A theoretical investigation into the 3D point spreading situation of a scanning holographic imaging system based on random phase encoding

作者：Xiao Chun-jing; Zhou Xin^*; Hu Jian-ping; Xie Jian; Wang Yun; Guo Xue-fan

来源：Optics and Laser Technology, 2013, 50: 20-24.

DOI：10.1016/j.optlastec.2013.02.005

• Optical scanning holography
• Random-phase encoding
• Point spreading

In this paper, by analyzing variance and noise probability distribution of the reconstructed image, a point spreading situation of adjacent section under the conventional optical scanning holography (OSH) method and a new one based on random-phase encoding (RPE) are studied. Simulation results show that, compared to the conventional OSH at the same de-focus distance, the RPE-OSH can lead the distribution of reconstructed adjacent sections to be more homogeneous and manifested as a speckle-like pattern on the in-focus image. Further study shows that the complex amplitude probability distribution of adjacent section meets the shape of Gaussian curve, and noise can be filtered out by some corresponding filters. So aliasing and interference on the in-focus image can be removed.

• 出版日期2013-9
• 单位四川大学