title: Quantitative assessment of noise reduction with partial spatial coherence illumination in digital holographic microscopy.
abstract: Improving image quality in digital holographic microscopy is achievable by using partial spatial coherence (PSC) illumination instead of fully coherent illumination. This Letter presents simple theoretical models to quantitatively assess the reduction of noise as a function of both the spatial coherence of the illumination and the defocus distance of the noise source. The first developed model states that the effect of the PSC can be studied by discretizing the field of view in the plane of the noise source. The second model, following a continuous approach, corroborates the discrete model and extends it. Experimental results confirm theoretical expectations.
authors.forename: Jérôme
authors.initials: J
authors.lastname: Dohet-Eraly
authors.forename: Catherine
authors.initials: C
authors.lastname: Yourassowsky
authors.forename: Ahmed El
authors.initials: AE
authors.lastname: Mallahi
authors.forename: Frank
authors.initials: F
authors.lastname: Dubois