Results 11 to 20 of about 1,424,437 (265)

Adaptive optics based on machine learning: a review

Opto-Electronic Advances, 2022
Adaptive optics techniques have been developed over the past half century and routinely used in large ground-based telescopes for more than 30 years. Although this technique has already been used in various applications, the basic setup and methods have ...
Youming Guo, Libo Zhong, Lei Min, Jiaying Wang, Yu Wu, Kele Chen, Kai Wei, Changhui Rao   +7 more
doaj   +3 more sources

The MAORY first-light adaptive optics module for E-ELT [PDF]

, 2015
The MAORY adaptive optics module is part of the first light instrumentation suite for the E-ELT. The MAORY project phase B is going to start soon.
Ragazzoni R., De Caprio V., Agapito G., Cortecchia F., Delboulbe A., Henault F., Riva M., Giro E., Bonaglia M., Lauria M., Pareschi G., Biliotti V., Briguglio R., Verinaud C., Esposito S., Busoni L., Spano P., Giordano C., Rochat S., Ramsay S., Bregoli G., Oberti S., Ferruzzi D., Ventura N., Arcidiacono C., Lafrasse S., Baruffolo A., Cascone E., Rabou P., Carbonaro L., Felini C., Schreiber L., Bellazzini M., Foppiani I., Xompero M., Roussel F., De Rosa A., Fiorentino G., De Pascale M., Ciliegi P., Ghigo M., Sztefek M. -H., Saracco P., Spavone M., Fini L., Magnard Y., Maurel D., Puglisi A., Roux A., Maiorano E., Le Coarer E., Di Rico G., Riccardi A., Morgante G., Cosentino G., Mapelli M., Moulin T., Fantinel D., Butler R. C., Jocou L., Lombini M., Marchetti E., Gluck L., Michaud L., Feautrier P., Zerbi F. M., Carlotti A., Diolaiti E., Ricciardi S., Abicca R., Mannucci F., Salasnich B., Zins G., Correia J. -J., Patti M., Stadler E., Casali M., Kerber F., Brissaud O., Del Vecchio C.   +79 more
core   +2 more sources

Deep Learning-Based Prediction Algorithm on Atmospheric Turbulence-Induced Wavefront for Adaptive Optics

IEEE Photonics Journal, 2022
Correction performance of an adaptive optics (AO) system is severely limited by its system latency under high temporal frequency distortions. Wavefront prediction methods has been proven to be an effective way to compensate system delay.
Ning Wang, Licheng Zhu, Shuai Ma, Wang Zhao, Xinlan Ge, Zeyu Gao, Kangjian Yang, Shuai Wang, Ping Yang   +8 more
doaj   +1 more source

Large lightweight segmented mirrors for adaptive optics

, 2022
Paper 70153UThis paper examines the possibility of constructing deformable mirrors for adaptive optics with a large number of degrees of freedom, by assembling segmented silicon mirrors with bimorph piezoelectric actuation.
Preumont, A., Roose, S., Bastaits, R., Gebhardt, S., Rodrigues, G., Stockman, Y., Schoenecker, A., Villon, P.   +7 more
core   +1 more source

Accounting for Polychromatic Light in Virtual Shack-Hartmann Wavefront Sensing

Photonic Sensors, 2023
Virtual Shack-Hartmann wavefront sensing (vSHWS) has some significant advantages and is promising for aberration measurement in the field of biomedical optical imaging.
Xian Yue, Yaliang Yang, Hao Dai, Shen Chen, Chao Geng, Yudong Zhang   +5 more
doaj   +1 more source

Intensity adaptive optics [PDF]

Light: Science and Applications
Chao He, Zimo Zhao, Yifei Ma
exaly   +2 more sources

Adaptive Gradient Estimation Stochastic Parallel Gradient Descent Algorithm for Laser Beam Cleanup

Photonics, 2021
For a high-power slab solid-state laser, obtaining high output power and high output beam quality are the most important indicators. Adaptive optics systems can significantly improve beam qualities by compensating for the phase distortions of the laser ...
Shiqing Ma, Ping Yang, Boheng Lai, Chunxuan Su, Wang Zhao, Kangjian Yang, Ruiyan Jin, Tao Cheng, Bing Xu   +8 more
doaj   +1 more source

Optical Fiber Bundle-Based High-Speed and Precise Micro-Scanning for Image High-Resolution Reconstruction

Sensors, 2021
We propose an imaging method based on optical fiber bundle combined with micro-scanning technique for improving image quality without complex image reconstruction algorithms.
Jiali Jiang, Xin Zhou, Jiaying Liu, Likang Pan, Ziting Pan, Fan Zou, Ziqiang Li, Feng Li, Xiaoyu Ma, Chao Geng, Jing Zuo, Xinyang Li   +11 more
doaj   +1 more source

The giant magellan telescope laser tomography adaptive optics system [PDF]

, 2016
The Giant Magellan Telescope presents a unique optical design with seven 8.4 m diameter primary mirrors matched by seven adaptive secondary mirrors (ASM).
Rigaut, Francois, Conan, Rodolphe, d'Orgeville, Celine, Bouchez, A, van Dam, Marcos Alejandro, Bennet, Francis, Uhlendorf, Kristina, Parcell, Simon, Piatrou, Piotr, Trancho, Gelys, Espeland, Brady, Gardhouse, William, Price, Ian   +12 more
core   +1 more source

The Measurement and Correction of Atmospheric Dispersion in 4-Meter Telescope With Adaptive Optical System

IEEE Photonics Journal, 2023
Atmospheric dispersion is a wavelength-dependent effect that affects astronomical observations performed using ground-based telescopes. The effect of atmospheric dispersion for a 4-meter telescope is analyzed and an atmospheric dispersion corrector (ADC)
Guoqing Gao, Hao Chen, Yuanyuan Tang, Wenru Li, Hua Bao, Lingxiao Li   +5 more
doaj   +1 more source