Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays

Abstract Coherence properties of different light sources and how they affect the image quality of holographic display are investigated. Temporal coherence is related to the intrinsic spectrum bandwidth of the light source, while spatial coherence can be affected by the size of the light source and p...

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Autores principales:	Yuanbo Deng, Daping Chu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6362347b252145748ede8af8ae3e3adf
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spelling	oai:doaj.org-article:6362347b252145748ede8af8ae3e3adf2021-12-02T12:32:16ZCoherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays10.1038/s41598-017-06215-x2045-2322https://doaj.org/article/6362347b252145748ede8af8ae3e3adf2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06215-xhttps://doaj.org/toc/2045-2322Abstract Coherence properties of different light sources and how they affect the image quality of holographic display are investigated. Temporal coherence is related to the intrinsic spectrum bandwidth of the light source, while spatial coherence can be affected by the size of the light source and propagation distance in use. These two coherence properties are measured for various light sources of diode-pumped solid-state (DPSS) laser, laser diode (LD), light emitting diode (LED), super luminescent light emitting diode (sLED) and micro light emitting diode (mLED) in different settings, together with the quality of the holographic reconstructed images. Although the image sharpness and speckle are related to both coherence parameters, our results and subsequent analysis show that the spatial coherence can be linked directly to the image sharpness and the temporal coherence to the speckle. This will provide a quantitative way not only to optimize the image quality between uniformity and sharpness but also to determine the safety power level for different light sources when viewing the produced images by human eyes directly.Yuanbo DengDaping ChuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuanbo Deng Daping Chu Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays
description	Abstract Coherence properties of different light sources and how they affect the image quality of holographic display are investigated. Temporal coherence is related to the intrinsic spectrum bandwidth of the light source, while spatial coherence can be affected by the size of the light source and propagation distance in use. These two coherence properties are measured for various light sources of diode-pumped solid-state (DPSS) laser, laser diode (LD), light emitting diode (LED), super luminescent light emitting diode (sLED) and micro light emitting diode (mLED) in different settings, together with the quality of the holographic reconstructed images. Although the image sharpness and speckle are related to both coherence parameters, our results and subsequent analysis show that the spatial coherence can be linked directly to the image sharpness and the temporal coherence to the speckle. This will provide a quantitative way not only to optimize the image quality between uniformity and sharpness but also to determine the safety power level for different light sources when viewing the produced images by human eyes directly.
format	article
author	Yuanbo Deng Daping Chu
author_facet	Yuanbo Deng Daping Chu
author_sort	Yuanbo Deng
title	Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays
title_short	Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays
title_full	Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays
title_fullStr	Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays
title_full_unstemmed	Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays
title_sort	coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6362347b252145748ede8af8ae3e3adf
work_keys_str_mv	AT yuanbodeng coherencepropertiesofdifferentlightsourcesandtheireffectontheimagesharpnessandspeckleofholographicdisplays AT dapingchu coherencepropertiesofdifferentlightsourcesandtheireffectontheimagesharpnessandspeckleofholographicdisplays
_version_	1718394097637523456

Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays

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