INTERFEROMETRY WITH A NOVEL COMPOSITE-MATERIAL

An interesting application of optical phase conjugation is phase conju gate interferometry. We report here a new approach to real-time interf erometry which combines the high phase conjugate efficiency of photore fractive crystals and the fast response times offered by dye-doped pol ymer films by using a composite structure. The ability of this materia l to generate two independent but overlapping phase conjugate waves. w hich can interfere to reveal the phase changes in a test object, is di scussed and demonstrated with a specific example.