title: All-frequency effective medium theory of a photonic crystal.
abstract: We consider light propagation in a finite photonic crystal. The transmission and reflection from a one-dimensional system are described in an effective medium theory, which reproduces exactly the results of transfer matrix calculations. We derive simple formulas for the reflection from a semi-infinite crystal, the local density of states in absorbing crystals, and discuss defect modes and negative refraction.
authors.forename: Geesche
authors.initials: G
authors.lastname: Boedecker
authors.forename: Carsten
authors.initials: C
authors.lastname: Henkel