Abstract
The HOLIDDO (holographic interferometry by double-direction observation) instrument is dedicated to the characterization of transparent media in a microgravity environment. Characterization is accomplished by holographic interferometry in two perpendicular directions in order to reconstruct the three-dimensional object. An Fe:LiNbO3 crystal is selected for storing holograms, which makes real-time interferometry possible. A depth of field of 30 mm allows us to study rather large objects with a resolution of better than 50 μm.
© 1990 Optical Society of America
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