Intensity-dependent absorption and its modelling in infrared sensitive rhodium-doped BaTiO<sub>3</sub>
We investigated the intensity-dependent absorption coefficient of photorefractive Rh:BaTiO<sub>3</sub> from the maximum (633 nm) to the near infra-red end (1.06 µm) of this crystal's sensitivity. A numerical photorefractive model, incorporating dual-wavelength illumination and a sec...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
1996-05.
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Subjects: | |
Online Access: | Get fulltext |
Summary: | We investigated the intensity-dependent absorption coefficient of photorefractive Rh:BaTiO<sub>3</sub> from the maximum (633 nm) to the near infra-red end (1.06 µm) of this crystal's sensitivity. A numerical photorefractive model, incorporating dual-wavelength illumination and a secondary photorefractive centre, gives good agreement with experiment and shows that such a two-centre model is sufficient to explain the results obtained in the visible and infrared wavelength region. |
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