O. P. Nestiorkin, Y. Shershakov, B. Zel'dovich, N. Bogodaev, L. Ivleva
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Phase-locked detection of running interference pattern in photorefractive SBN
Holographic grating in a photorefractive crystal may be recorded due to the diffusion of electrons or their drift in external or intrinsic photovoltaic dc field as a result of illumination by a static interference pattern. Those traditional mechanisms are well studied [1]. Running interference pattern may be registered by the phase-locked detection in the externally applied ac field. That mechanism was realized in the paraelectric crystal Bi12TiO20 (BTO) [2,3]. In this work we have performed the phase-locked detection mechanism in the ferroelectric photorefractive crystal SBN:Ce.
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