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首页> 外文期刊>Journal of Optics >DESIGN AND DEVELOPMENT OF A CLOSED LOOP ADAPTIVE OPTICS SYSTEM FOR WAVEFRONT SENSING AND CONTROL
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DESIGN AND DEVELOPMENT OF A CLOSED LOOP ADAPTIVE OPTICS SYSTEM FOR WAVEFRONT SENSING AND CONTROL

机译：一种用于前波检测和控制的闭环自适应光学系统的设计与开发

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摘要

Atmospheric distortion limits the quality of images obtained with ground-based telescopes. Similarly, laser beam propagation through turbulent atmosphere results in discontinuity in satellite optical links. Adaptive Optic techniques provide compensation for the aberrations introduced due to the random refractive index fluctuations of the atmosphere. In this paper, we present the practical details of the successful design and development of a low-cost Shack-Hartmann wavefront analyzer, as well as a closed loop Adaptive Optics system which compensates the global tilt and the local phase fluctuations of a wavefront. The Shack-hartmann sensor measures the wavefront profile in real time and generates correction signals. Global tilt measurements to accuracy of 19 μ radians and phase profiles up to λ/50 have been acheived. Dynamic corrections have been made with tip-tilt mirror and a deformable mirror. The Opto-mechanical system, software design, and implementation are described. Experimental results of wavefront measurements and correction of aberrations are presented.
机译：大气畸变限制了地面望远镜获得的图像质量。同样，激光束通过湍流传播会导致卫星光学链路不连续。自适应光学技术可补偿由于大气的随机折射率波动而引起的像差。在本文中，我们介绍了成功设计和开发低成本Shack-Hartmann波前分析仪以及闭环自适应光学系统的实用细节，该系统补偿了波前的整体倾斜和局部相位波动。 Shack-hartmann传感器可实时测量波前轮廓并生成校正信号。已经实现了高达19μ弧度的精度和高达λ/ 50的相位剖面的整体倾斜测量。使用倾斜镜和可变形镜进行了动态校正。描述了光机械系统，软件设计和实现。给出了波前测量和像差校正的实验结果。

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