title: Phase imaging using shifted wavefront sensor images.
abstract: We propose a new approach to the complete retrieval of a coherent field (amplitude and phase) using the same hardware configuration as a Shack-Hartmann sensor but with two modifications: first, we add a transversally shifted measurement to resolve ambiguities in the measured phase; and second, we employ factored form descent (FFD), an inverse algorithm for coherence retrieval, with a hard rank constraint. We verified the proposed approach using both numerical simulations and experiments.
authors.forename: Zhengyun
authors.initials: Z
authors.lastname: Zhang
authors.forename: Zhi
authors.initials: Z
authors.lastname: Chen
authors.forename: Shakil
authors.initials: S
authors.lastname: Rehman
authors.forename: George
authors.initials: G
authors.lastname: Barbastathis