González Hernández, Humberto; Martínez León, Lluís; Soldevila, Fernando ; Araiza Esquivel, María Auxiliadora; Lancis, Jesús; Tajahuerce Romera, Enrique
Resumen:
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.