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Interferometric Camera based on Wave Front Buffer Memory in a Photorefractive Crystal

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We propose to use a photorefractive sillenite type crystal as a buffer memory in a 90° holographic interferometer arrangement. This system is designed to grab, at a high rate, a series of wave fronts from the object and is not limited by the speed of the data acquisition system. We will present a first validation of this principle with two angularly multiplexed holograms recorded in a BGO crystal and with a cw laser beam. The quality of the interferograms obtained with this wave front memory will be compared to real-time interferograms grabbed on the same experiment. From this first demonstration, we derive the expected performances for an optimized wave front buffer memory.

© 2003 Optical Society of America

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