title: Phase retrieval using nonlinear diversity.
abstract: We extend the Gerchberg-Saxton algorithm to phase retrieval in a nonlinear system. Using a tunable photorefractive crystal, we experimentally demonstrate the noninterferometric technique by reconstructing an unknown phase object from optical intensity measurements taken at different nonlinear strengths.
authors.affiliation: Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: Chien-Hung
authors.initials: CH
authors.lastname: Lu
authors.forename: Christopher
authors.initials: C
authors.lastname: Barsi
authors.forename: Matthew O
authors.initials: MO
authors.lastname: Williams
authors.forename: J Nathan
authors.initials: JN
authors.lastname: Kutz
authors.forename: Jason W
authors.initials: JW
authors.lastname: Fleischer