Magnetic and Optical Anisotropy in Garnets Induced by Linearly Polarized Light

摘要

A theoretical model is developed which clarifies the reason for the appearance of a magnetic and/or optical anisotropy in garnets under illumination with linearly polarized light. The model is base on the calculation of the occupancies' kinetics of anisotropic impurity centers localized in different garnet sublattices. A comparison of experimental data for the magnetic yttrium-iron garnet doped with cobalt (YIG:Co) and the non-magnetic Ca_3Mn_2Ge_3O_(12)(CaMnGe) garnet to the results of the model is performed which leads to a good agreement.