title: Optical phase conjugation in Hg1 - xCdxTe.
abstract: 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.
authors.affiliation: Honeywell Corporate Material Sciences Center, Honeywell Corporate Technology Center, Bloomington, Minnesota 55420, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Khan
authors.forename: P W
authors.initials: PW
authors.lastname: Kruse
authors.forename: J F
authors.initials: JF
authors.lastname: Ready