Improvement of image quality of phase-only hologram using random phase-free method: verification by simulation and optical experiments

Yumi Yamaguchi; Yuki Nagahama; Yota Yamamoto; Tomoyoshi Shimobaba; Takashi Kakue; Tomoyoshi Ito

doi:10.1117/12.2554240

1 April 2020 Improvement of image quality of phase-only hologram using random phase-free method: verification by simulation and optical experiments

Yumi Yamaguchi, Yuki Nagahama, Yota Yamamoto, Tomoyoshi Shimobaba, Takashi Kakue, Tomoyoshi Ito

Author Affiliations +

Proceedings Volume 11353, Optics, Photonics and Digital Technologies for Imaging Applications VI; 113530P (2020) https://doi.org/10.1117/12.2554240
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

One hologram calculation method is the random phase-free method. When this method is used for an amplitude hologram, a reproduced image with a high-quality image can be obtained. However, when the random phase-free method is used for the kinoform, the reproduced image is degraded. In this study, we applied the kinoform encoding method proposed by Li to the random phase-free method to improve the reproduced image. The effectiveness of the proposed method was compared with that of the conventional method via simulations and optical experiments. Additionally, the parameters were optimized by the simulations, and the effectiveness was verified by numerical experiments.

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Yumi Yamaguchi, Yuki Nagahama, Yota Yamamoto, Tomoyoshi Shimobaba, Takashi Kakue, and Tomoyoshi Ito "Improvement of image quality of phase-only hologram using random phase-free method: verification by simulation and optical experiments", Proc. SPIE 11353, Optics, Photonics and Digital Technologies for Imaging Applications VI, 113530P (1 April 2020); https://doi.org/10.1117/12.2554240

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