Adaptive optics test bench for predictive wavefront correction

2019 ◽  
Author(s):  
Lidia A. Bolbasova ◽  
Alexey N. Gritsuta ◽  
Vitaly V. Lavrinov ◽  
Vladimir P. Lukin ◽  
Anton A. Selin ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Test Bench ◽  
Wavefront Correction

Woofer-Tweeter Adaptive Optics Test Bench

2006 ◽  
Author(s):  
O. Keskin ◽  
P. Hampton ◽  
R. Conan ◽  
C. Bradley ◽  
A. Hilton ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Test Bench

Adaptive optics wavefront correction techniques of vortex beams

2017 ◽  
Vol 46 (2) ◽  
pp. 201001
Author(s):  
高春清 Gao Chunqing ◽  
张世坤 Zhang Shikun ◽  
付时尧 Fu Shiyao ◽  
胡新奇 Hu Xinqi
Keyword(s):  
Adaptive Optics ◽  
Wavefront Correction ◽  
Vortex Beams

scholarly journals NAOMI: the adaptive optics system of the Auxiliary Telescopes of the VLTI

2019 ◽  
Vol 629 ◽  
pp. A41 ◽  
Author(s):  
J. Woillez ◽  
J. A. Abad ◽  
R. Abuter ◽  
E. Aller Carpentier ◽  
J. Alonso ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Single Mode ◽  
Large Telescope ◽  
Wavefront Correction ◽  
Design Performance ◽  
Very Large Telescope ◽  
Fringe Tracking ◽  
Adaptive Optics System ◽  
Atmospheric Seeing

Context. The tip-tilt stabilisation system of the 1.8 m Auxiliary Telescopes of the Very Large Telescope Interferometer was never dimensioned for robust fringe tracking, except when atmospheric seeing conditions are excellent. Aims. Increasing the level of wavefront correction at the telescopes is expected to improve the coupling into the single-mode fibres of the instruments, and enable robust fringe tracking even in degraded conditions. Methods. We deployed a new adaptive optics module for interferometry (NAOMI) on the Auxiliary Telescopes. Results. We present its design, performance, and effect on the observations that are carried out with the interferometric instruments.

Imaka: a test bench for very wide field adaptive optics at the UH2.2m telescope

2020 ◽  
Author(s):  
Olivier Lai ◽  
Mark Chun ◽  
Jessica Lu ◽  
Doug Toomey ◽  
Christoph Baranec ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Test Bench ◽  
Wide Field

scholarly journals Evaluation of channel capacities of OAM-based FSO link with real-time wavefront correction by adaptive optics

2014 ◽  
Vol 22 (25) ◽  
pp. 31337 ◽  
Author(s):  
Ming Li ◽  
Milorad Cvijetic ◽  
Yuzuru Takashima ◽  
Zhongyuan Yu
Keyword(s):  
Real Time ◽  
Adaptive Optics ◽  
Wavefront Correction

Chaotic Genetic Algorithm for Wavefront Correction in Adaptive Optics

2014 ◽  
Vol 666 ◽  
pp. 293-297
Author(s):  
Stephen Kotiang ◽  
Jae Ho Choi
Keyword(s):  
Genetic Algorithm ◽  
Adaptive Optics ◽  
Logistic Function ◽  
Wavefront Correction ◽  
Chaos Search ◽  
Deformable Membrane ◽  
Deformable Membrane Mirror ◽  
Encoding Method ◽  
Wave Aberration ◽  
Standard Genetic Algorithm

Chaotic genetic algorithm (CGA) is presented as an optimization algorithm for sensorless adaptive optics system to compensate atmospheric wave aberration. Chaos search strategy is incorporated into standard genetic algorithm by the logistic function that possess convergent, bifurcating, and chaotic characteristics during evolution to control the convergence of genetic algorithm. A real number encoding method is adopted in the search process and CGA is used to control a 61-actuator deformable membrane mirror (DM).The algorithm uses light intensity detected on the focal plane as the objective function to optimize, and the simulation results show CGAperforms faster than GA and thus can effectively be used in AO systems.

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