Numerical verification of parallel two-step phase-shifting digital holography for single-shot imaging

Ryuju Todo; Tomoyoshi Inoue; Sota Hashimoto; Shun Notte; Kenzo Nishio; Sudheesh K. Rajput; Osamu Matoba; Yasuhiro Awatsuji

doi:10.1117/12.3007508

20 September 2023 Numerical verification of parallel two-step phase-shifting digital holography for single-shot imaging

Ryuju Todo, Tomoyoshi Inoue, Sota Hashimoto, Shun Notte, Kenzo Nishio, Sudheesh K. Rajput, Osamu Matoba, Yasuhiro Awatsuji

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Proceedings Volume 12608, Biomedical Imaging and Sensing Conference; 126080D (2023) https://doi.org/10.1117/12.3007508
Event: Optics and Photonics International Congress, 2023, Yokohama, Japan

Abstract

We propose a method to realize parallel two-step phase-shifting digital holography with a single exposure. In the proposed method, the intensity distribution of the reference wave is derived from a single hologram recorded by parallel four-step phase-shifting digital holography. By using the derived intensity distribution of the reference wave, the numerical processing used in two-step phase-shifting digital holography is applied to each pair of two phase-shifted holograms derived from the single hologram. We numerically verified that the proposed method can obtain the complex amplitude of an object wave with a single exposure. In addition, we found that the proposed method can improve the quality of the amplitude image in comparison to parallel four-step phase-shifting digital holography.

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Ryuju Todo, Tomoyoshi Inoue, Sota Hashimoto, Shun Notte, Kenzo Nishio, Sudheesh K. Rajput, Osamu Matoba, and Yasuhiro Awatsuji "Numerical verification of parallel two-step phase-shifting digital holography for single-shot imaging", Proc. SPIE 12608, Biomedical Imaging and Sensing Conference, 126080D (20 September 2023); https://doi.org/10.1117/12.3007508

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KEYWORDS

Holograms

3D image reconstruction

Digital holography

Phase shifts

Complex amplitude

Image quality

Image restoration

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