Abstract
To optimize the appearance of photonic band gaps in nitrides, we study photonic crystals based on low dielectric constant materials. By calculating the photonic band structures we investigate the gap opening. In the case of microcavities, we have calculated the cavity modes by the plane wave method and a supercell approach. We have classified the modes using group theory. Our results demonstrate that gallery-like modes are more sensitive to a variation of the filling factor.
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