Work

Single-shot off-axis hologram reconstruction by using fractional Fourier transform domain filtering based on spatial-domain extending and hologram partitioning

Year: 2025

Type: article

Abstract: A method of single-shot off-axis digital hologram reconstruction by extending and partitioning the hologram in its spatial domain, filtering in its fractional Fourier transform domain, and merging in the reconstruction imaging domain is presented, which can enhance the resolution of the reconstructed amplitude and phase maps. In the experiment, the reconstruction results of the amplitude-type and phase-type objects demonstrate the capability for improving the reconstruction resolution in effect. The procedure of partitioning the expanded hologram of spatial domain zero-padding into two slightly redundant halves is described in detail. The noise evaluation parameter for partition line noise is defined, and the effect of redundant partitioning on reducing partition line noise is verified quantitatively.

Source: Optics Express

DOI: 10.1364/oe.568962

Authors: Yiwei Liu, Wanying Cui, Zhuqing Jiang, Chunyan Zhou, Yuanze Ma

Institution: Beijing University of Technology

Language: English

Topic: Digital Holography and Microscopy

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities