title: Self-collimation of light in three-dimensional photonic crystals.
abstract: We calculate three-dimensional (3D) dispersion relations of woodpile and inverse opal photonic crystals. Inspecting the iso-frequency surfaces of the four lowest-order bands at appropriate frequencies we identify regions where self-collimation of light may be expected. These predictions are verified by means of finite-difference time-domain calculations both for high- and low-index photonic crystals.
authors.forename: R
authors.initials: R
authors.lastname: Iliew
authors.forename: C
authors.initials: C
authors.lastname: Etrich
authors.forename: F
authors.initials: F
authors.lastname: Lederer