title: Multiline phase conjugation at 4 microm in germanium.
abstract: Phase conjugation by degenerate four-wave mixing in the 4-microm region in germanium has been observed for both single-line and multiline radiation. By using single-line output of a DF laser at 3.8 microm, X3 has been measured to be 4 X 10(-1) esu. Phase conjugation of multiline laser output has been achieved with an efficiency of 0.03%, a level that is consistent with the susceptibility found for single-line phase conjugation and the assumption of independent conjugation of each line of the multiline output.
authors.affiliation: Air Force Weapons Laboratory. Kirtland Air Force Base, New Mexico 87117, USA.
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authors.initials: D
authors.lastname: Depatie
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authors.initials: D
authors.lastname: Haueisen