Patent ID: 6862121

Claim:
An apparatus for recording a timed sequence of holographic frames of an object comprising: a medium or camera for recording multiple holograms; a source of a plurality of at least partially coherent signal pulses illuminating the object; a source of a plurality of at least partially coherent reference pulses, each of which reference pulses propagates with different optical properties; and optics to direct the plurality of at least partially coherent signal pulses scattered from the object onto the medium or camera and to direct the plurality of at least partially coherent reference pulses onto the medium or camera to multiplex holograms corresponding to the timed sequence of holographic frames recorded in the medium or camera arising from interference between the plurality of signal pulses as scattered from the object and reference pulses as embodied in a value of an optical parameter of the signal pulses scattered from the object and reference pulses for each of the holographic frames, where the source of the plurality of at least partially coherent signal pulses comprises a signal pulse train cavity and the source of a plurality of at least partially coherent reference pulses comprises a separate reference pulse train cavity operating synchronously with the signal pulse train cavity, wherein the reference pulse train cavity generates reference pulses each with a different optical property.