Results 71 to 80 of about 25,876 (202)

Hybrid holographic non-destructive test system [PDF]

, 1978
An automatic hybrid holographic non-destructive testing (HNDT) method and system capable of detecting flaws or debonds contained within certain materials are described.
Kurtz, R. L.
core   +1 more source

Metasurfaces and Metadevices for Topological Electromagnetic Waves

Advanced Physics Research, EarlyView.
Optical topologies refer to diverse topological localized structures made by diverse parameters of light fields, such as vortices, skyrmions, and hopfions. This article navigates a direction of metasurface‐based integrated devices for generation, manipulation and detection of novel topologies of light, which would be a rapidly growing interdisciplinary
Rensheng Xie, Nilo Mata‐Cervera, Xi Xie, Yijie Shen   +3 more
wiley   +1 more source

Precise 3D Tracking of Highly Non‐Planar Eukaryotic Flagellar Beating Patterns Using Digital Holographic Microscopy

Small Methods, EarlyView.
The 3D beating dynamics of eukaryotic flagella drive motility, sensory functions, and resource acquisition, yet highly non‐planar beating patterns remain poorly characterized. Based on Digital Holographic Microscopy, holoV3C enables label‐free 3D reconstruction of such complex dynamics with 53 nm axial resolution, demonstrated on mouse sperm and ...
Patryk Nienaltowski, Jonasz Słomka, Federica Miano, Thomas Kiørboe, Clara Martínez‐Pérez, Tristan Colomb, Yves Emery, Roman Stocker   +7 more
wiley   +1 more source

Terahertz Metasurface for Spatial Detection of Full Stokes Parameters and Polarization Imaging

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
This work presents a THz polarization analyzer with significantly improved robustness against nonuniformity. By integrating four polarization‐sensitive meta‐atoms into a meta‐cell, the metalens splits incident light into six polarization components and generates off‐axis focal spots.
Shengnan Guan, Jierong Cheng, Haifeng Xu, Fan Li, Chenglong Liu, Shengjiang Chang   +5 more
wiley   +1 more source

A Recording Structure for Extending the Detection Angle in Off-Axis Digital Holography

IEEE Photonics Journal
In digital holography, the sampling of the object wavefront is determined by the spatial resolution of the image sensors, which limits the angle range of the object wavefront.
Yuanyuan Liu, Feiyan Hu, Qingwen Liu
doaj   +1 more source

Multiwavelength Digital Holography for Metrology: Low-Coherent Noise Sensor Configuration and Its Application [PDF]

EPJ Web of Conferences
The demand for 100% inspection is increasing due to rising quality requirements in manufacturing. Multiwavelength Digital Holography (MDH) has emerged as a promising sensing technology capable of achieving both high throughput and high resolution ...
Matsuura Shimpei, Mukundakumar Balasubrahmaniyam, Suzuki Raiitsu, Barczyk René   +3 more
doaj   +1 more source

Terahertz Encryption With a Polarization‐Sensitive Metasurface

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
We propose a dual‐functional terahertz encryption metasurface that enables independent information retrieval in both the near field and the far field within a single device. In the near field, polarization‐selective amplitude modulation reveals textual patterns, whereas in the far field, phase engineering encodes multiple digital data in focal‐spot ...
Yixuan He, Huan Zhao, Tong Nan, Xinke Wang, Yan Zhang   +4 more
wiley   +1 more source

Phase and absorbance retrieval in X‐ray holographic microscopy under weak illumination using physics‐driven neural networks

Journal of Synchrotron Radiation, Volume 33, Issue 3, Page 794-805, May 2026.
A physics‐driven deep learning model enables single‐shot retrieval of 3D phase and absorbance from shot‐noise‐limited hard X‐ray holograms. Validated on both synthetic and experimental data, it provides robust reconstruction under weak illumination.X‐ray holographic microscopy is a three‐dimensional (3D) imaging technique for nanoscale‐resolution ...
Jihwan Kim, Jun Lim, Sugeun Jo, Sungho Park, Sang Joon Lee   +4 more
wiley   +1 more source

High-fidelity full-color self-interference incoherent digital holography via quarter-wave geometric phase optics

Opto-Electronic Advances
We present a compact self-interference incoherent digital holography (SIDH) system that incorporates a quarter-waveplate (QWP)-based geometric phase (GP) lens to achieve high-fidelity, full-color holographic imaging under broadband incoherent ...
Jae-Won Lee, Jin-Hyeok Seo, Jung-Yeop Shin, Jing-Wen Bu, Kihong Choi, Keehoon Hong, Hak-Rin Kim   +6 more
doaj   +1 more source

Application of Infrared Digital Holography for Characterization of Inhomogeneities and Voluminous Defects of Single Crystals on the Example of ZnGeP₂

Applied Sciences, 2020
In this work, the method of IR digital holography intended for detection of volumetric defects in ZnGeP2 single crystals has been tested. The holographic method is verified by a comparison of the results obtained with the data obtained by other methods ...
Victor Dyomin, Alexander Gribenyukov, Sergey Podzyvalov, Nikolay Yudin, Mikhail Zinoviev, Igor Polovtsev, Alexandra Davydova, Alexey Olshukov   +7 more
doaj   +1 more source