Mutually pumped phase-conjugate mirror: fish-head configuration.
A new mutually pumped phase-conjugate mirror configuration is demonstrated in barium titanate crystals, in which the beams travel in a geometrical path similar to the outline of a fish's head. This configuration has a fast (~1-s) response time, for input beam powers of 56 mW, after which a stable phase-conjugate reflectivity of ~28% is attained. The tolerance of the output to both angular and positional misalignment is assessed. Two detailed images were simultaneously phase conjugated, and it was found that 125-microm features could be clearly resolved without cross talk. We tentatively suggest possible mechanisms for this configuration.
Chang
C C
CC
Selviah
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DR