Spatial and temporal characteristics of electrically fixed holograms in photorefractive strontium-barium niobate
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چکیده
We report measurements of the holographic diffraction efficiency (HDE) of single photorefractive gratings fixed by an externally applied voltage pulse in Sra., Bao..#h206. The polarization grating HDE and decay rate are strongly dependent on the grating spacing and also depend on the intensity of the light beams during the recording and erasing/reconstruction process. Knowledge of the dependence of the fixing process on spatial frequency may be useful for the creation of physical models of local polarization switching in ferroelectrics.
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تاریخ انتشار 1999