title: Algebraic reconstruction of a small-scale wave front.
abstract: We show that a small-scale wave front can be reconstructed by an algebraic procedure from its intensity distribution in the focal plane, except for the ambiguities of the piston phase and the point-symmetrical solution of the complex conjugate. Details of the reconstruction procedure for a 3 x 3 wave front are presented, and the effectiveness of this procedure for a contaminated case is shown by computer simulation. A method for overcoming the ambiguity problem resulting from the point-symmetrical solution is also suggested.
authors.forename: T
authors.initials: T
authors.lastname: Takahashi
authors.forename: J C
authors.initials: JC
authors.lastname: Dainty
authors.forename: H
authors.initials: H
authors.lastname: Takajo