Published Papers - SAITA Yusuke

Single-shot Compressive Hyperspectral Imaging Utilizing Both Positive and Negative Diffracted Waves

Yusuke Saita, Ryohei Takahashi, Takanori Nomura （Part： Lead author,　Corresponding author )

Advanced Devices & Instrumentation ( American Association for the Advancement of Science (AAAS) )  6   0080   2025.03  [Refereed]

DOI

Random sparse sampling and compressive sensing based reconstruction for computational optical scanning holography

Naru Yoneda, Masamitsu Sugimoto, Yusuke Saita, Osamu Matoba, Takanori Nomura

Applied Optics   64 ( 7 ) B102 - 108   2025.03  [Refereed]

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Orthogonal matrix of polarization combinations: concept and application to multichannel holographic recording

Shujun Zheng, Jiaren Tan, Hongjie Liu, Xiao Lin, Yusuke Saita, Takanori Nomura, Xiaodi Tan

Opto-Electronic Advances ( Opto-Electronic Advances )  7 ( 10 ) 230180 - 230180   2024.10  [Refereed]

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Adaptive sampling strategy for Fourier single-pixel imaging

Hongjie Liu, Yuki Matsuda, Shujun Zheng, Yusuke Saita, Xiao Lin, Takanori Nomura, Xiaodi Tan

Optics Communications ( Elsevier BV )  573   131027 - 131027   2024.08  [Refereed]

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Computational Optical Scanning Holography

Naru Yoneda, Jung-Ping Liu, Osamu Matoba, Yusuke Saita, Takanori Nomura

Photonics ( MDPI AG )  11 ( 4 ) 347 - 347   2024.04  [Refereed]

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Holographic techniques are indispensable tools for modern optical engineering. Over the past two decades, research about incoherent digital holography has continued to attract attention. Optical scanning holography (OSH) can obtain incoherent holograms using single-pixel detection and structured illumination with Fresnel zone patterns (FZPs). Particularly by changing the size of a detector, OSH can also obtain holograms under coherently illuminated conditions. Since 1979, OSH has continuously evolved. According to the evolution of semiconductor technology, spatial light modulators (SLMs) come to be useful for various imaging fields. By using SLM techniques for OSH, the practicality of OSH is improved. These SLM-based OSH methods are termed computational OSH (COSH). In this review, the configurations, recording and reconstruction methods, and proposed applications of COSH are reviewed.

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Quantitative phase imaging based on motionless optical scanning holography

Naru Yoneda, Osamu Matoba, Yusuke Saita, Takanori Nomura

Optics Letters ( Optica Publishing Group )  48 ( 20 ) 5273 - 5273   2023.10  [Refereed]

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Optical scanning holography (OSH) can be applied to 3D fluorescent imaging. However, the optical setup for OSH is complicated due to the requirement of a phase shifter, a 2D mechanical scanner, and an interferometer. Although motionless optical scanning holography (MOSH) can overcome the problem, quantitative phase imaging (QPI) has not yet been realized because MOSH can only obtain incoherent holograms. If QPI in MOSH is realized, MOSH can be applied to various applications. In this Letter, MOSH-based QPI (MOSH-QPI) is proposed. In addition, a simple description of a coherent mode of OSH is presented. In the proof-of-principle experiment, the spatially divided phase-shifting technique is applied to reduce the number of measurements. The feasibility of MOSH-QPI is confirmed by measuring a phase distribution of a microlens array. MOSH-QPI is also applied to measure practical samples, and its results are compared with the experimental results of the conventional one using a Mach–Zehnder interferometer.

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Polarization imaging by use of optical scanning holography

Naru Yoneda, Yusuke Saita, Takanori Nomura

Optical Review ( Springer Science and Business Media LLC )  30   26 - 32   2023  [Refereed]

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Common-path off-axis single-pixel holographic imaging

Naru Yoneda, Yusuke Saita, Takanori Nomura

Optics Express ( Optica Publishing Group )  30 ( 11 ) 18134 - 18134   2022.05  [Refereed]

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Enhanced Recording Density via Multilevel Phase Retrieval and Correlation-based Multiplexed Recording in Computer-generated Holographic Data Storage

Yusuke Saita, Naru Yoneda, Aoto Matsumoto, Takanori Nomura （Part： Lead author,　Corresponding author )

ITE Transactions on Media Technology and Applications ( Institute of Image Information and Television Engineers )  10 ( 2 ) 69 - 74   2022.04  [Refereed]  [Invited]

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Single-shot compressive hyperspectral imaging with dispersed and undispersed light using a generally available grating

Yusuke Saita, Daiki Shimoyama, Ryohei Takahashi, Takanori Nomura （Part： Lead author,　Corresponding author )

Applied Optics ( The Optical Society )  61 ( 5 ) 1106 - 1106   2022.02  [Refereed]

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Three-dimensional fluorescence imaging through dynamic scattering media by motionless optical scanning holography

Naru Yoneda, Yusuke Saita, Takanori Nomura

Applied Physics Letters ( AIP Publishing )  119 ( 16 ) 161101 - 161101   2021.10  [Refereed]

DOI

Single-shot higher-order transport-of-intensity quantitative phase imaging using deep learning

Naru Yoneda, Shunsuke Kakei, Koshi Komuro, Aoi Onishi, Yusuke Saita, Takanori Nomura

Applied Optics ( The Optical Society )  60 ( 28 ) 8802 - 8802   2021.10  [Refereed]

DOI

Common-path angular-multiplexing holographic data storage based on computer-generated holography

Naru Yoneda, Teruyoshi Nobukawa, Toshiyuki Morimoto, Yusuke Saita, Takanori Nomura

Optics Letters ( The Optical Society )  46 ( 12 ) 2920 - 2920   2021.06  [Refereed]

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Single-shot higher-order transport-of-intensity quantitative phase imaging based on computer-generated holography

Naru Yoneda, Aoi Onishi, Yusuke Saita, Koshi Komuro, Takanori Nomura

Opt. Express ( OPTICAL SOC AMER )  29 ( 4 ) 4783 - 4801   2021.02  [Refereed]

　View Summary

The imaging quality of quantitative phase imaging (QPI) based on the transport of intensity equation (TIE) can be improved using a higher-order approximation for defocused intensity distributions. However, this requires mechanically scanning an image sensor or object along the optical axis, which in turn requires a precisely aligned optical setup. To overcome this problem, a computer-generated hologram (CGH) technique is introduced to TIE-based QPI. A CGH generating defocused point spread function is inserted in the Fourier plane of an object. The CGH acts as a lens and grating with various focal lengths and orientations, allowing multiple defocused intensity distributions to be simultaneously detected on an image sensor plane. The results of a numerical simulation and optical experiment demonstrated the feasibility of the proposed method. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

DOI

Spatially divided phase-shifting motionless optical scanning holography

Naru Yoneda, Yusuke Saita, Takanori Nomura

OSA Continuum ( OPTICAL SOC AMER )  3 ( 12 ) 3523 - 3535   2020.12  [Refereed]

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Motionless optical scanning holography (MOSH) has been proposed for three-dimensional incoherent imaging in single-pixel holography with a simple optical setup. To reduce the measurement time in MOSH, a spatially divided phase-shifting technique is introduced. The proposed method realizes measurements four times faster than the original MOSH, owing to the simultaneous lateral and phase shifts of a time-varying Fresnel zone plate. A hologram reproduced by the proposed method forms a spatially multiplexed phase-shifting hologram similar to parallel phase-shifting digital holography. The effectiveness of the proposed method is numerically and experimentally verified. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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Multiplexed recording based on the reference wave correlation for computer-generated holographic data storage

Yusuke Saita, Aoto Matsumoto, Naru Yoneda, Takanori Nomura （Part： Lead author )

Optical Review ( Springer Science and Business Media {LLC} )  27 ( 4 ) 391 - 398   2020.08  [Refereed]

DOI

Motionless optical scanning holography

Naru Yoneda, Yusuke Saita, Takanori Nomura

Opt. Lett. ( OPTICAL SOC AMER )  45 ( 12 ) 3184 - 3187   2020.06  [Refereed]

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Optical scanning holography (OSH) is an attractive technique since 3D information can be obtained with a single pixel detector. However, OSH requires an interferometer, scanning architecture, and a frequency shifter to scan a time-varying Fresnel zone plate (FZP), which makes the optical setup complicated. To reduce the complexity, the polarization sensitivity of a spatial light modulator (SLM) is applied. The proposed method implements a time-varying FZP with an in-line optical setup by using only an SLM. Observing results for a USAF pattern and a fluorescent bead reveals the feasibility of the new motionless holographic 3D imaging technique. (C) 2020 Optical Society of America

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Computer-generated-hologram-based holographic data storage using common-path off-axis digital holography

Naru Yoneda, Yusuke Saita, Takanori Nomura

Opt. Lett. ( OPTICAL SOC AMER )  45 ( 10 ) 2796 - 2799   2020.05  [Refereed]

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A reconstruction method for multilevel complex encoded data-pages is proposed to increase the recording density of computer-generated-hologram-based holographic data storage by using off-axis digital holography. Although the detection process is based on off-axis digital holography, the proposed method keeps the optical setup a simple and common-path configuration owing to the computer-generated holography. Five-level complex encoded data-pages can be experimentally reconstructed. (C) 2020 Optical Society of America

DOI

Transport of intensity phase imaging under a low signal-to-noise ratio condition

Takanori Nomura, Koshi Komuro, Shunsuke Kakei, Naru Yoneda, Yusuke Saita

Proceedings of SPIE - The International Society for Optical Engineering   11548   2020

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Two phase imaging methods with transport of intensity equation (TIE) under a low signal to noise ratio (SNR) are introduced. One is a TIE phase imaging with deep learning. It is useful for parallel TIE using a diffractive optics to produce defocus images simultaneously. The defocus images are obtained by an optical convolution integral by the calculated blurred point spread functions. However the point spread functions are different from the ideals due to the limited extent and/or limited resolution of the diffractive optics. This means that an SNR of the through-focus images is low. Therefore, deep learning compensates the error. Another is transport-of-intensity computational ghost imaging (TI-CGI). It is a combination of TIE and a computational ghost imaging (CGI). It is useful for noninvasive imaging for the biomedical field because most cells are photo-sensitive and often suffer from phototoxicity. However, CGI can obtain only amplitude information. In the biomedical field, a phase information is important to know the physical parameters. To achieve, under weak illumination, it is difficult to obtain through-focus images with high SNRs. Therefore, combination of TIE and CGI is useful.

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Numerical evaluation of transport-of-intensity phase imaging with oblique illumination for refractive index tomography

Koshi Komuro, Yusuke Saita, Yosuke Tamada, Takanori Nomura

Proceedings Digital Holography and Three-Dimensional Imaging 2019     2019.05

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A scanless phase retrieval method based on the transport of intensity equation is proposed for refractive index tomography. A phase distribution is measured from defocused intensity distributions obtained with oblique illumination of different tilt angles.

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