Optimization of the window function for digital hologram apodization in reconstructing the holographic image

作者：Zhang, Yancao^*; Fan, Qi; Li, Xinchao; Shi, Jianjun; Yang, Baiyu

来源：Journal of Optics, 2013, 15(10): 105406.

DOI：10.1088/2040-8978/15/10/105406

• digital holography
• apodization
• window function
• diffraction effect

In this paper, an optimal window function used for digital hologram apodization in reconstructing the holographic image is presented, which is generated by a cosine window convolving with a rectangle window and has a flat top because of the rectangle shape of the hologram. The window's parameters are optimized using a genetic algorithm to make sure that the sidelobes of the window are minimum. Numerical simulation results show that the new window has a sidelobe lower than that of the Tukey window, and experimental results show that apodization using this window can suppress the diffraction effectively in reconstructing the holographic image.

• 出版日期2013-10
• 单位中国人民解放军空军工程大学