Abstract
We report the direct recording of electron-based photorefractive hologram in nominally undoped Bi12TiO20 crystals using 780 nm wavelength light without pre-exposure or any kind of previous processing. A lower intensity absorption grating is also detected. Pre-exposure with shorter wavelength produces an extended lifetime hole-based complementary grating on another photoactive center level and leads to enhanced recording.
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42.70.Nq; 42.70.Ln; 42.70.Gi; 42.65.Hw
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dos Santos, P., Frejlich, J. & Carvalho, J. Direct near infrared photorefractive recording and pre-exposure controlled hole–electron competition with enhanced recording in undoped Bi12TiO20. Appl. Phys. B 81, 651–655 (2005). https://doi.org/10.1007/s00340-005-1935-x
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DOI: https://doi.org/10.1007/s00340-005-1935-x