Anomalous polarity-dependent electrooptic effect in cubic ZnS and ZnTe

Abstract

An electrooptic effect with noncubic symmetry has been observed in cubic single crystals of ZnS and ZnTe. It is anomalous in that for one field polarity the result is an apparent decrease in the birefringence for small voltages rather than the expected increase. A likely explanation is the presence in our samples of a small polar strain, which is partially removed by one polarity electric field. © 1966 The American Institute of Physics.