Results 51 to 60 of about 919,980 (236)
Basis‐Independent Geometric Phase Modulation in Circularly Birefringent Plasmonic Structures
Advanced Optical Materials, EarlyView.Here we introduce a plasmonic metasurface composed of spatially rotated chiral spiral unit cells designed to produce space‐variant circular retardance. This generates a geometric phase ramp equivalent to a blazed grating, leading to polarization dependent diffraction orders in momentum space.
Pasha Goz +3 more
wiley +1 more source
Analysis of Holographic Wavefront Sensing Performance for Extended Sources [PDF]
, 2018 We present a sensitivity analysis of holographic wavefront sensing to extended sources due to spot elongation. Overall, the holographic wavefront sensor (HWFS) tolerates spot elongations at the expense of less sensitivity of the main Zernike mode and the
LACERENZA, MICHELE +3 more
core +1 more source
Electrochemistry‐Enabled Optical and Plasmonic Programmable Metasurfaces
Advanced Optical Materials, EarlyView.Electrochemistry is emerging as a promising approach for engineering optical and plasmonic metasurfaces, from the fabrication of nanoscale structures to their dynamic control. This Perspective reviews electrochemical strategies for creating and tuning metasurfaces, examines current challenges and opportunities, and discusses how integration with ...
Charlène Brissaud, Leonardo Scarabelli
wiley +1 more source
TacScope: A Miniaturized Vision‐Based Tactile Sensor for Surgical Applications
Advanced Robotics Research, EarlyView.TacScope is a compact, vision‐based tactile sensor designed for robot‐assisted surgery. By leveraging a curved elastomer surface with pressure‐sensitive particle redistribution, it captures high‐resolution 3D tactile feedback. TacScope enables accurate tumor detection and shape classification beneath soft tissue phantoms, offering a scalable, low‐cost ...
Md Rakibul Islam Prince +3 more
wiley +1 more source
Characterization of the digital holographic wavefront sensor
, 2014 Paper 92421T, 14 S.Correction of atmospheric effects on the propagation of laser light can be achieved with adaptive optics (AO) by relying on adequate wavefront sensors. For free-space laser communications and for tracking of high-speed airborne objects,
Gladysz, Szymon +8 more
core +1 more source
Advanced Science, EarlyView.Vision begins not with images but with change: the retina fires only when something moves, handing the brain a stream of spikes. A neuromorphic imaging system adopts the same strategy—an event sensor that sees like the retina, a spiking network that thinks like the brain—to track and reconstruct fully randomly moving targets through tissue (phantom ...
Ning Zhang, Arto Nurmikko
wiley +1 more source
Investigation on compressed wavefront sensing in freeform surface measurements
, 2016 In this paper, conventional modal wavefront reconstruction is compared with compressed wavefront sensing to reconstruct freeform surface profiles using the Shack-Hartmann wavefront sensor.
Xin, Wang +4 more
core +1 more source
Improved Phase Diversity Wavefront Sensing with a Deep Learning-Driven Hybrid Optimization Approach
PhotonicsPhase diversity wavefront sensing (PDWS) is a model-based wavefront estimation technique that avoids additional optical components, making it suitable for resource-constrained environments.
Yangchen Wang, Ming Wen, Hongcai Ma
doaj +1 more source
Accounting for Polychromatic Light in Virtual Shack-Hartmann Wavefront Sensing
Photonic Sensors, 2023 Virtual Shack-Hartmann wavefront sensing (vSHWS) has some significant advantages and is promising for aberration measurement in the field of biomedical optical imaging.
Xian Yue +5 more
doaj +1 more source
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 +10 more
wiley +1 more source