Results 91 to 100 of about 562,479 (274)

Transmission matrix of a multimode fiber: In-line vs off-axis holography.

PLoS ONE
Multimode fibers (MMFs) hold great promise for a variety of imaging applications. However, controlling the complex propagation of light through thousands of modes in MMFs remains a challenging task.
Aleksandra Ivanina, Benjamin Lochocki, Andreas Koglbauer, Sergei Sokolov, Sebastianus A Goorden, Lyubov V Amitonova   +5 more
doaj   +1 more source

Learned Integrated Sensing Pipeline: Reconfigurable Metasurface Transceivers as Trainable Physical Layer in an Artificial Neural Network

Advanced Science, 2020
The rapid proliferation of intelligent systems (e.g., fully autonomous vehicles) in today's society relies on sensors with low latency and computational effort.
Philipp delHougne, Mohammadreza F. Imani, Aaron V. Diebold, Roarke Horstmeyer, David R. Smith   +4 more
doaj   +1 more source

Wavefront-sensing with a thin diffuser

, 2017
We propose and implement a broadband, compact, and low-cost wavefront sensing scheme by simply placing a thin diffuser in the close vicinity of a camera. The local wavefront gradient is determined from the local translation of the speckle pattern.
Pascal Berto (1919980), Hervé Rigneault (2482108), Marc Guillon (4180657)   +2 more
core   +1 more source

On the acceleration of wavefront applications using distributed many-core architectures [PDF]

, 2011
In this paper we investigate the use of distributed graphics processing unit (GPU)-based architectures to accelerate pipelined wavefront applications—a ubiquitous class of parallel algorithms used for the solution of a number of scientific and ...
Jarvis, S. A.; id_orcid, Pennycook, Simon J., S. J. Pennycook, Mudalige, Gihan R., G. R. Mudalige, Jarvis, Stephen A., S. D. Hammond, Wright, Steven A., Pennycook, S. J., Jarvis, S. A., Hammond, Simon D., S. A. Wright, Hammond, S. D., S. A. Jarvis, Mudalige, G. R., Wright, S. A.   +15 more
core   +1 more source

Metasurface‐Enabled Helical Wavefront Fingerprint Metrology for Quantitative Retrieval of Liquid Optical Constants

Advanced Science, EarlyView.
A metasurface‐enabled helical wavefront fingerprint (MHWF) paradigm is proposed for quantitative and specific retrieval of a liquid medium's refractive index and extinction coefficient. The liquid's complex dielectric response governs the wavefront evolution of the metasurface‐generated focused vortex beam, forming a distinctive three‐dimensional ...
Yuting Zhou, Hongliang Li, Simeng Li, Feiyu Jiao, Yansong Du, Jin Tae Kim, Sang‐Shin Lee, Duk‐Yong Choi, Fei Ding, Xuechao Yu, Xun Guan   +10 more
wiley   +1 more source

Efficient nonlinear beam shaping in three-dimensional lithium niobate nonlinear photonic crystals

Nature Communications, 2019
Generation of light with desirable amplitude and phase profiles with nonlinear wavefront shaping is of great interest for optical technologies. Here, the authors demonstrate efficient nonlinear beam shaping using three-dimensional lithium niobate ...
Dunzhao Wei, Chaowei Wang, Xiaoyi Xu, Huijun Wang, Yanlei Hu, Pengcheng Chen, Jiawen Li, Yunzhi Zhu, Chen Xin, Xiaopeng Hu, Yong Zhang, Dong Wu, Jiaru Chu, Shining Zhu, Min Xiao   +14 more
doaj   +1 more source

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

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

Twin‐Lever Multifunctional Meta‐Optics With High Longitudinal Tolerance

Advanced Science, EarlyView.
We introduce a single‐layer, CMOS‐compatible metasurface that allows for polarization‐programmable, achromatic broadband dual‐mode imaging with high longitudinal tolerance. The twin‐lever design combines bright‐field focusing and vortex‐based edge‐enhanced imaging while managing axial intensity distribution from 488 to 633 nm.
Isma Javed, Kyungtae Kim, Aqib Raza Shah, Dohyun Kang, Joohoon Kim, Azhar Javed Satti, Xuefeng Liu, Muhammad Zubair, Jichuan Xiong, Muhammad Qasim Mehmood, Junsuk Rho   +10 more
wiley   +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