Results 11 to 20 of about 1,387 (173)
Applied Sciences, 2018 Dedicated simulations show that the application of time-domain ptychography to angular photo-electron streaking data allows shot-to-shot reconstruction of individual X-ray free electron laser pulses.
Tobias Schweizer +5 more
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Single-pixel ptychography [PDF]
Optics Letters, 2021 Ptychography is a predominant non-interferometric technique to image large complex fields but with quite a narrow working spectrum, because diffraction measurements require dense array detection with an ultra-high dynamic range. Here we report a single-pixel ptychography technique that realizes non-interferometric and non-scanning complex-field imaging
Meng Li +8 more
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Optica, 2021 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
Rosenfeld, Moriya +5 more
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Optica Advanced Photonics Congress 2022, 2022 We present a ptychography method to fuse data from two image sensors capturing different parts of the diffraction patterns and thereby extending the numerical aperture.
Kira Maathuis +2 more
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Scientific Reports, 2023 Direct observation of Cu in Cu-chabazite (CHA) zeolite has been achieved by electron ptychography using the Wigner distribution deconvolution. The imaging properties of ptychographically reconstructed images were evaluated by comparing the intensities of
Kazutaka Mitsuishi +6 more
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Journal of Synchrotron Radiation, 2023 Spectro-ptychography offers improved spatial resolution and additional phase spectral information relative to that provided by scanning transmission X-ray microscopes.
Jaianth Vijayakumar +8 more
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Scientific Reports, 2015 AbstractWe report an experimental ptychography measurement performed in fly-scan mode. With a visible-light laser source, we demonstrate a 5-fold reduction of data acquisition time. By including multiple mutually incoherent modes into the incident illumination, high quality images were successfully reconstructed from blurry diffraction patterns.
Huang, X +7 more
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Enhancing Dose Efficiency of Optimum Bright-Field Scanning Transmission Electron Microscopy Using a Phase-Shifted Electron Probe. [PDF]
Small MethodsABSTRACT Observing beam‐sensitive materials using scanning transmission electron microscopy (STEM) at low electron dose conditions is challenging due to the low signal‐to‐noise ratio (SNR) of images. In this study, we aimed to improve the SNR of optimum bright‐field (OBF) STEM by introducing phase shifts to the incident electron probe using lens ...
Nogami M, Seki T, Ooe K, Shibata N.
europepmc +2 more sources
Reflective Fourier ptychography [PDF]
Journal of Biomedical Optics, 2016 The Fourier ptychography technique in reflection mode has great potential applications in tissue imaging and optical inspection, but the current configuration either has a limitation on cut-off frequency or is not practical. By placing the imaging aperture stop outside the illumination path, the illumination numerical aperture (NA) can be greater than ...
Shaun, Pacheco +2 more
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