Presentation Information
[9p-PB6-4]Computational Optical Scanning Holography Based on Scanning-Coordinate Phase Addition
〇Keisuke Ono1, Kenya Sugimoto1, Yushi Hasegawa1, Fan Wang1, Tomoyoshi Ito1, Tomoyoshi Shimobaba1 (1.Graduate School of Engineering, Chiba Univ.)
Keywords:
digital holography,optical scanning holography,Fresnel zone plate
This presentation proposes a method for obtaining complex holograms in computational optical scanning holography (COSH) without using multiple phase-shifting measurements. In the proposed method, a linear phase is added according to the scanning coordinates of the Fresnel zone plate (FZP) displayed on an SLM or similar device. This phase addition shifts the complex hologram component in the frequency domain, enabling its separation and extraction as a sideband. The proposed method reduces the number of measurements and effectively utilizes the spatial bandwidth of the FZP. The acquisition of reconstructed images was confirmed through numerical simulations.