Results 241 to 250 of about 9,355,325 (300)

Multichannel wavefront manipulation via wavelength-polarization multiplexed terahertz metadevice. [PDF]

iScience
Yue Z, Li J, Zheng C, Zhang Q, Chen M, Zhang Y, Dai Z, Song X, Zhang J, Xu Z, Ye Y, Yao J.   +11 more
europepmc   +1 more source

Dynamic Generation of Spatially Variable Vector Beams Using Cascaded Moiré Metasurfaces

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
A three‐layer cascaded moiré metasurface dynamically generates vector beams with tunable polarization order and controllable lateral focal positions. Relative rotation of the first two layers adjusts the conjugate OAM components that form the vector beam, whereas the third layer steers its focus across the transverse plane, preserving the dominant OAM ...
Siyu Guo, Zhongzhu Liang, Zhe Wu, Xintong Wei, Shijia Zhu, Junying Liu, Siyu Liu, Qiaohan Liu, Xiaoyan Shi, Fuming Yang, Haiyang Xu   +10 more
wiley   +1 more source

Simultaneous Measurement of Peripheral Ocular Aberrations Using a Virtual Multi-Eccentric Hartmann-Shack Aberrometer. [PDF]

Sensors (Basel)
Morales-Marín J, Osorno-Quiroz A, Torres-Sepúlveda W, Mira-Agudelo A.   +3 more
europepmc   +1 more source

A Compact Dual-Oblique-Fiber Heterodyne Phase-Shifting Point Diffraction Interferometer. [PDF]

Sensors (Basel)
Wang Y, Zhu C, Zhang W.
europepmc   +1 more source

In Vitro Repeatability and Inter-Device Agreement of Higher-Order Aberration Measurements in Scleral Lenses Using Two Hartmann-Shack Metrology Devices. [PDF]

Sensors (Basel)
Viviano F, Iovino M, Macedo-de-Araújo RJ, González-Meijome JM.   +3 more
europepmc   +1 more source

Dynamic Wavefront Manipulation Enabled with VO₂-Based Reflective Terahertz Metasurfaces. [PDF]

Nanomaterials (Basel)
Huang R, Shi S, Sun M, Yang R, Lin Y, Wu M, Zhang M, Maksimenko S, He X.   +8 more
europepmc   +1 more source

Bridging the gap in flat optics: the dawn of partially nonlocal metasurfaces. [PDF]

Light Sci Appl
Wei J, Liu Y.
europepmc   +1 more source

Algorithm design for image-based wavefront control without wavefront sensing [PDF]

Optical Instrument Science, Technology, and Applications, 2018
Active optics is an enabling technology for future large space telescopes. Image-based wavefront control uses an image-sharpness metric to evaluate the optical performance. A control algorithm iteratively adapts a corrective element to maximize this metric, without reconstructing the wavefront.
Ulrich Wittrock, Sven Verpoort, Orestis Kazasidis   +2 more
openaire   +2 more sources

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Active wavefront sensing and wavefront control with SLMs

SPIE Proceedings, 2004
Active systems are becoming more and more prevalent in the the field of optical technology. These systems require not only means of controlling wavefronts but mostly also of sensing wavefronts. This paper shows in four examples how spatial light modulators can be utilized to perform active wavefront sensing and wavefront controlling tasks. The examples
Jan Liesener, Lars Seifert, Hans J. Tiziani, Wolfgang Osten   +3 more
openaire   +1 more source