Hybrid phase retrieval approach for reconstruction of in-line digital holograms without twin image

作者：Zhao Jie^*; Wang Dayong; Zhang Fucai; Wang Yunxin

来源：Optical Engineering, 2011, 50(9): 091310.

DOI：10.1117/1.3596203

• in-line digital holography
• twin image
• phase retrieval
• phase flipping
• Fienup algorithm

A hybrid phase retrieval approach is proposed to address the twin image problem in the reconstruction of in-line digital holograms. The approach is a variant iterative transform algorithm and exploits two mostly natural constraints of a sample, namely, the finite transmission and the finite support. Here, the initial sample support estimate is first refined by applying the finite transmission constraint with phase flipping. The approach provides better reconstruction than if only the finite transmission constraint is used and improve the convergence rate of Fienup's algorithm owing to a better estimate of support especially for strong samples with complex structures. Both simulation and experimental results are presented.

• 出版日期2011-9
• 单位北京工业大学