KNbO 3 crystals for photorefractive applications
作者： Marko Zgonik , Carolina Medrano , Michael J Ewart , Hermann Wuest , Peter Guenter
DOI: 10.1117/12.200598
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摘要: Characterization and optimization of KNbO 3 crystals for photorefractive applications over an extended spectral range is described. Intrinsic properties are used to describe the refractive index response space-charge field gratings. Extrinsic that important effect, such as absorption, photoconductivity, charge transport, trapping, discussed. Some results on IR doped with Fe, Ni, Cu, Ce, Mn, Co presented. Post growth annealing at temperatures 400 900°C in a controlled atmosphere shown modify charge-transport parameters, therefore also modifying time photoinduced changes.
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