Results 91 to 100 of about 2,392,408 (295)

Bamboo‐Slip‐Inspired Conformal Reconfigurable Metasurfaces

Advanced Science, EarlyView.
Bamboo‐slip‐inspired conformal reconfigurable metasurface system. The structure is mainly composed of three parts, which are conformal metasurface, pattern reconfigurable antenna, and control components (such as Field Programmable Gate Array (FPGA)). Conformal metasurfaces draw inspiration from the design of ancient Chinese bamboo slips.
Qifan Li, Shaofeng Zhang, Qiang Feng, Dexiao Xia, Yajie Mu, Xiangjin Ma, Jiaqi Han, Haixia Liu, Guangyao Liu, Long Li   +9 more
wiley   +1 more source

Automatic wavefront measurement technique using a computer display and a charge-coupled device camera

, 2002
A simple and fully automated technique for wavefront measurement is presented. This technique is based on the use of a computer display (for example, a CRT or a thin film transistor (TFT) monitor) to generate intensity-modulated patterns from which ...
Alonso Fernández, José, Canabal Boutureira, Héctor Alfonso   +1 more
core   +1 more source

Deep‐Learning‐Based Denoising for Improved Phase Precision in Electron Holography of Electromagnetic Fields in Nanoscale Materials

Advanced Science, EarlyView.
Low‐dose electron holography is limited by shot noise, which buries weak phase signals. HoloDenoiser, a physics‐informed network that works simultaneously in the spatial and frequency domains, locates and protects the holographic sideband while suppressing noise in the hologram.
Ye Luo, Luyang Wang, Zhiling Yu, Xiaowen Chen, Xiaoyu Wang, Ya‐Hui Jia, Thibaud Denneulin, Yu Han, Rafal E. Dunin‐Borkowski, Fengshan Zheng, Qi Liu   +10 more
wiley   +1 more source

Deep learning assisted optical wavefront shaping in disordered medium

, 2019
Wavefront shaping (WFS) has been put forward several years ago to break the limitation caused by optical scattering in inhomogeneous medium, and realize optical focusing in disordered medium like biological tissues.
Luo, Yunqi, Li, Huanhao, Yuanjin Zheng, Zhang, Ruochong, Ruochong Zhang, Yunqi Luo, Puxiang Lai, Zheng, Yuanjin, Lai, Puxiang, Huanhao Li   +9 more
core   +1 more source

Dual‐Functional Terahertz Manipulation of EuBa2Cu3O7 Superconductors via Cooper Pair Dynamics

Advanced Science, EarlyView.
We use a spintronic‐metasurface THz emitter to realize chiral THz generation. Using polarization‐tunable THz pulses, we investigate equilibrium and photoinduced THz responses in a 43 nm thick EuBa2Cu3O7 (EBCO) thin film. The EBCO film achieves 46.81 dB EMI shielding and 113% photoinduced THz modulation with 19.0 ps recovery, enabled by Cooper‐pair ...
Zhangshun Li, Meng Yang, Zuanming Jin, Junxue Li, Zhiqiang Lan, Chen Huang, Alexei V. Balakin, Alexander P. Shkurinov, Yan Peng, Yiming Zhu, Songlin Zhuang   +10 more
wiley   +1 more source

A Benchtop Complex Wavefront Manipulator for Evaluating PSF Engineering [PDF]

This research focuses on constructing a wavefront manipulation benchtop system. The primary goal is to replicate a hologram reconstruction method using a two-phase or two-pass modulation system with a spatial light modulator (SLM).
Birch, Megan
core   +1 more source

Fast Programming of in‐Plane Hyperbolic Phonon Polariton Optics through Van der Waals Crystals Using the Phase‐Change Material In3SbTe2

Advanced Science, EarlyView.
Launching structures for in‐plane hyperbolic polaritons in α‐MoO3 are optically programmed through already deposited flakes into the phase‐change material In3SbTe2. Precise alignment with the flake's crystal axes, focusing of polaritons by an optically programmed disk, and a first experimental realization toward a nanocavity for in‐plane hyperbolic ...
Lina Jäckering, Umberto Saldarelli, Aaron Moos, Lukas Conrads, Enrique Terán‐García, Christian Lanza, Aitana Tarazaga Martín‐Luengo, Gonzalo Álvarez‐Pérez, Pablo Alonso‐González, Matthias Wuttig, Thomas Taubner   +10 more
wiley   +1 more source

Measurement and Compensation of Laser Beam Wavefront Distortion in Atmospheric Environment

Guangtongxin yanjiu
ObjectiveFree Space Optical Communication (FSOC) demonstates high confidentiality and reliability. However, atmospheric turbulence can cause beam drift, light intensity fluctuations, and phase jitter, which seriously degrades the communication ...
LI Jing, HUANG Liangbo, ZOU Yansheng, DAI Jiewen, DAI Xiaoxiao, LIU Chen   +5 more
doaj  

Wavefront Prediction for Adaptive Optics Without Wavefront Sensing Based on EfficientNetV2-S

Photonics
Adaptive optics (AO) aims to counteract wavefront distortions caused by atmospheric turbulence and inherent system errors. Aberration recovery accuracy and computational speed play crucial roles in its correction capability. To address the issues of slow
Zhiguang Zhang, Zelu Huang, Jiawei Wu, Zhaojun Yan, Xin Li, Chang Liu, Huizhen Yang   +6 more
doaj   +1 more source

Large-Aperture Real-Time Compensated Collimating Wavefront Error Detection Method

Applied Sciences, 2019
This paper proposes a real-time compensated pentaprism scanning wavefront detection method to achieve real-time compensation for scanning errors occurring during prism movement along a guide rail.
Xueliang Zhu, Dasen Wang, Fengming Nie, Bingcai Liu, Hongjun Wang, Ailing Tian   +5 more
doaj   +1 more source