Holographic and phase conjugate interferometry with nonlinear optical media

Abstract

The utilization of the results obtained in the course of investigations on the absobing dyes, to develop and implement new schems to solve certain practical applications involving phase conjugators with special emphasis on interferometry is reported. Techniques employing two different geometries for the realization of the real-time and time-averaged interferometeres using a combination of dye-doped polymers and photorefractive crystals are discussed here. The ability of a dye-crystal composite structure to generate two independent but overlapping phase conjugate waves which can interfere to reval the phose changes in a test object is discussed and demonstrated using specific cases.