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arXiv · 2402.03786

High sampling rate single-pixel digital holography system employing a DMD and phase-encoded patterns

Humberto González·Lluís Martínez-León·Fernando Soldevila·María Araiza-Esquivel·Jesús Lancis·Enrique Tajahuerce
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Abstract

A single-pixel digital holography system with phase-encoded illumination using a digital micromirror device (DMD) as a spatial light modulator (SLM) is presented. The enhanced switching rate of DMDs, far exceeding the stringent frame-rate of liquid crystal SLMs, allows recording and reconstruction of complex amplitude distributions in just a few seconds. A single amplitude binary modulation device is used for concurrently displaying the phase-encoded sampling patterns, compensating the distortion of the wavefront, and applying phase-shifting, by means of computer generated holograms. Our detection system consists of a simple photodiode that sequentially records the irradiance fluctuations corresponding to the interference between object and reference beams. The system recovers phase and amplitude information even when a diffuser is placed in front of the photodiode.

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Humberto González, Lluís Martínez-León, Fernando Soldevila, María Araiza-Esquivel, Jesús Lancis, Enrique Tajahuerce. 2024-02-06. High sampling rate single-pixel digital holography system employing a DMD and phase-encoded patterns. https://doi.org/10.1364/oe.26.020342

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