Results 91 to 100 of about 3,087,724 (237)
Laser &Photonics Reviews, EarlyView.Nonlocal leaky mode metasurfaces reconstruct multiplexed holograms directly from unfiltered thermal light. High‐Q leaky guided modes compress broadband halogen emission into narrowband channels, enhancing temporal coherence a hundredfold, while a single nanohole array encodes independent images addressed by mode, angle, and polarization, establishing ...
Rajat Kumar Sinha, Mo Mojahedi
wiley +1 more source
APL PhotonicsHolographic display is considered the holy grail of photorealistic three-dimensional (3D) visualization technology because it can provide arbitrary wavefronts related to the essential visual cues of 3D images.
Shuo Sun +5 more
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Dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates
Opto-Electronic AdvancesInteractive holography offers unmatched levels of immersion and user engagement in the field of future display. Despite of the substantial progress has been made in dynamic meta-holography, the realization of real-time, highly smooth interactive ...
Yuncheng Liu +6 more
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Weak Measurement for Characterizing Effective Jones Matrices of Phase Gradient Metasurfaces
Laser &Photonics Reviews, EarlyView.Spin dependent deflection from a PB phase gradient metasurface is converted by two dimensional weak measurement into a centroid map, where the amplitude ratio, phase difference, and phase gradient produce distinct spatial features. These effective parameters are then retrieved directly from the centroid response.
Peng Tang +8 more
wiley +1 more source
Millimeter‐Scale Single‐Layer RGB Achromatic Metalens via Time‐Simultaneity‐Free Design
Laser &Photonics Reviews, EarlyView.This study proposes a time‐simultaneity‐free (TSF) approach that circumvents the size‐bandwidth trade‐off in multi‐wavelength metasurfaces. By strategically abandoning time‐simultaneity via wavelength‐dependent DC phase biases, a single‐layer, polarization‐insensitive RGB achromatic metalens is scaled to 1‐millimeter diameter.
Atsushi Hasegawa +7 more
wiley +1 more source
, 2022 During the last years the research area of holography has undergone important developments with regard to its theoretical principles and practical applications.
Doch, M., Ferri, L., Gewalt, M.
core
Autofocusing of optical scanning holography based on entropy minimization [PDF]
, 2015 In optical scanning holography, extracting distance of object is an indispensable step for numerical reconstruction. In this paper, we use entropy as a measurement to achieve autofocusing under different situations.
Lam, E +7 more
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Interpolation-Filtering Method for Image Improvement in Digital Holography
Applied SciencesDigital holography is actively used for the characterization of objects and 3D-scenes, tracking changes in medium parameters, 3D shape reconstruction, detection of micro-object positions, etc.
Alexander V. Kozlov +5 more
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Misalignment‐Robust Dynamic Cascaded Holography Accelerated by Deep Neural Networks
Laser &Photonics Reviews, EarlyView.Cascaded holography has mainly been studied using metasurfaces. Here, we demonstrate a fully dynamic cascaded holographic system based on two phase‐only spatial light modulators. A misalignment‐tolerant optimization method preserves image quality despite alignment errors, making cascaded holographic systems simpler, more reliable, and easier to use in ...
Gyeongsu Jin +2 more
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Small, EarlyView.Four‐dimensional STEM comprises a vast portfolio of electron microscopy methods in one data set, conventional plane‐wave illumination TEM being one of them. Here, the principle of reciprocity is employed to produce true structural projections of misoriented ferroelectric domains at atomic resolution. By reciprocal TEM imaging from four‐dimensional STEM
Jean Felix Dushimineza +4 more
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