Polarization anisotropy in optical reflection spectra of structures with open nanowires

The optical reflection spectra of structures with open nanowires created fr om ZnCdSe/ZnSe heterostructures are investigated. A significant polarizatio n anisotropy of the reflection is observed over a wide spectral range, incl uding the exciton resonance regions of the wire, the barrier, and the subst rate. The effect of additional laser pumping on the reflection spectrum is examined. The observed effects are interpreted in terms of a model of an ef fective anisotropic layer. A numerical simulation of the reflection spectra based on this model is in good qualitative agreement with experiment. (C) 1999 American Institute of Physics. [S1063-7826(99)01409-X].