In this paper we report the experimental and theoretical result that the photorefractive properties of pure and doped lithium niobate single crystals show a close relationship with anomalous photovoltaic (APV) current. The dopant dependence of sensitivity of two-wave mixing is discussed with the APV current in theory. The product of quantum efficiency and effective drift length ΦL ph is obtained.
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Chen et al. (1992) studied this question.
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