scholarly journals Simulations of closed-loop wavefront reconstruction for multiconjugate adaptive optics on giant telescopes

2003 ◽  
Author(s):  
Brent L. Ellerbroek ◽  
Curtis R. Vogel
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Wavefront Reconstruction

scholarly journals Improved Wavefront Reconstruction and Correction Strategy for Adaptive Optics System with a Plenoptic Sensor

2021 ◽  
pp. 1-1
Author(s):  
Jintian Hu ◽  
Chen Tao ◽  
Xudong Lin ◽  
Liang Wang ◽  
Qichang An ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Wavefront Reconstruction ◽  
Adaptive Optics System

scholarly journals 1178 J, 527 nm near diffraction limited laser based on a complete closed-loop adaptive optics controlled off-axis multi-pass amplification laser system

2021 ◽  
Vol 9 ◽  
Author(s):  
Deen Wang ◽  
Xin Zhang ◽  
Wanjun Dai ◽  
Ying Yang ◽  
Xuewei Deng ◽  
...  
Keyword(s):  
Laser Beam ◽  
Adaptive Optics ◽  
Closed Loop ◽  
Focal Spot ◽  
Beam Quality ◽  
Laser System ◽  
Diffraction Limit ◽  
Kdp Crystal ◽  
Main Amplifier

Abstract A 1178 J near diffraction limited 527 nm laser is realized in a complete closed-loop adaptive optics (AO) controlled off-axis multi-pass amplification laser system. Generated from a fiber laser and amplified by the pre-amplifier and the main amplifier, a 1053 nm laser beam with the energy of 1900 J is obtained and converted into a 527 nm laser beam by a KDP crystal with 62% conversion efficiency, 1178 J and beam quality of 7.93 times the diffraction limit (DL). By using a complete closed-loop AO configuration, the static and dynamic wavefront distortions of the laser system are measured and compensated. After correction, the diameter of the circle enclosing 80% energy is improved remarkably from 7.93DL to 1.29DL. The focal spot is highly concentrated and the 1178 J, 527 nm near diffraction limited laser is achieved.

A Closed Loop Layer‐oriented Adaptive Optics Test Bed: Applications to Ground‐Layer Adaptive Optics

2007 ◽  
Vol 119 (860) ◽  
pp. 1114-1125 ◽  
Author(s):  
S. E. Egner ◽  
W. Gaessler ◽  
T. M. Herbst ◽  
R. Ragazzoni
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Ground Layer ◽  
Test Bed
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