Results 21 to 30 of about 13,728 (209)

Validating advanced wavefront control techniques on the SCExAO testbed/instrument [PDF]

, 2020
The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) serves both a science instrument in operation, and a prototyping platform for integrating and validating advanced wavefront control techniques.
Norris, B., Groff, T., Sahoo, Ananya, Lozi, Julien, Bos, Steven, Miller, Kelsey L., Lozi, J., Males, Jared R., Sevin, A., Currie, T., Mazin, B.A., Martinod, Marc Antoine, Lopez, Coline, Vievard, S., Snik, Frans, Groff, Tyler, Mazin, Benjamin, Ndiaye, Mamadou, Vievard, Sébastien, Belikov, Ruslan, Lopez, C., Males, J., Kotani, T., Pluzhnyk, Eugene, Ndiaye, M., Kawahara, Hajime, Guyon, O., Sahoo, A., Martinache, F., Skaf, N., Martinod, Marc-Antoine, Deo, V., Bendek, E., Tamura, M., Wong, Alison, Ltaief, H., Martinache, Frantz, Pluzhnyk, E., Sevin, Arnaud, Bendek, Eduardo, Norris, Barnaby, Tamura, Motohide, Bos, Steven P., Fitzgerald, Michael, Currie, Thayne, Miller, K., Jovanovic, Nemanja, Miller, Kelsey, Gratadour, Damien, Kudo, Tomoyuki, Belikov, R., Kotani, Takayuki, Kudo, T., Males, Jared, Groff, Tyler D., Martinod, M.-A., Ltaief, Hatem, Deo, Vincent, Fitzgerald, M., Kawahara, H., Snik, F., Mazin, Benjamin A., Jovanovic, N., Gratadour, D., Skaf, Nour, Bos, S., Wong, A., Guyon, Olivier   +67 more
core   +2 more sources

FPGA-accelerated adaptive optics wavefront control part II [PDF]

, 2022
Paper 93430Y, 13 S.We present progressive work that is based on our recently developed rapid control prototyping system (RCP), designed for the implementation of high-performance adaptive optical control algorithms using a continuous deformable mirror ...
Reger, Johann, Mauch, Steffen, Appelfelder, Michael, Barth, A., Reinlein, Claudia, Beckert, Erik   +5 more
core   +1 more source

Filtered Influence Function of Deformable Mirror for Wavefront Correction in Laser Systems

Photonics, 2021
An influence function filtering method (IFFM) is presented to improve the wavefront correction capability in laser systems by curbing the correction performance degradation resulted from the IF measurement noise.
Yamin Zheng, Ming Lei, Shibing Lin, Deen Wang, Qiao Xue, Lei Huang   +5 more
doaj   +1 more source

Wavefront sensing for objective assessment of vision therapy efficacy: Preliminary results [PDF]

EPJ Web of Conferences, 2023
The aim of this study was to use wavefront sensing to objectively evaluate the effects of vision therapy in subjects with insufficiency (AI) and infacility of accommodation (AINF). Aberrometry was performed with a Shack-Hartmann wavefront aberrometer for
Gomes Jessica, Sapkota Kishor, Franco Sandra   +2 more
doaj   +1 more source

Sparse wavefront control: A new approach to high-contrast imaging [PDF]

, 2018
Current high-contrast imaging systems implement wavefront control using traditional deformable mirrors developed for atmospheric turbulence correction, which require large strokes, high-speed, and continuous phase correction.
Belikov, Ruslan, Sirbu, Dan, Henze, Chris, Milster, Thomas, Finan, Emily, Pluzhnik, Eugene, Bendek, Eduardo A.   +6 more
core   +1 more source

Wavefront control with a multi-actuator adaptive Lens in imaging applications [PDF]

, 2017
The use of adaptive lenses instead of deformable mirrors can simplify the implementation of an adaptive optics system. The recently introduced Multi-actuator Adaptive Lens (MAL) can be used in closed loop with a wavefront sensor to correct for time ...
Verstraete, H.R.G.W., Zawadzki, R.J., Muradore, R., J. Mocci, M. Cua, Lee, S., Wahl, D., Gigan, Sylvain, Mocci, J., Verhaegen, M., Cua, M., Jian, Y., Jian, Y, MOCCI, JACOPO, M. Quintavalla, MURADORE, Riccardo, P. Pozzi, R. J. Zawadzki, C. Trestino, M. V. Sarunic, M. Verhaegen, Bonora, S., Kubby, Joel, Sarunic, M. V., Quintavalla, M., Pozzi, P., Trestino, C., Verstraete, H., D. Wahl, Y. Jian, Zawadzki, R. J., R. Muradore, S. Lee, H. Verstraete, Verhaegen, M.H.G., Sarunic, M.V., Bifano, Thomas G., S. Bonora   +37 more
core   +3 more sources

Coherent Wave Control in Complex Media with Arbitrary Wavefronts [PDF]

Physical Review Letters, 2021
13 pages including 4 figures + 7 pages Supplemental ...
Philipp del Hougne, K. Brahima Yeo, Philippe Besnier, Matthieu Davy   +3 more
openaire   +5 more sources

Control Electromagnetic Waves Based on Multi-Layered Transparent Metasurface

Frontiers in Physics, 2019
Metasurface was presented to be the two-dimensional analogs of metamaterials that regulate the beam by adjusting the phase and amplitude of the wavefront.
Zhichao Sun, Mengyao Yan, Tungamirai Eric Mupona, Bijun Xu   +3 more
doaj   +1 more source

Disturbance Modelling for Minimum Variance Control in Adaptive Optics Systems Using Wavefront Sensor Sampled-Data

Sensors, 2021
Modern large telescopes are built based on the effectiveness of adaptive optics systems in mitigating the detrimental effects of wavefront distortions on astronomical images.
María Coronel, Rodrigo Carvajal, Pedro Escárate, Juan C. Agüero   +3 more
doaj   +1 more source

Deep learning assisted optical wavefront shaping in disordered medium [PDF]

, 2019
Wavefront shaping (WFS) has been put forward several years ago to break the limitation caused by optical scattering in inhomogeneous medium, and realize optical focusing in disordered medium like biological tissues.
Luo, Yunqi, Li, Huanhao, Yuanjin Zheng, Zhang, Ruochong, Ruochong Zhang, Yunqi Luo, Puxiang Lai, Zheng, Yuanjin, Lai, Puxiang, Huanhao Li   +9 more
core   +1 more source