Polaritons in ann-i-p-isemiconductor superlattice: Bulk and surface modes

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Abstract
We consider the propagation of bulk and surface polaritons of a superlattice consisting of n- and p-doped semiconductors separated by an intrinsic semiconductor (n-i-p-i structure). Using a transfer-matrix method we obtain the bulk modes in an infinite superlattice and the surface modes in a semi-infinite superlattice. The effects of the charge of carriers at the interfaces of the doped semiconductors and the thickness of the layers are analyzed. Our results can be specialized in order to obtain the bulk and surface polaritons of a two-component (binary) dielectric superlattice.