A Comparative study of the photorefractive effect in Bi12SiO20 Crystals
Autor: | F.P. Strohkendl, P. Tayebati, R.W. Hellwarth |
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Rok vydání: | 1987 |
Zdroj: | Topical Meeting on Photorefractive Materials, Effects, and Devices. |
DOI: | 10.1364/prm.1987.wb1 |
Popis: | We perform beam-coupling and erasure experiments in four different nominally undoped Bi12SiO20 (BSO) crystals. We use the theory of electron-hole competition1,2 in photorefractive gratings to analyze our data. We determine the diffusion- lengths Ke−1, Kn−1 for electrons and holes, the ratio S of hole to electron absorption, the Debye screening wavevector ko, the total absorption coefficient and the quantum efficiency. |
Databáze: | OpenAIRE |
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