We have obtained coherent operation of multiple pulsed dye oscillators by using a single phase conjugate mirror as a common end mirror for up to three physically distinct cavities. The phase conjugate mirror operates via the photorefractive effect in a crystal of BaTiO3, through a four-wave mixing process that requires no external pumping beams. The system has been operated in both a narrow-band (0.05 nm) and a broadband (0.25 nm) configuration.
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White et al. (1987) studied this question.
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