Sectioning of amplitude images in digital holography

Abstract

In this paper a novel method is proposed to section in-line digital holograms to display only in-focus particles at any particular plane. The effect of zero-order term, conjugate image wave and more importantly the particles outside the plane of interest (defocused images) are simultaneously minimized. Furthermore, all this is accomplished from a single hologram with no additional processing such as subtraction of the reference wave prior to reconstruction or thresholding or other curve-fitting algorithms.