Abstract.
In a photorefractive Bi12SiO20 crystal with high applied electric ac field of square-wave shape a fast two-wave coupling response (less than 1 s) and a slow hologram readout decay (minutes) was found for a wavelength of 633 nm. This can be explained by electron–hole transport with two trap levels. An intensity dependence of the slower complementary grating was found. Illuminating with the readout wave without applied electric field leads to a very slow grating decay (many hours).
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Received: 18 November 1998 / Revised version: 3 February 1999 / Published online: 7 April 1999
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Cedilnik, G., Esselbach, M., Kiessling, A. et al. Photorefractive effects in long, narrow BSO crystals with applied electric field . Appl Phys B 68, 983–987 (1999). https://doi.org/10.1007/s003400050734
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DOI: https://doi.org/10.1007/s003400050734