NONLINEAR POLARITONS IN ANISOTROPIC SUPERLATTICES

In this paper, we present a dielectric theory for polaritons in semico nductor superlattices. The coherent optical field is classical, satisf ying Maxwell's equations, while the carriers are treated fully quantum -mechanically. The dielectric function is obtained through the solutio ns of modified semiconductor Bloch equations for superlattices, descri bed as an anisotropic medium. The equations combine the most relevant many-body and effective dimensionality effects. Numerical results are presented for GaAs/AlGaAs superlattices.