One of advantages of parallel phase-shifting digital holography (PPSDH) compared with other digital holography
techniques is the fast recording of three-dimensional (3D) objects. During the fast recording of a multiplexed hologram
that contains at least three amounts of phase retardation, the optical energy of the hologram becomes smaller. Therefore,
it is important to assess the minimum optical energy that can reconstruct the object with moderate reconstruction error.
In this paper, we investigate experimentally the optical energy to reconstruct the object under weak light condition in
PPSDH. We compare the numerical and experimental results. The experiment is in good agreement with numerical
results when the sensitivity of the image sensor is taken into account.
Parallel phase-shifting digital holography (PPSDH) method can record dynamic three-dimensional events with higher
spatial resolution than that of off-axis digital holography. In PPSDH, all amount of phase retardations are included in a
multiplexed hologram and can be optically implemented by using a phase-mode spatial light modulator (SLM) located in
the reference beam. The SLM can also compensate optical aberration caused by lenses, beam splitters, and air fluctuation
as in adaptive optics. In this presentation, we review our experimental results using stationary two-dimensional object
using a liquid-crystal on Silicon (LCOS) SLM.