Holographic photorefractive images storage for applied metrology by interferometry

摘要

We present a holographic camera based on a photorefractive crystal. The historical interest of this recording support is first discussed for its application in holographic interferometry. Afterwards, based on our experiences, a prototype instrument is described and attention is paid on the accuracy and interpretation of the measurements (from the interference pattern to the object displacement). Some applications are presented and show the versatility of the instrument as well as the high quality of the results. Future prospects are then discussed.