HIGH-SPEED IMAGING AND WAVEFRONT SENSING WITH AN INFRARED AVALANCHE PHOTODIODE ARRAY [PDF]
, 2015 Christoph Baranec +6 more
openalex +1 more source
3D Dielectric Chiral Metamaterials Achieving Nondispersive Near‐Zero Ellipticity
Laser &Photonics Reviews, EarlyView.Broadband and high‐transmission‐efficiency optical activity (OA) is a critical functionality for numerous applications but is challenging to achieve. By engineering circularly polarized (CP) eigenstates in three‐dimensional (3D) dielectric helices, a 3D‐printed ceramic metamaterial is demonstrated for broadband OA with nondispersive near‐zero ...
Kang Du +8 more
wiley +1 more source
Wavefront Estimation From a Single Measurement: Uniqueness and Algorithms [PDF]
arXivWavefront estimation is an essential component of adaptive optics where the goal is to recover the underlying phase from its Fourier magnitude. While this may sound identical to classical phase retrieval, wavefront estimation faces more strict requirements regarding uniqueness as adaptive optics systems need a unique phase to compensate for the ...
arxiv
EUV and Hard X-ray Hartmann Wavefront Sensing for Optical Metrology, Alignment and Phase Imaging. [PDF]
Sensors (Basel), 2021 de La Rochefoucauld O +7 more
europepmc +1 more source
Evolution of Ocular Wavefront Sensing
Frontiers in Optics 2014, 2014 Techniques for measuring ocular aberrations have evolved over the past few decades. These techniques and their capabilities and limitations are explored.
openaire +2 more sources
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
Adaptive optical microscopy via virtual-imaging-assisted wavefront sensing for high-resolution tissue imaging [PDF]
, 2022 Zhou Zhou +8 more
openalex +1 more source
Simulated radiation levels and patterns of MRI without a Faraday shielded room
Magnetic Resonance in Medicine, EarlyView.Abstract Purpose We characterize electromagnetic (EM) radiation patterns and levels in conventional MRI systems as a function of field strength and load symmetry, providing a framework for mitigation strategies allowing operation without a shielded room. Methods We simulated the far‐field radiation pattern and fields at a 10 m radius (|E|10m and |B|10m)
Ehsan Kazemivalipour +2 more
wiley +1 more source
Multicolor wavefront sensing using Talbot effect for high-order harmonic generation
Physical Review ResearchHigh-order harmonic generation (HHG) using femtosecond lasers is an efficient and cost-effective method for producing attosecond and femtosecond light in the extreme ultraviolet and soft x-ray regions.
Yang Du +8 more
doaj +1 more source
Single-Shot Phase Diversity Wavefront Sensing in Deep Turbulence via Metasurface Optics [PDF]
arXivFree-space optical communication (FSOC) systems offer high-bandwidth and secure communication with minimal capital costs. Adaptive optics (AO) are typically added to these systems to decrease atmospheric channel losses; however, the performance of traditional AO wavefront sensors degrades in long-range, deep turbulence conditions. Alternative wavefront
arxiv