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https://doi.org/10.3938/NPSM.69.1295
Effect of Partial Spatial Coherence on Image Sharpness
New Phys.: Sae Mulli 2019; 69: 1295~1298
Published online December 31, 2019;  https://doi.org/10.3938/NPSM.69.1295
© 2019 New Physics: Sae Mulli.

Silin NA1, Doocheol KIM2, Younghun YU2*

1Kanghae Precision System, Hwasung 18487, Korea
2Department of Physics and Research Institute for Basic Sciences, Jeju National University, Jeju 63243, Korea
Correspondence to: yyhyoung@jejunu.ac.kr
Received September 2, 2019; Revised November 4, 2019; Accepted November 4, 2019.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Holographic displays are coherent light processing systems based on interference and diffraction, thus they generally use coherent light source. Highly coherent light makes some undesired effects, such as speckle noise. We studied how the degree of spatial coherence affected the image sharpness of a holographic display. We used rotating ground glass to control the degree of spatial coherence and a non-interferometric holographic system for imaging with simultaneous determination of the spatially coherent illumination. Image sharpness is related to both the temporal and the spatial coherence of the light source; our results demonstrate a direct relationship between spatial coherence and image sharpness.
PACS numbers: 42.40.Kw, 42.40.Lx, 42.30.Wb
Keywords: Digital holographic microscopy, Partial coherence, Image quality


December 2019, 69 (12)
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