Digital spatially incoherent Fresnel holography

TLDR

The paper introduces a method for recording digital holograms using incoherent illumination. The method records three holograms of a 3D object under different DOE phase factors, then superposes them digitally to produce a complex‑valued Fresnel hologram. Reconstruction of the hologram in software reveals the 3D properties of the object.

Abstract

We present a new method for recording digital holograms under incoherent illumination. Light is reflected from a 3D object, propagates through a diffractive optical element (DOE), and is recorded by a digital camera. Three holograms are recorded sequentially, each for a different phase factor of the DOE. The three holograms are superposed in the computer, such that the result is a complex-valued Fresnel hologram. When this hologram is reconstructed in the computer, the 3D properties of the object are revealed.