title: Observation of a new interference phenomenon in internal conical diffraction.
abstract: Conical diffraction is observed in biaxial materials when a beam of light is directed along one of the two optic axis directions. When the beam is directed close to but not along an optic axis, a rich interference pattern is observed beyond the material. We observe some of the previously predicted low intensity interference patterns, representing a qualitatively new optical phenomenon in biaxial materials.
authors.forename: R T
authors.initials: RT
authors.lastname: Darcy
authors.forename: J G
authors.initials: JG
authors.lastname: Lunney
authors.forename: J F
authors.initials: JF
authors.lastname: Donegan