Resolution analysis of pre-magnification digital holographic imaging system with spherical reference wave

Wang Huaying; Liu Feifei; Cheng Hui; Liao Wei; Zhao Baoqun; Yu Mengjie; Liu Zuoqiang

doi:10.3788/HPLPB20132502.0345

Volume 25 Issue 02

Dec. 2012

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(02): 345-349

Chen Han, Yang Hanwu, Zhang Zicheng, et al. Transverse capacitance coupling UV pre-ionization switch[J]. High Power Laser and Particle Beams, 2013, 25: 2035-2039. doi: 10.3788/HPLPB20132508.2035

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Wang Huaying, Liu Feifei, Cheng Hui, et al. Resolution analysis of pre-magnification digital holographic imaging system with spherical reference wave[J]. High Power Laser and Particle Beams, 2013, 25: 345-349. doi: 10.3788/HPLPB20132502.0345

Chen Han, Yang Hanwu, Zhang Zicheng, et al. Transverse capacitance coupling UV pre-ionization switch[J]. High Power Laser and Particle Beams, 2013, 25: 2035-2039. doi: 10.3788/HPLPB20132508.2035

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Resolution analysis of pre-magnification digital holographic imaging system with spherical reference wave

doi: 10.3788/HPLPB20132502.0345

1.
College of Science,Hebei University of Engineering,Handan 056038,China;
2.
School of Information and Electronic Engineering,Hebei University of Engineering,Handan 056038,China

Received Date: 2012-05-23
Rev Recd Date: 2012-07-04
Publish Date: 2013-02-10

Abstract

Abstract

In order to improve the resolution of digital holographic imaging system, the recording and reconstruction processes of a pre-magnification digital holographic system with a spherical reference wave are theoretically deduced. Then the point spread function is obtained and the factors to determine the imaging resolution of this system are analyzed. In the case of the CCD imaging resolution higher than that of the microscope objective, the relationship between the resolution and the recording distance of the system is discussed through the experiment of resolution target USAF. The result show that the resolution of reconstructed images is not sensitive to the recording distance. But as the recording distance is zero, which is named digital image-plane holography, the resolution of reconstructed images is highest. The experimental results are consistent with the theoretical analysis.
- pre-magnification digital holography,
- image-plane digital holography,
- spherical reference wave,
- impulse response,
- resolution

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