Optical phase conjugation in Hg1 - xCdxTe.
We have observed phase-conjugate signals at 12, 77, and 295 K in n-type Hg1 - xCdxTe (x = 0.216-0.232) using degenerate four-wave mixing at 10.6 microm. The external power-reflection coefficient increases with the product of pump-power densities and saturates at 9%. The values of the third-order nonlinear susceptibility X(3) derived from these measurements agree with the theory of Wolff and Pearson [Phys. Rev. Lett. 17, 1015 (1966)] for X(3) that is due to conduction-band nonparabolicity.
Khan
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MA
Honeywell Corporate Material Sciences Center, Honeywell Corporate Technology Center, Bloomington, Minnesota 55420, USA.
Kruse
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PW
Ready
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JF