Abstract
A technique for quasi real-time holographic interferometry with reflection type objects is presented. It is based on fast sequences of holographic double exposure interferograms recorded in sillenite-type photorefractive BTO crystals. The application of the phase shifting method for automatic quantitative evaluation of the obtained interferograms under the special constraint of short storage times in fast photorefractive crystals is investigated. Approaches to overcome this difficulty by applying a time dependent external electric field are discussed. Experimental results for dynamic analysis of reflecting type objects are presented.
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