Photoinduced Anisotropy of Photoconductivity in AmorphousAs50Se50Films

We show that photoinduced optical anisotropy in amorphous ${\mathrm{As}}_{50}{\mathrm{Se}}_{50}$ films is accompanied by photoinduced anisotropy of photoconductivity while both photoinduced effects are optically reversible. We suggest that microanisotropic fragments which are the feature of amorphous chalcogenide films do affect not only the light absorption but also the transport of nonequilibrium charge carriers.