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.
No takes yet. Share an insight, caveat, or question.
Walrod et al. (1990) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: