Spatial spectrum of coherence signal for a defocused object images in digital holographic microscopy with partially spatially coherent illumination
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Published:2018-07-25
Issue:3
Volume:42
Page:414-423
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ISSN:2412-6179
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Container-title:Computer Optics
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language:
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Short-container-title:Kompʹût. opt.
Author:
Klychkova D. M.,Ryabukho V. P.
Abstract
We study the effect of a decrease in the magnitude of the coherence signal in high-frequency spatial spectrum for a defocused object image in transmission digital holographic microscopy with quasimonochromatic partially spatially coherent illumination. A theoretical description and results of the numerical simulation of the effect for a point scattering object are presented. The effect is experimentally studied by illuminating layered quasi-point scatterers with partially spatially coherent laser light obtained using a moving scatterer. The comparison of the experimental and theorybased numerical results shows them to be in good agreement.
Publisher
Samara State National Research University
Subject
Electrical and Electronic Engineering,Computer Science Applications,Atomic and Molecular Physics, and Optics