Optics Letters

Multiline phase conjugation at 4 μm in germanium

David A. Depatie, D. C. Haueisen

Published Jun 1, 1980• 22 citations

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.

DOI: 10.1364/ol.5.000252

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