scholarly journals Closed-loop adaptive optics with a single element for wavefront sensing and correction

2011 ◽  
Vol 36 (18) ◽  
pp. 3702 ◽  
Author(s):  
Raúl Martínez-Cuenca ◽  
Vicente Durán ◽  
Justo Arines ◽  
Jorge Ares ◽  
Zbigniew Jaroszewicz ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Single Element ◽  
Wavefront Sensing

Design and Development of a Closed Loop Adaptive Optics System for Wavefront Sensing and Control

2005 ◽  
Vol 34 (2) ◽  
pp. 67-81 ◽  
Author(s):  
A. R. Ganesan ◽  
P. Arulmozhivarman ◽  
D. Mohan ◽  
Ashok Kumar ◽  
A. K. Gupta
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Wavefront Sensing ◽  
Design And Development ◽  
And Control ◽  
Adaptive Optics System

Laboratory quantification of a plenoptic wavefront sensor with extended objects

2020 ◽  
Vol 497 (4) ◽  
pp. 4580-4586
Author(s):  
Zhentao Zhang ◽  
Nazim Bharmal ◽  
Tim Morris ◽  
Yonghui Liang
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Optical Design ◽  
Wavefront Sensor ◽  
Wavefront Sensing ◽  
Wide Field ◽  
Loop Correction ◽  
Wavefront Correction ◽  
Set Up ◽  
Experimental Bench

ABSTRACT Adaptive optics (AO) is widely used in ground-based telescopes to compensate the effects of atmosphere distortion, and the wavefront sensor is a significant component in the AO systems. The plenoptic wavefront sensor has been proposed as an alternative wavefront sensor adequate for extended objects and wide field of views. In this paper, a experimental bench has been set up to investigate the slope measurement accuracy and closed-loop wavefront correction performance for extended objects. From the experimental results, it has been confirmed that plenoptic wavefront sensor is suitable for extended objects wavefront sensing with proper optical design. The slope measurements have a good linearity and accuracy when observing extended objects. The image quality is significantly improved after closed-loop correction. A method of global tip/tilt measurement using only plenoptic wavefront sensor frame is proposed in this paper, it is also a potential advantage of plenoptic wavefront sensor in extended objects wavefront sensing.

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.

Adaptive optics confocal microscopy using direct wavefront sensing

2011 ◽  
Vol 36 (7) ◽  
pp. 1062 ◽  
Author(s):  
Xiaodong Tao ◽  
Bautista Fernandez ◽  
Oscar Azucena ◽  
Min Fu ◽  
Denise Garcia ◽  
...  
Keyword(s):  
Confocal Microscopy ◽  
Adaptive Optics ◽  
Wavefront Sensing

Wavefront sensing and closed-loop control for the Fizeau interferometry testbed

2007 ◽  
Author(s):  
Richard G. Lyon ◽  
Kenneth G. Carpenter ◽  
Alice Liu ◽  
Peter Petrone ◽  
Peter Dogoda ◽  
...  
Keyword(s):  
Closed Loop ◽  
Wavefront Sensing ◽  
Closed Loop Control ◽  
Loop Control
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