Results 1 to 10 of about 5,015,013 (196)
Shape Control of a Unimorph Deformable Mirror for Space Active Optics under Uncertainties [PDF]
Micromachines, 2023 This paper focuses on the change of morphing capabilities for a unimorph deformable mirror impacted by environmental factors, which works in space for active optics applications.
Kainan Wang +2 more
exaly +5 more sources
Deep Learning Correction Algorithm for The Active Optics System [PDF]
Sensors, 2020 The correction of wavefront aberration plays a vital role in active optics. The traditional correction algorithms based on the deformation of the mirror cannot effectively deal with disturbances in the real system.
Wenxiang Li, Chao Kang, Xiaojun Zhou
exaly +5 more sources
Point-to-point stabilized optical frequency transfer with active optics [PDF]
Nature Communications, 2021 Atomic clocks and their networks are useful tools for optical communications and frequency metrology. Here the authors use phase stabilization and active tip-tilt to suppress atmospheric effects and enable optical frequency transfer through free-space.
Benjamin P. Dix-Matthews +10 more
doaj +3 more sources
Active Optics in Astronomy: Freeform Mirror for the MESSIER Telescope Proposal [PDF]
Mathematical and Computational Applications, 2018 Active optics techniques in astronomy provide high imaging quality. This paper is dedicated to highly deformable active optics that can generate non-axisymmetric aspheric surfaces—or freeform surfaces—by use of a minimum number of actuators ...
Gerard Rene Lemaitre +2 more
doaj +2 more sources
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018 Experiments using high brightness X-rays are on the forefront of science due to the vast variety of knowledge they can provide. New Synchrotron Radiation (SR) and Free Electron Laser (FEL) light sources provide unique tools for advanced studies using X ...
Daniele Cocco +2 more
exaly +2 more sources
Design for quality: reconfigurable flat optics based on active metasurfaces
Nanophotonics, 2020 Optical metasurfaces, planar subwavelength nanoantenna arrays with the singular ability to sculpt wavefront in almost arbitrary manners, are poised to become a powerful tool enabling compact and high-performance optics with novel functionalities.
Mikhail Y Shalaginov +2 more
exaly +2 more sources
Optical design and active optics methods in astronomy [PDF]
Optical Review, 2013 Optical designs for astronomy involve implementation of active optics and adaptive optics from X-ray to the infrared. Developments and results of active optics methods for telescopes, spectrographs and coronagraph planet finders are presented. The high accuracy and remarkable smoothness of surfaces generated by active optics methods also allow ...
Gérard R Lemaitre
exaly +3 more sources
Analysis of active optics correction for a large honeycomb mirror [PDF]
Optical Engineering + Applications, 2023 In the development of space-based large telescope systems, having the capability to perform active optics correction allows correcting wavefront aberrations caused by thermal perturbations so as to achieve diffraction-limited performance with relaxed ...
Solvay A. Blomquist +7 more
semanticscholar +1 more source
Frontiers in Public Health, 2022 This study aimed at implementing practice to build a standardized protocol to test the performance of computer-aided detection (CAD) algorithms for pulmonary nodules.
Hao Wang +5 more
doaj +1 more source
Metal-Organic Hybrid Metamaterials for Spectral-Band Selective Active Terahertz Modulators
Applied Sciences, 2021 Optically controlled spectral-band selective terahertz (THz) modulators based on metal-organic hybrid metamaterials were investigated. An artificially structured material, which consists of two single split-ring resonators put together on the split gap ...
Hyung Keun Yoo +6 more
doaj +1 more source