Results 11 to 20 of about 38,857 (309)
Dynamic Wavefront Manipulation Enabled with VO2-Based Reflective Terahertz Metasurfaces [PDF]
NanomaterialsDynamic wavefront control plays a crucial role in advancing terahertz (THz) high-precision non-destructive testing, wireless communication and high-resolution imaging.
Ruifan Huang +8 more
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Experimental Verification of Model-Based Wavefront Sensorless Adaptive Optics System for Large Aberrations [PDF]
MicromachinesTo address the limitations of conventional wavefront sensorless adaptive optics (AO) systems regarding iteration efficiency and convergence speed, this study conducts an experimental validation of a model-based wavefront sensorless AO approach.
Huizhen Yang +4 more
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Wavefront-Guided and Wavefront-Optimised Laser Treatments
Türk Oftalmoloji Dergisi, 2012 Optical aberrations of the eye are the errors of the optical system that limit the resolution, contrast and amount of detail in the image formed on the retina. Wavefront technology allows us to measure these optical aberrations, calculate mathematically, and transfer this information into excimer laser system to perform customized treatment on the ...
Canan Aslı Utine, YILDIRIM, CANAN ASLI
openaire +3 more sources
On the Ray-Wavefront Duality [PDF]
Symmetry, 2022 We investigate the behavior of the solutions of the ray equation in isotropic media. We discuss local and global transversals and wavefronts and give examples of rays without wavefronts.
Antonio Díaz-Cano +2 more
openaire +4 more sources
On Machine Learning Approaches for Automated Log Management [PDF]
Journal of Universal Computer Science, 2019 We address several problems in intelligent log management of distributed cloud computing applications and their machine learning solutions. Those problems concern various tasks on characterizing data center states from logs, as well as from related or ...
Ashot Harutyunyan +4 more
doaj +3 more sources
One-Dimensional High-Resolution Wavefront Sensor Enabled by Subwavelength Compound Gratings
Photonics, 2023 Angle sensors are widely used for wavefront measurements, which is attributed to their integration and robustness. Currently, commercial sensors are available with pixel sizes in the order of wavelengths.
Yunlong Meng +6 more
doaj +1 more source
Communication with face masks during the COVID-19 pandemic for adults with hearing loss
Cognitive Research, 2022 Face masks have become common protective measures in community and workplace environments to help reduce the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Face masks can make it difficult to hear and understand speech,
Brenda T. Poon, Lorienne M. Jenstad
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Binary Amplitude Reflection Gratings for X-ray Shearing and Hartmann Wavefront Sensors
Sensors, 2021 New, high-coherent-flux X-ray beamlines at synchrotron and free-electron laser light sources rely on wavefront sensors to achieve and maintain optimal alignment under dynamic operating conditions. This includes feedback to adaptive X-ray optics.
Kenneth A. Goldberg +2 more
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Method for arbitrary phase transformation by a slab based on transformation optics and the principle of equal optical path [PDF]
Journal of the European Optical Society-Rapid Publications, 2012 The optical path lengths travelled by rays across a wavefront essentially determine the resulting phase front irrespective of the shape of a medium according to the principle of equal optical path.
Ke Y., Shu W., Luo H., Wen S., Fan D.
doaj +1 more source
Компьютерная оптика, 2021 In the geometrical optics approximation, we consider a method for calculating a refractive optical element with two freeform surfaces, which transforms an incident beam with a plane wave-front into an output beam with a required wavefront and generating ...
L.L. Doskolovich +3 more
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