Results 21 to 30 of about 33,132 (307)

Experimental Demonstration of Central-Lobe Energy Enhancement Based on Amplitude Modulation of Beamlets in 19 Elements Fiber Laser Phased Array

IEEE Photonics Journal, 2021
Coherent beam combination of fiber laser phased array is a promising technique to achieve high-brightness laser output. In this paper, we focus on central-lobe energy enhancement of the combined beam in the far-field by theoretically and experimentally ...
Jing Zuo, Feng Li, Chao Geng, Fan Zou, Jiali Jiang, Jiaying Liu, Xu Yang, Tao Yu, Guan Huang, Zhihua Fan, Bincheng Li, Xinyang Li   +11 more
doaj   +1 more source

An Image-Based Alignment Errors Correction Method for Segmented Fresnel Primary Mirror

IEEE Photonics Journal, 2020
The alignment errors correction of segmented Fresnel primary mirror in multiple imaging scenes is simulated. Based on the linear relationship between five kinds of alignment errors and modulation transfer function metric or image frequency domain metric,
Licheng Zhu, Ping Yang, Lianghua Wen, Lujia Zhao, Chunlin Guan, Bing Xu   +5 more
doaj   +1 more source

Integrated modeling of the GMT laser tomography adaptive optics system [PDF]

, 2014
Laser Tomography Adaptive Optics (LTAO) is one of adaptive optics systems planned for the Giant Magellan Telescope (GMT). End-to-end simulation tools that are able to cope with the complexity and computational burden of the AO systems to be installed on ...
Piatrou, Piotr, Piotr Piatrou
core   +1 more source

Object-oriented Matlab adaptive optics toolbox [PDF]

, 2014
Object-Oriented Matlab Adaptive Optics (OOMAO) is a Matlab toolbox dedicated to Adaptive Optics (AO) systems. OOMAO is based on a small set of classes representing the source, atmosphere, telescope, wavefront sensor, Deformable Mirror (DM) and an imager ...
Correia, C, Conan, Rodolphe, R. Conan, C. Correia   +3 more
core   +1 more source

Shack–Hartmann Wavefront Sensing Based on Four-Quadrant Binary Phase Modulation

Photonics, 2022
Aiming at the problem that it is difficult for the conventional Shack–Hartmann wavefront sensor to achieve high-precision wavefront reconstruction with low spatial sampling, a kind of Shack–Hartmann wavefront sensing technology based on four-quadrant ...
Mengmeng Zhao, Wang Zhao, Kangjian Yang, Shuai Wang, Ping Yang, Fengjiao Zeng, Lingxi Kong, Chao Yang   +7 more
doaj   +1 more source

The Giant Magellan Telescope adaptive optics program [PDF]

, 2016
The Giant Magellan Telescope adaptive optics system will be an integral part of the telescope, providing laser guide star generation, wavefront sensing, and wavefront correction to most of the currently envisioned instruments.
Arcidiacono, Carmelo, Carbonaro, Luca, Conan, Rodolphe, d'Orgeville, Celine, Brusa-Zappellini, Guido, Bouchez, A, Bonaglia, Marco, Bennet, Francis, Uhlendorf, Kristina, Acton, D. Scott, Biliotti, Valdemaro, Agapito, Guido, Briguglio, Runa, Parcell, Simon, Busoni, Lorenzo, Piatrou, Piotr, Espeland, Brady, Gardhouse, William, Price, Ian   +18 more
core   +1 more source

Design and Experimental Validation of a Model-Free Controller for Beam Stabilization in Adaptive Optics Systems

IEEE Photonics Journal
Stabilization of optical beams has always been a key factor affecting the performance of many optical systems. The Adaptive optics (AO) beam stabilization system requires further development to cope with increasingly complex application scenarios and ...
Sicheng Guo, Tao Cheng, Kangjian Yang, Lingxi Kong, Chunxuan Su, Shuai Wang, Ping Yang   +6 more
doaj   +1 more source

Adaptive Optics Tip-Tilt Correction Based on Smith Predictor and Filter-Optimized Linear Active Disturbance Rejection Control Method

Sensors, 2023
A tip-tilt mirror (TTM) control method is designed to enhance the control bandwidth and ensure the rejection performance of the adaptive optics (AO) tip-tilt correction system.
Lingxi Kong, Kangjian Yang, Chunxuan Su, Sicheng Guo, Shuai Wang, Tao Cheng, Ping Yang   +6 more
doaj   +1 more source

Optimization of Iterative Control Algorithms for High-Resolution Adaptive Optics Systems

IEEE Photonics Journal
As 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, Wang Zhao, Shuai Wang, Kangjian Yang, Ping Yang, Hongli Guan, Han Guo, Ruifeng He   +7 more
doaj   +1 more source

Commissioning of ARGOS at LBT: adaptive optics procedures [PDF]

, 2015
ARGOS is the laser guide star facility of the Large Binocular Telescope (LBT). It implements a Rayleigh Laser Guide Star system that provides Ground Layer Adaptive Optics (GLAO) correction for the LUCIs, the 2 wide- field near-infrared imagers and multi ...
Deysenroth, Matthias, Gaessler, Wolfgang, Raab, Walfried, Raab, W., Organ de Xivry, G., Storm, J., Peter, D., Puglisi, Alfio, Sivitilli, A., Gemperlien, H., Gemperlein, Hans, Kulas, M., ESPOSITO, Simone, Borelli, Jose, Rabien, Sebastian, PUGLISI, Alfio Timothy, Ziegleder, Julian, Orban de Xivry, Gilles, Rahmer, G., Mazzoni, Tommaso, Sivitilli, Alex, Storm, Jesper, BONAGLIA, MARCO, Rahmer, Gustavo, Lefebvre, Michael, Peter, Diethard, Mazzoni, T., Lefebvre, M., Kulas, Martin, Ziegleder, J., BUSONI, LORENZO, Rabien, S.   +31 more
core   +1 more source