title: Encoding complex fields by using a phase-only optical element.
abstract: We show that the amplitude and phase information from a two-dimensional complex field can be synthesized from a phase-only optical element with micrometric resolution. The principle of the method is based on the combination of two spatially sampled phase elements by using a low-pass filter at the Fourier plane of a 4-f optical system. The proposed encoding technique was theoretically demonstrated, as well as experimentally validated with the help of a phase-only spatial light modulator for phase encoding, a conventional CMOS camera to measure the amplitude of the complex field, and a Shack-Hartmann wavefront sensor to determine its phase.
authors.forename: Omel
authors.initials: O
authors.lastname: Mendoza-Yero
authors.forename: Gladys
authors.initials: G
authors.lastname: Mínguez-Vega
authors.forename: Jesús
authors.initials: J
authors.lastname: Lancis