Publications

2024
Slobodkin, Yevgeny, and Ori Katz. “Computational wave-based photoacoustic imaging through an unknown thick aberrating layer”. Photoacoustics (2024): , 100584. Web. Publisher's Version
2023
Weinberg, Gil, Elad Sunray, and Ori Katz. “Noninvasive megapixel fluorescence microscopy through scattering layers by a virtual reflection-matrix”. arXiv preprint arXiv:2312.16065 (2023). Web. Publisher's Version
Weinberg, Gil, Uri Weiss, and Ori Katz. “Image scanning lensless fiber-bundle endomicroscopy”. Opt. Express 31, 37050-37057 (2023) (2023). Web. Publisher's Version
Haim, Omri, Jeremy Boger-Lombard, and Ori Katz. “Image-guided Computational Holographic Wavefront Shaping”. arXiv preprint arXiv:2305.12232 (2023). Web. Publisher's Version
Sommer, Tal I., Gil Weinberg, and Ori Katz. “K-space interpretation of image-scanning-microscopy”. Applied Physics Letters 122.14 (2023): , 122, 14, 141106. Web. Publisher's Version
Boger-Lombard, Jeremy, Yevgeny Slobodkin, and Ori Katz. “Towards passive non-line-of-sight acoustic localization around corners using uncontrolled random noise sources”. Scientific Reports 13.1 (2023): , 13, 1, 4952. Web. Publisher's Version
Caravaca-Aguirre, Antonio M, et al.Single-pixel photoacoustic microscopy with speckle illumination”. Intelligent Computing (2023). Web. Publisher's Version
2022
Accanto, Nicolò, et al.A flexible two-photon fiberscope for fast activity imaging and precise optogenetic photostimulation of neurons in freely moving mice”. Neuron (2022). Web. Publisher's Version
Berrebi, Avraham, et al.Optical protection of alkali-metal atoms from spin relaxation”. arXiv preprint arXiv:2209.12360 (2022). Print.
Badt, Noam, and Ori Katz. “Real-time holographic lensless micro-endoscopy through flexible fibers via fiber bundle distal holography”. Nature Communications 13.1 (2022): , 13, 1, 1-9. Web. Publisher's Version
Bertolotti, Jacopo, and Ori Katz. “Imaging in complex media”. Nature Physics 18.9 (2022): , 18, 9, 1008-1017. Web. Publisher's Version
Slobodkin, Yevgeny, et al.Massively degenerate coherent perfect absorber forarbitrary wavefronts”. Science 377.6609 (2022): , 377, 6609, 995-998. Web. Publisher's Version
Choi, Wonjun, et al.Flexible-type ultrathin holographic endoscope for microscopic imaging of unstained biological tissues”. Nature communications 13.1 (2022): , 13, 1, 1-10. Web. Publisher's Version
Gigan, Sylvain, et al.Roadmap on Wavefront Shaping and deep imaging in complex media”. Journal of Physics: Photonics (2022). Web. Publisher's Version
Bloch, Itay M, et al.New constraints on axion-like dark matter using a Floquet quantum detector”. Science advances 85 (2022). Web. Publisher's Version
2021
Arjmand, Payvand, et al.Three-dimensional broadband light beam manipulation in forward scattering samples”. Optics Express 29.5 (2021): , 29, 5, 6563-6581. Web. Publisher's Version
Sommer, Tal I., and Ori Katz. “Pixel-reassignment in ultrasound imaging”. Applied Physics Letters 119.12 (2021): , 119, 12, 123701. Web. Publisher's Version
Rosenfeld, Moriya, et al.Acousto-optic ptychography”. Optica 86 (2021): , 8, 6, 936–943. Web. Publisher's VersionAbstract

Acousto-optic imaging (AOI) enables optical-contrast imaging deep inside scattering samples via localized ultrasound-modulation of scattered light. While AOI allows optical investigations at depths, its imaging resolution is inherently limited by the ultrasound wavelength, prohibiting microscopic investigations. Here, we propose a computational imaging approach that allows optical diffraction-limited imaging using a conventional AOI system. We achieve this by extracting diffraction-limited imaging information from speckle correlations in the conventionally detected ultrasound-modulated scattered-light fields. Specifically, we identify that since ``memory-effect'' speckle correlations allow estimation of the Fourier magnitude of the field inside the ultrasound focus, scanning the ultrasound focus enables robust diffraction-limited reconstruction of extended objects using ptychography (i.e., we exploit the ultrasound focus as the scanned spatial-gate probe required for ptychographic phase retrieval). Moreover, we exploit the short speckle decorrelation-time in dynamic media, which is usually considered a hurdle for wavefront-shaping- based approaches, for improved ptychographic reconstruction. We experimentally demonstrate noninvasive imaging of targets that extend well beyond the memory-effect range, with a 40-times resolution improvement over conventional AOI.

Yeminy, Tomer, and Ori Katz. “Guidestar-free image-guided wavefront shaping”. Science Advances 721 (2021): , 7, 21, eabf5364. Web. Publisher's Version
2020
Shekel, Noam, and Ori Katz. “Using fiber-bending-generated speckles for improved working distance and background rejection in lensless micro-endoscopy”. Opt. Lett. 45.15 (2020): , 45, 15, 4288–4291. Web. Publisher's VersionAbstract

Lensless flexible fiber-bundle-based endoscopes allow imaging at depths beyond the reach of conventional microscopes with a minimal footprint. These multicore fibers provide a simple solution for wide-field fluorescent imaging when the target is adjacent to the fiber facet. However, they suffer from a very limited working distance and out-of-focus background. Here, we carefully study the dynamic speckle illumination patterns generated by bending a commercial fiber bundle and show that they can be exploited to allow extended working distance and background rejection, using a super-resolution fluctuations imaging analysis of multiple frames, without the addition of any optical elements.

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