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Encoding complex fields by using a phase-only optical element
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DOI：10.1364/OL.39.001740.png)
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Abstract
En 中文
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. (C) 2014 Optical Society of America
Keywords:
SPATIAL LIGHT-MODULATOR
HOLOGRAMS
FILTERS
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