195 citations · 650 across the 44 of their papers we have counts for
16 papers · 1 filter
EDoF-NeRF: extended depth-of-field neural radiance fields using a coded aperture camera
Yoshiyuki Shirasaki, Ryoichi Horisaki
We propose a method for extending the depth-of-field (DoF) to construct high-fidelity neural radiance fields (NeRF) -- an emerging technique for rendering photorealistic novel view…
Cathodoluminescence Wavefront Retrieval
Izzah Machfuudzoh, Ryoichi Horisaki, Takumi Sannomiya
Free-electron-based nanoscopy enables the study of optical excitations in materials with deep-subwavelength spatial resolution, with cathodoluminescence (CL) being one of the most…
Photonic decision making using optical frequency difference detection in mutually-coupled semiconductor lasers
Hidetoshi Taira, Takatomo Mihana, Shun Kotoku +4
As electronic computing approaches its performance limits, photonic accelerators have emerged as promising alternatives. Photonic accelerators exploiting semiconductor-laser synchr…
Phase retrieval via Zernike phase contrast microscopy with an untrained neural network
Zinan Zhou, Keiichiro Toda, Rikimaru Kurata +3
Zernike's phase contrast microscopy (PCM) is among the most widely used techniques for observing phase objects, but it lacks quantitative nature, as it cannot directly provide phas…
Diffraction casting
Ryosuke Mashiko, Makoto Naruse, Ryoichi Horisaki
Optical computing is considered a promising solution for the growing demand for parallel computing in various cutting-edge fields, requiring high integration and high speed computa…
Asymmetric leader-laggard cluster synchronization for collective decision-making with laser network
Shun Kotoku, Takatomo Mihana, André Röhm +2
Photonic accelerators have recently attracted soaring interest, harnessing the ultimate nature of light for information processing. Collective decision-making with a laser network,…
Conflict-free joint decision by lag and zero-lag synchronization in laser network
Hisako Ito, Takatomo Mihana, Ryoichi Horisaki +1
With the end of Moore's Law and the increasing demand for computing, photonic accelerators are garnering considerable attention. This is due to the physical characteristics of ligh…
Quantitative phase retrieval for Zernike phase-contrast microscopy
Rikimaru Kurata, Keiichiro Toda, Genki Ishigane +3
We present a single-image numerical phase retrieval method for Zernike phase-contrast microscopy (ZPM) that addresses halo and shade-off artifacts, as well as the weak phase condit…
Upconversion time-stretch infrared spectroscopy
Kazuki Hashimoto, Takuma Nakamura, Takahiro Kageyama +4
High-speed measurement confronts the extreme speed limit when the signal becomes comparable to the noise level. In the context of broadband mid-infrared spectroscopy, state-of-the-…
Mathematical modeling of morphological changes in photochromic crystals by catastrophe theory
Hirotsugu Suzui, Kazuharu Uchiyama, Kingo Uchida +3
Photochromic diarylethene is known to exhibit reversible photoisomerization under irradiation with ultraviolet (UV) and visible light. Besides reversible optical properties upon li…
Analysis of temporal structure of laser chaos by Allan variance
Naoki Asuke, Nicolas Chauvet, André Röhm +6
Allan variance has been widely utilized in evaluating the stability of the time series generated by atomic clocks and lasers, in time regimes ranging from short to extremely long.…
Extrapolated speckle-correlation imaging
Yuto Endo, Jun Tanida, Makoto Naruse +1
Imaging through scattering media is a longstanding issue in a wide range of applications, including biomedicine, security, and astronomy. Speckle-correlation imaging is promising f…
Roadmap on Wavefront Shaping and deep imaging in complex media
Sylvain Gigan, Ori Katz, Hilton B. de Aguiar +42
The last decade has seen the development of a wide set of tools, such as wavefront shaping, computational or fundamental methods, that allow to understand and control light propaga…
Order recognition by Schubert polynomials generated by optical near-field statistics via nanometre-scale photochromism
Kazuharu Uchiyama, Sota Nakajima, Hirotsugu Suzui +6
We have previously observed an irregular spatial distribution of photon transmission through a photochromic crystal photoisomerized by a local optical near-field excitation, manife…
Quantitative phase imaging with molecular vibrational sensitivity
Miu Tamamitsu, Keiichiro Toda, Ryoichi Horisaki +1
Quantitative phase imaging (QPI) quantifies the sample-specific optical-phase-delay enabling objective studies of optically-transparent specimens such as biological samples, but la…
Molecular contrast on phase-contrast microscope
Keiichiro Toda, Miu Tamamitsu, Ryoichi Horisaki +1
An optical microscope enables image-based findings and diagnosis on microscopic targets, which is indispensable in many scientific, industrial and medical settings. Majority of mic…