光学学报, 2016, 36 (3): 0301003, 网络出版: 2016-03-03   

波前曲率传感自适应光学两种闭环控制方法的对比

Comparison of Two Close-Loop Control Methods in Adaptive Optics with Wavefront Curvature Sensing
作者单位
1 华北理工大学电气工程学院, 河北 唐山 063009
2 华北理工大学图书馆, 河北 唐山 063009
3 中国科学院光电技术研究所自适应光学实验室, 四川 成都 610209
摘要
针对波前曲率传感自适应光学,对比分析了直接拟合法和拉普拉斯算子本征模式法两种闭环控制方法。简要分析了两种方法的基本原理,并建立了36 单元曲率型自适应光学仿真模型,进行了大气湍流波前畸变闭环校正数值仿真。结果表明,与直接拟合法相比,存在最佳模式数量使得拉普拉斯算子本征模式法具有更高的稳定性和精度;尤其是当波前畸变较大时,直接拟合法的稳定性和校正精度明显变差。
Abstract
For adaptive optics with curvature sensor, two close-loop wavefront control techniques those based on direct fitting method and Laplacian eigenfunctions method are comparative analyzed. The basic principles of two methods are analyzed, and then a numerical simulation model of 36-element curvature adaptive optics is setup and simulations of atmospheric turbulence wavefront aberration correction are carried out. The results show that, comparing with the direct fitting method, the stability and correction accuracy of Laplacian eigenfunctions method are obvious better when the proper modes are chosen, and the stability and accuracy of the direct fitting method are significantly worse when the phase distortion is larger.
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陈波, 杨靖, 李新阳, 李小阳, 杨旭. 波前曲率传感自适应光学两种闭环控制方法的对比[J]. 光学学报, 2016, 36(3): 0301003. Chen Bo, Yang Jing, Li Xinyang, Li Xiaoyang, Yang Xu. Comparison of Two Close-Loop Control Methods in Adaptive Optics with Wavefront Curvature Sensing[J]. Acta Optica Sinica, 2016, 36(3): 0301003.

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