Encoding complex fields by using a phase-only optical element.
Opt Lett
; 39(7): 1740-3, 2014 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-24686593
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.
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MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2014
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Article