title: Iterative scalar nonparaxial algorithm for the design of Fourier phase elements.
abstract: We propose an iterative algorithm based on our scalar nonparaxial propagator for the design of Fourier diffractive optical elements (DOEs) having features on the order of the illumination wavelength. The simulation results show that our algorithm, using iterative Fourier transform and iterative projection, obtains higher-performance DOEs than a purely scalar paraxial design with the same order of calculation time. Upon verification with the experimental results, we find that our scalar-based design method is valid for DOEs with surprisingly small feature sizes (about half the wavelength) and diffraction angles up to about 37°.
authors.forename: Giang-Nam
authors.initials: GN
authors.lastname: Nguyen
authors.forename: Kevin
authors.initials: K
authors.lastname: Heggarty
authors.forename: Andreas
authors.initials: A
authors.lastname: Bacher
authors.forename: Peter-Jürgen
authors.initials: PJ
authors.lastname: Jakobs
authors.forename: Daniel
authors.initials: D
authors.lastname: Häringer
authors.forename: Philippe
authors.initials: P
authors.lastname: Gérard
authors.forename: Pierre
authors.initials: P
authors.lastname: Pfeiffer
authors.forename: Patrick
authors.initials: P
authors.lastname: Meyrueis