title: Continuous-level phase-only computer-generated hologram realized by dislocated binary gratings.
abstract: It is proposed and experimentally demonstrated that a multilevel or even continuous-level phase-only computergenerated hologram can be realized by use of a binary (two-level) structure. The desired phase shift is invoked by introduction of a lateral dislocation of a high-frequency binary grating within each of the elements that constitute the hologram. An asymmetrically distributed spot array has been generated experimentally, and a uniformity error of 6% and an efficiency of 42% have been measured.
authors.forename: M
authors.initials: M
authors.lastname: Li
authors.forename: A
authors.initials: A
authors.lastname: Larsson
authors.forename: N
authors.initials: N
authors.lastname: Eriksson
authors.forename: M
authors.initials: M
authors.lastname: Hagberg
authors.forename: J
authors.initials: J
authors.lastname: Bengtsson