Results 141 to 150 of about 96,711 (321)

Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing [PDF]

open access: yesarXiv
Over the past fifty years, wavefront sensing technology has continuously evolved from basic techniques to high-precision systems, serving as a core methodology in adaptive optics (AO). Beyond traditional wavefront retrieval methods based on spot displacement, direct phase retrieval techniques with greater accuracy have emerged, jointly driving ...
arxiv  

Wavefront sensing using a multi-object spectrograph (NIRSpec) [PDF]

open access: green, 2004
Bruce H. Dean   +3 more
openalex   +1 more source

Development of a scalable generic platform for adaptive optics real time control

open access: yes, 2015
The main objective of the present project is to explore the viability of an adaptive optics control system based exclusively on Field Programmable Gate Arrays (FPGAs), making strong use of their parallel processing capability.
Burse, Mahesh P.   +3 more
core   +1 more source

Wavefront sensing in the human eye

open access: yes, 2002
Fortschritte in der chirurgischen Technik zur Korrektur von refraktionsbedingten Sehfehlern haben es ermoglicht, dass heute die Form der Hornhautvorderflache auch ortsaufgelost geandert werden kann. Die Refraktionsmessungen am menschlichen Auge beschrankten sich allerdings auf die Messung von Sphare und Astigmatismus, und zwar bei einer einzigen ...
openaire   +2 more sources

Wavefront sensing with a gradient phase filter

open access: yesOptics Communications
20 pages, 8 ...
François Hénault   +4 more
openaire   +3 more sources

Maximized Enhancement of Polarized and Unpolarized Emissions via Critical Coupling in Brillouin Zone Folding Metasurfaces

open access: yesLaser &Photonics Reviews, EarlyView.
Maximized emission enhancement is experimentally achieved using critical coupling in Brillouin zone folding metasurfaces. Maximized enhancements of polarized and unpolarized emissions from quantum dot‐coated dielectric metasurfaces are demonstrated in the normal direction.
Jungho Han   +4 more
wiley   +1 more source

Real-Time Wavefront Sensing at High Resolution with an Electrically Tunable Lens. [PDF]

open access: yesSensors (Basel), 2023
Oliva-García R   +4 more
europepmc   +1 more source

Wavefront error sensing for LDR [PDF]

open access: yes
Wavefront sensing is a significant aspect of the LDR control problem and requires attention at an early stage of the control system definition and design.
Glavich, T. A., Tubbs, Eldred F.
core   +1 more source

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