title: Laser projection using generalized phase contrast.
abstract: We demonstrate experimental laser projection of a gray-level photographic image with 74% light efficiency using the generalized phase contrast (GPC) method. In contrast with a previously proposed technique [Alonzo, New J. Phys. 9, 132 (2007)], a new approach to image construction via GPC is introduced. An arbitrary phase shift filter eliminates the need for high-frequency modulation and conjugate phase encoding. This lowers device performance requirements and allows practical implementation with currently available dynamic spatial light modulators.
authors.affiliation: Optics and Plasma Research Department, Risø National Laboratory, Technical University of Denmark, DK-4000 Roskilde, Denmark. jesper.gluckstad@risoe.dk
authors.forename: Jesper
authors.initials: J
authors.lastname: Glückstad
authors.forename: Darwin
authors.initials: D
authors.lastname: Palima
authors.forename: Peter John
authors.initials: PJ
authors.lastname: Rodrigo
authors.forename: Carlo Amadeo
authors.initials: CA
authors.lastname: Alonzo