Optical nonlinearities due to subband structures in Al0.08In0.92Sb/InSb superlattices
- 15 January 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (3) , 218-220
- https://doi.org/10.1063/1.102836
Abstract
We report the first observation of optical nonlinearities due to subband structures in the growth direction of an n‐type superlattice by four‐wave mixing in an end‐firing configuration. We observe a nearly eightfold increase in the third‐order optical susceptibility when the electric fields of the CO2 laser are changed from a parallel to a perpendicular orientation to the plane of an Al0.08In0.92Sb/InSb superlattice. No change is observed in a control InSb epilayer under similar conditions.Keywords
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