Perfect digital holographic imaging with high resolutionusing a submillimeter-dimension CCD sensor

• Published in: 物理学前沿：英文版 Vol. 11; no. 6; pp. 149 - 158
• Main Author: Hua-Ying Wang Nan-Yah Xiong Jun-Xiang Li Zhao Dong Xia-Nan Jiang Feng Fan Ya-Guang Geng Qiao-Fen Zhu
• Format: Journal Article
• Language: English
• Published: 2016
• Subjects: CCD; digital; holographic; holography; image-plane; lateral; microscopy; resolution; small-dimension; ulti-mate
• ISSN: 2095-0462; 2095-0470

In order to improve the resolution of digital holography with a common-dimension charge-coupleddevice （CCD） sensor, the point spread functions are briefly derived for the commonly used and practicalpost-magnification, pre-magnification, and image-plane digital holographic microscopic systems. Theultimate resolutions of these systems are analyzed and compared. The results show that the ultimatelateral resolution of pre-magnification digital holography is superior to that of post-magnificationdigital holography in the same conditions. We also demonstrate that the ultimate lateral resolutionof image-plane digital holography has no correlation with the photosensitive dimension of the CCDsensor, and it is not significantly related to the pixel size of the sensor. Moreover, both the ultimateresolution and the imaging quality of image-plane digital holography are superior to that of pre- andpost-magnification digital holographic microscopy. High-resolution imaging, whose resolution is close tothe ultimate resolution of the microscope objective, can be achieved by image-plane digital holographyeven with a submillimeter-dimension sensor. This system, by which perfect imaging can be achieved,is optimal for commonly used digital holographic microscopy. Experimental results demonstrate thecorrectness of the theoretical analysis.