Results 101 to 110 of about 13,728 (209)
, 2017 My research work falls under the theme of "High Angular Resolution", defined as the study and development of methods and instruments for approaching the limit of diffraction, in spite of dynamic aberrations. They focus on the measurement of the wavefront for adaptive optics and active optics and on the effects of optical propagation in the lower ...
openaire +1 more source
Wavefront curvature sensing and control in microscopy [PDF]
, 2016 The purposes are multiples: creation of a wavefront curvature sensor, use of the curvature sensing to control a multi-actuator lens developed at CNR-IFN of Padua (18 piezoelectric actuators) and use of the multi-actuator lens to generate an astigmatic ...
Dalle Rive, Gianluca
core
Focal plane wavefront control with model-based reinforcement learning
Astronomy & AstrophysicsContext. The direct imaging of potentially habitable exoplanets is one prime science case for high-contrast imaging (HCI) instruments on ground-based, extremely large telescopes.
Nousiainen J. +4 more
doaj +1 more source
Telescope Multi-Field Wavefront Control with a Kalman Filter [PDF]
, 2008 An effective multi-field wavefront control (WFC) approach is demonstrated for an actuated, segmented space telescope using wavefront measurements at the exit pupil, and the optical and computational implications of this approach are discussed.
Lou, John Z. +3 more
core
Optical Beam Control for Jitter and Wavefront Aberrations [PDF]
, 2018 1st International Conference on Optics, Photonics and Lasers (OPAL' 2018) 9-11 May 2018, Barcelona, SpainOptical beams are used in many applications, such as imaging, laser communications, and high energy laser systems.
Kim, J., Agrawal, B.N.
core
WFSuite: a Python software suite for X-ray wavefront sensing and at-wavelength metrology
Journal of Synchrotron RadiationWFSuite is a Python-based software suite for X-ray wavefront sensing and at-wavelength metrology for synchrotron and X-ray free-electron laser applications. It integrates tools for both relative and absolute speckle-based measurements.
Xianbo Shi +4 more
doaj +1 more source
Advanced Wavefront Sensing and Control Testbed (AWCT) [PDF]
, 2010 The Advanced Wavefront Sensing and Control Testbed (AWCT) is built as a versatile facility for developing and demonstrating, in hardware, the future technologies of wave front sensing and control algorithms for active optical systems.
Diaz, Rosemary T. +9 more
core
Wavefront Control Toolbox for James Webb Space Telescope Testbed [PDF]
, 2007 We have developed a Matlab toolbox for wavefront control of optical systems. We have applied this toolbox to the optical models of James Webb Space Telescope (JWST) in general and to the JWST Testbed Telescope (TBT) in particular, implementing both ...
Shiri, Ron +4 more
core
Advanced ScienceSymmetry, a core principle of aesthetics, plays a crucial role in both physics and mathematics. Recent investigations into high‐symmetry meta‐structures (Cm, m ≥ 3) have revealed intriguing concepts and phenomena in optics and materials science. However,
Kai Qu +6 more
doaj +1 more source
Low Order Wavefront Sensing and Control for WFIRST Coronagraph [PDF]
, 2016 To maintain the required WFIRST Coronagraph starlight suppression performance in a realistic space environment, a low order wavefront sensing and control (LOWFS/C) subsystem is necessary.
Lam, Raymond +15 more
core