Abstract
Both real-time and double-exposure phase-conjugate interferometries are demonstrated with an eosin-doped gelatin film. The eosin-doped film can generate phase conjugate waves simultaneously or separately by degenerate four-wave mixing (DFWM) and holographic processes. The holographic process differs from the DFWM process in the respect that the eosin-doped film can record spatial information on light like a hologram. The DFWM component has a response time in the order of milliseconds, which is by a factor of four faster than that of the holographic component. The difference in their response times in the two processes is important in real-time and double-exposure phase-conjugate interferometries.
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