[001] interface anisotropy using degree of polarization

There are a number of techniques that can be used to study the heterointerfacial properties of quantum well and superlattice devices. These include ex-situ techniques such as low temperature photoluminescence and cathodoluminescence. The luminescence studies have been mainly directed toward evaluating the exciton linewidth when there is potential fluctuation due to variation in either the thickness or the strain in the well. Polarization measurements of luminescence from the (001) surface are conducted and the observations from the study of the interfacial structure of quantum wells are discussed.