Results 41 to 50 of about 13,728 (209)
Wavefront coding with adaptive optics [PDF]
, 2015 We have implemented an extended depth of field optical system by wavefront coding with a micromachined membrane deformable mirror. This approach provides a versatile extension to standard wavefront coding based on fixed phase mask.
Patlan, V. +11 more
core +1 more source
Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane
International Journal of Optics, 2015 The correction capability and the convergence speed of the wavefront-sensorless adaptive optics (AO) system are compared based on two different system control algorithms, which both use the information of focal plane.
Huizhen Yang, Zhen Zhang, Jian Wu
doaj +1 more source
A review of dielectric optical metasurfaces for wavefront control
Nanophotonics, 2018 During the past few years, metasurfaces have been used to demonstrate optical elements and systems with capabilities that surpass those of conventional diffractive optics.
Kamali Seyedeh Mahsa +3 more
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Shaping elastic wavefront through zigzag-folded metasurfaces
Frontiers in Physics, 2023 We present a reconfigurable elastic metasurface design composed of an array of zigzag-folded sheets with parallel corrugations to control the wavefront of the refracted A0 Lamb mode wave.
Zhenkun Lin, Serife Tol
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Optimization of Iterative Control Algorithms for High-Resolution Adaptive Optics Systems
IEEE Photonics JournalAs the number of wavefront sensor subapertures and deformable mirror actuators in adaptive optics systems increases, the computational time of the direct gradient wavefront control algorithm is excessively long, which is a major factor affecting the ...
Shenghu Liu +7 more
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Nanophotonics, 2023 The ultraviolet (UV) wavelength regime is attracting increasing attention because of its growing demand in semiconductor lithography, spectroscopy, and imaging applications owing to its high spatial resolution and high photon energy.
Won Seungjai +5 more
doaj +1 more source
Light-controllable metasurface for microwave wavefront manipulation
Optics Express, 2020 Applying multiple physical fields to artificial manipulate electromagnetic waves is a highly stirring research. In this paper, we creatively combine light control with microwave scattering, realizing an optically coding metasurface for beam deflection based on anomalous reflection.
Lei Chen +5 more
openaire +2 more sources
A mathematical investigation of a clock and wavefront model for somitogenesis [PDF]
, 2006 Somites are transient blocks of cells that form sequentially along the antero-posterior axis of vertebrate embryos. They give rise to the vertebrae, ribs and other associated features of the trunk.
Maini, P. K. +6 more
core +2 more sources
Controlling cantilevered adaptive X-ray mirrors
Journal of Synchrotron RadiationModeling the behavior of a prototype cantilevered X-ray adaptive mirror (held from one end) demonstrates its potential for use on high-performance X-ray beamlines.
Kenneth A. Goldberg, Kyle T. La Fleche
doaj +1 more source
Differential wavefront sensing and control using radio-frequency optical demodulation [PDF]
, 2021 Differential wavefront sensing is an essential technique for optimising the performance of many precision interferometric experiments. Perhaps the most extensive application of this is for alignment sensing using radio-frequency beats measured with ...
Alexei Ciobanu (9240440) +4 more
core +1 more source