Band structure optimization of two-dimensional photonic crystals in H-polarization

In the study of photonic crystals, the question arises naturally: Which cry stals produce the largest band gaps? This question is investigated by means of an optimization This question based evolution algorithm which, given tw o dielectric materials, seeks to produce a material distribution within the fundamental cell which produces a maximal band gap at a given point in the spectrum. The case of H-polarization in two dimensions is considered. Seve ral numerical examples are presented. (C) 2000 Academic Press.