title: Iterative design of a holographic beamformer.
abstract: A design method is presented for computing the phase functions of an energy efficient system using two holographic elements for converting a Gaussian beam into a uniform beam with rectangular support in the far field of the source. The method is based on a modification of the Gerchberg-Saxton algorithm which includes an x-y separability constraint on the phase of one of the holographic elements. A beamforming system was fabricated using this method, and experimental results were obtained which support the design approach.
authors.forename: M T
authors.initials: MT
authors.lastname: Eismann
authors.forename: A M
authors.initials: AM
authors.lastname: Tai
authors.forename: J N
authors.initials: JN
authors.lastname: Cederquist