Results 141 to 150 of about 80,548 (342)
Discrete Chiral Ballistic Polariton Laser
Laser &Photonics Reviews, EarlyView.Planar microcavities in the strong light–matter coupling regime exhibit exciton‐polariton modes with a strong chiral response toward circularly polarized light. This feature is exploited alongside inherent spin‐orbit coupling of cavity light to generate giant discrete optical vortices in polygonal arrays of exciton‐polariton condensates.
Zuzanna Werner +5 more
wiley +1 more source
Orbital Angular Momentum Holography Using Neural Network and Camera in the Loop
Laser &Photonics Reviews, EarlyView.Neural network and optimization‐based approaches are introduced for Orbital Angular Momentum (OAM) multiplexed holography, enabling high‐capacity, phase‐only image reconstruction. A Camera‐In‐The‐Loop (CITL) system learns a realistic propagation model to correct system imperfections.
Nima Asoudegi, Mo Mojahedi
wiley +1 more source
Breaking Boundaries: A Universal Wavefront Reconstruction Approach for High-resolution Solar Imaging
The Astrophysical Journal LettersThis Letter proposes a universal wavefront reconstruction approach based on a coupled data set and neural network, aiming to overcome the limitations of current algorithms in terms of universality and wavefront sensing accuracy for variable imaging ...
Xinlan Ge +6 more
doaj +1 more source
Single-Shot Wavefront Sensing in Focal Plane Imaging Using Transformer Networks
OpticsWavefront sensing is an essential technique in optical imaging, adaptive optics, and atmospheric turbulence correction. Traditional wavefront reconstruction methods, including the Gerchberg–Saxton (GS) algorithm and phase diversity (PD) techniques, are ...
Hangning Kou +6 more
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Laser &Photonics Reviews, EarlyView.This study leverages STM technology to enhance NFF performance by enabling continuous phase control at the +1st harmonic without increasing hardware complexity. It overcomes the limitations of conventional 1‐bit TMs caused by phase quantization errors and demonstrates that even compact arrays can achieve effective focusing, highlighting the strong ...
Manting Wang +7 more
wiley +1 more source
A Dual‐Programmable Metasurface with Duplex Beam Steering for Full‐Space Terahertz Communications
Laser &Photonics Reviews, EarlyView.A dual‐programmable terahertz metasurface enables independent control of transmission and reflection beam steering. It breaks through the limitations in resonant tunability by polarization allocation with 2D‐electron‐gas tuning, enabling a single resonator to incorporate bidirectional operating modes.
Luyang Wang +15 more
wiley +1 more source
Light: Science & ApplicationsShack–Hartmann wavefront sensors measure the local slopes of an incoming wavefront based on the displacement of focal spots created by a lenslet array, serving as key components for adaptive optics for astronomical and biomedical imaging.
Gi-Hyun Go +5 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.This study introduces a humidity‐responsive optical imaging technique capable of dynamically switching between edge detection and bright‐field imaging modes. Utilizing humidity‐induced modulation of refractive index and polarization‐dependent beam shaping, tunable optical imaging is achieved through controlled beam splitting governed by the spin Hall ...
Yeseul Kim +10 more
wiley +1 more source
Estimating the point spread function of the adaptive optics system ADONIS using the wavefront sensor measurements [PDF]
, 2000 Stephan Harder, A. Chelli
openalex +1 more source