Photonics Research, 2016, 4 (1): 01000001, Published Online: Sep. 26, 2016  

Resolution enhancement of optical scanning holography with a spiral modulated point spread function Download: 1029次

Author Affiliations
1 Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
2 Institute of Applied Physics, University of Electronic Science and Technology of China, 610054 Chengdu, China
Abstract
In optical scanning holography, one pupil produces a spherical wave and another produces a plane wave. They interfere with each other and result in a fringe pattern for scanning a three-dimensional object. The resolution of the hologram reconstruction is affected by the point spread function (PSF) of the optical system. In this paper, we modulate the PSF by a spiral phase plate, which significantly enhances the lateral and depth resolution. We explain the theory for such resolution enhancement and show simulation results to verify the efficacy of the approach.

Ni Chen, Zhenbo Ren, Haiyan Ou, Edmund Y. Lam. Resolution enhancement of optical scanning holography with a spiral modulated point spread function[J]. Photonics Research, 2016, 4(1): 01000001.

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