Results 281 to 290 of about 2,674,389 (338)

Computing Liquid‐Crystal Photonics Platform Enabled Wavefront Sensing

Laser and Photonics Reviews, 2023
Detecting the wavefront of photons in an efficient and accurate way is crucial to retrieve the information of an optical field. Liquid crystal (LC) possesses strong ability to manipulate the phase and polarization of photons with high diffraction ...
Shuoqing Liu, Fan Fan, Shizhen Chen, S. Wen, Hailu Luo   +4 more
semanticscholar   +3 more sources

OAM-Basis Wavefront Single-Pixel Imaging via Compressed Sensing

Journal of Lightwave Technology, 2023
Utilizing a complex-number basis for single-pixel imaging (SPI) a spatial wavefront in high quality is still an open issue. To solve this issue, here, we proposed a method called OAM-basis spatial wavefront single-pixel imaging (WSPI) via compressed ...
Lei Gao, Wenjing Zhao, Aiping Zhai, Dong Wang   +3 more
semanticscholar   +3 more sources

Focal-plane wavefront sensing with photonic lanterns II: numerical characterization and optimization

Journal of the Optical Society of America B, 2023
We present numerical characterizations of the wavefront sensing performance for few-mode photonic lantern wavefront sensors (PLWFSs). These characterizations include calculations of throughput, control space, sensor linearity, and an estimate of maximum ...
Jonathan Lin, Michael P. Fitzgerald, Yinzi Xin, Y. Kim, O. Guyon, Sergio Leon-Saval, B. Norris, N. Jovanovic   +7 more
semanticscholar   +1 more source

Machine learning for wavefront sensing

Astronomical Telescopes + Instrumentation, 2022
Advances in the field of deep learning have motivated a flurry of research into the application of neural networks to wavefront sensing for adaptive optics.
Alison P. Wong, B. Norris, V. Deo, O. Guyon, P. Tuthill, J. Lozi, S. Vievard, K. Ahn   +7 more
semanticscholar   +1 more source

Exascale integrated modeling of low-order wavefront sensing and control for the Roman Coronagraph instrument.

Journal of The Optical Society of America A-optics Image Science and Vision, 2022
Astronomical instruments to detect exoplanets require extreme wavefront stability. For these missions to succeed, comprehensive and precise modeling is required to design and analyze suitable coronagraphs and their wavefront control systems.
Brandon D. Dube, A. Riggs, B. Kern, E. Cady, J. Krist, Hanying Zhou, B. Nemati, Byoung-Joon Seo, John B. Steeves, D. Arndt, M. Mandic, J. Shields, D. Boussalis, Alfredo Valverde, Z. Rahman, N. Fathpour   +15 more
semanticscholar   +1 more source

Final performance of the ESO’s ALICE and LISA wavefront sensing cameras

Astronomical Telescopes + Instrumentation, 2022
The development of the ESO’s ALICE and LISA wavefront sensor cameras is approaching its conclusion. The cameras will serve the ELT and VLT telescopes and their instrumentation for a variety of wavefront sensing applications: they are built around a ...
E. Marchetti, P. Amico, Martin Brinkmann, R. Conzelmann, D. del Valle, N. di Lieto, Max Engelhardt, Christoph Geimer, J. Hopgood, I. Molina, E. Mueller, J. Quentin, J. Reyes, Mathias Richerzhagen, M. Seidel, J. Stegmeier, M. Todorović   +16 more
semanticscholar   +1 more source

Aliasing effect of rolling shutter readout in laser guide star wavefront sensing

Astronomical Telescopes + Instrumentation, 2022
It is common practice in adaptive optics to use CCD detectors with global shutter readout for wavefront sensing. sCMOS detectors with rolling shutter readout are often not considered due to image distortion when the object is moving at high speed ...
Hajime Ogane, M. Akiyama, Jesse Cranney, F. Rigaut, N. Martinez Rey, C. d’Orgeville, Y. Minowa, Y. Ono   +7 more
semanticscholar   +1 more source

Holography-based wavefront sensing

Applied Optics, 2007
We describe a modal wavefront sensing technique of using multiplexed holographic optical elements (HOEs). The phase pattern of a set of aberrations is angle multiplexed in a HOE, and the correlated information is obtained with a position sensing detector.
F, Ghebremichael, Geoff P, Andersen, Kenneth S, Gurley   +2 more
openaire   +2 more sources

Making sense out of wavefront sensing

American Journal of Ophthalmology, 2005
a T p HE PRESENCE OF OPTICAL ABERRATIONS THAT BLUR retinal images were the subject of popular lectures by Helmholtz in the 1860s, and led him to state: Now, it is not too much to say that if an optician wanted o sell me an instrument which had all these defects, I hould think myself justified in blaming his carelessness in he strongest terms and giving
Jay S, Pepose, Raymond A, Applegate
openaire   +2 more sources