Three-dimensional time resolved measurements from holographic records

Some work with scatter plate holographic systems is reviewed, proceeding from single exposure recordings of transilluminated amplitude distributions to time resolved recordings of three-dimensional phase distributions. The display of sequences of holographic records of an event developing in time may be facilitated by transforming the original holographic records into a single multiplex hologram. An effective form of this techniquw is described, it results in a single reflecting phase element located at a plane near the reconstructed images. Reconstructions belonging to separate instants of time are recovered by selection in the pupil plane.