Hologram reconstruction using a digital micromirror device

The aim of this work is an advancement of digital holographic interferometr y by using a digital micromirror device (DMD) for real-time display of inte rferometric fringes. The theory describing the formation of the diffracted image produced by a coherently illuminated DMD is presented. Digital hologr ams of simple structures are calculated assuming plane and spherical refere nce waves, respectively. These synthetic holograms are used to control the micromirrors of the DMD, which now acts as a reflective hologram. Experimen tal holographic reconstructions of synthetic holograms prove the feasibilit y of DMDs in principle for this aim. Further experimental results show the reconstructed interferogram of fields recorded by digital holography and su perposed numerically. This opens a new range of applications in digital hol ographic interferometry. (C) 2001 Society of Photo-Optical Instrumentation Engineers.