Investigation of the effective aperture: Towards high-resolution Fresnel incoherent correlation holography

doi:10.1364/OE.439449

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	Investigation of the effective aperture: Towards high-resolution Fresnel incoherent correlation holography
	F. Ma; Y. Li; X. Wang; Y. Du; Q. Gong; J. Cheng; L. Qin; J. Su and Y. Hu
刊名	Optics Express
	2021
卷号	29 期号:20 页码:31549-31560
ISSN号	10944087
DOI	10.1364/OE.439449
英文摘要	Fresnel incoherent correlation holography (FINCH) shows great advantages of coherent-light-source-free, high lateral resolution, no scanning, and easy integration, and has exhibited great potential in recording three-dimensional information of objects. Despite the rapid advances in the resolution of the FINCH system, little attention has been paid to the influence of the effective aperture of the system. Here, the effective aperture of the point spread function (PSF) has been investigated both theoretically and experimentally. It is found that the effective aperture is mainly restricted by the aperture of the charge-coupled device (CCD), the pixel size of the CCD, and the actual aperture of the PSF at different recording distances. It is also found that the optimal spatial resolution exists only for a small range of recording distance, while this range would become smaller as the imaging wavelength gets longer, leading to the result that the optimal spatial resolution is solely determined by the actual aperture of the PSF. By further combining the FINCH system with a microscopy system and optimizing the recording distance, a spatial resolution as high as 0.78 m at the wavelength of 633 nm has been obtained, enabling a much higher quality imaging of unstained living biological cells compared to the commercial optical microscope. The results of this work may provide some helpful insights into the design of high-resolution FINCH systems and pave the way for their application in biomedical imaging. 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
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内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65362]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	F. Ma,Y. Li,X. Wang,et al. Investigation of the effective aperture: Towards high-resolution Fresnel incoherent correlation holography[J]. Optics Express,2021,29(20):31549-31560.
APA	F. Ma.,Y. Li.,X. Wang.,Y. Du.,Q. Gong.,...&J. Su and Y. Hu.(2021).Investigation of the effective aperture: Towards high-resolution Fresnel incoherent correlation holography.Optics Express,29(20),31549-31560.
MLA	F. Ma,et al."Investigation of the effective aperture: Towards high-resolution Fresnel incoherent correlation holography".Optics Express 29.20(2021):31549-31560.