperature photorefractive effects in α-phase proton-exchanged LiNbO3 waveguides

G. de la Paliza, A. García-Cabañes, M. Carrascosa, and J. M. Cabrera

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Photorefractive effects in ±-phase proton exchanged LiNbO3 waveguides have been studied at temperatures between 50°C and 150°C, a range of major interest in connection with the fixing process. Experiments of recording, light and dark decays, fixing and optical developing, have been carried out. On increasing the temperature, the recording kinetics exhibits a transient peak in the diffraction efficiency η max , the rise and decay times being progressively shorter at higher temperatures. After fixing at 90°C (where η max ≈ 6%) and subsequent optical developing at room temperature, the η dev value rises up to 2.5η max ≈ 15%. This value decays in a few hours in the dark, but can be fully recovered by further developing. As in bulk crystals, the results can be qualitative understood in terms of the standard proton-fixing model.

© 2003 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3730) Integrated optics : Lithium niobate
(160.5320) Materials : Photorefractive materials

G. de la Paliza, A. García-Cabañes, M. Carrascosa, and J. M. Cabrera, "High temperature photorefractive effects in α-phase proton-exchanged LiNbO3 waveguides," in Photorefractive Effects, Materials, and Devices, P. Delaye, C. Denz, L. Mager, and G. Montemezzani, eds., Vol. 87 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 172.

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