title: Superprism effect based on phase velocities.
abstract: The superprism effect has been studied in the past by use of the anomalous group velocities of optical waves in photonic crystals. We suggest the possibility of realizing agile beam steering based on purely phase-velocity effects. We present designs of photonic crystal prisms that might make experimental observation of this effect possible.
authors.affiliation: Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. chiyan@mit.edu
authors.forename: Chiyan
authors.initials: C
authors.lastname: Luo
authors.forename: Marin
authors.initials: M
authors.lastname: Soljacić
authors.forename: J D
authors.initials: JD
authors.lastname: Joannopoulos