Results 121 to 130 of about 44,477 (288)

Recent Advances in Dielectric Chiral Metasurfaces

Advanced Physics Research, EarlyView.
This review article mainly focuses on the recent advances in dielectric chiral metasurfaces, which exhibit remarkable optical chirality. Many new physical conceptions will be introduced during the fast development of the dielectric chiral metasurfaces, such as chiral quasi‐BIC, chiral guided modes, and nonlocal metasurfaces.
Zhipeng Hu, Yuwei Sun, Hongguang Dong, Houxin Fan, Kaige Ding, Yi Jin, Sailing He   +6 more
wiley   +1 more source

A Holography-Based Modal Wavefront Sensor for the Precise Positioning of a Light Emitter Using a High-Resolution Computer-Generated Hologram

IEEE Photonics Journal, 2018
In certain applications, modal wavefront sensors (MWFSs) can outperform zonal wavefront sensors, which are widely used due to their high flexibility.
Florian Loosen, Johannes Stehr, Lucas Alber, Irina Harder, Norbert Lindlein   +4 more
doaj   +1 more source

Bioimaging of sense organs and the central nervous system in extant fishes and reptiles in situ: A review

The Anatomical Record, EarlyView.
Bioimaging of the sense organs and brain of fishes and reptiles. Left panel: 3D reconstruction of the head and brain of the deep‐sea viperfish Chauliodus sloani following diceCT. Right panel: A 3D reconstruction of a 70‐day‐old embryo head of the bearded dragon Pogona vitticeps following diceCT, showing the position of the segmented brain within the ...
Shaun P. Collin, Kara E. Yopak, Jenna M. Crowe‐Riddell, Victoria Camilieri‐Asch, Caroline C. Kerr, Hope Robins, Myoung Hoon Ha, Annalise Ceddia, Travis L. Dutka, Lucille Chapuis   +9 more
wiley   +1 more source

Retinal adaptive optics imaging with a pyramid wavefront sensor. [PDF]

Biomed Opt Express, 2021
Brunner E, Shatokhina J, Shirazi MF, Drexler W, Leitgeb R, Pollreisz A, Hitzenberger CK, Ramlau R, Pircher M.   +8 more
europepmc   +1 more source

Nanosecond Hyperquenching for Electron Cryo‐Microscopy Without Air‐Water Interface Artifacts

Chemistry – A European Journal, EarlyView.
A novel method for the ultrafast vitrification of the biological assemblies is assayed by the electron cryotomography. Protein specimens prepared by this method inherently lack the spatial/structural artifacts, which derive from the surface tension at the air‐water interface (AWI).
Utz H. Ermel, Harald Schwalbe, Alexey V. Cherepanov   +2 more
wiley   +1 more source

Into nonlinearity and beyond for Zernike-like wavefront sensors [PDF]

Context: Telescopes like the Extremely Large Telescope (ELT) and the Giant Magellan Telescope (GMT) will be used together with extreme adaptive optics (AO) instruments to directly image Earth-like planets. The AO systems will need to perform at the fundamental limit in order to image Earth twins.
arxiv   +1 more source

Shack-Hartmann wavefront sensor optical dynamic range. [PDF]

Opt Express, 2021
Akondi V, Dubra A.
europepmc   +1 more source

Survey of Optical Environment over Hemisphere-on-Cylinder Turret Using Suite of Wavefront Sensors [PDF]

, 2006
Stanislav Gordeyev, Martiqua Post, Thomas McLaughlin, Juan M. Ceniceros, Eric Jumper   +4 more
openalex   +1 more source

On Phase Unwrapping via Digital Wavefront Sensors [PDF]

arXiv
In this paper, we derive a new class of methods for the classic 2D phase unwrapping problem of recovering a phase function from its wrapped form. For this, we consider the wrapped phase as a wavefront aberration in an optical system, and use reconstruction methods for (digital) wavefront sensors for its recovery.
arxiv  

Wavefront sensor-less adaptive optics using deep reinforcement learning. [PDF]

Biomed Opt Express, 2021
Durech E, Newberry W, Franke J, Sarunic MV.   +3 more
europepmc   +1 more source