光学技术, 2015, 41 (2): 101, 网络出版: 2015-04-14
四棱锥波前传感技术数值仿真和重构研究
Numerical simulation and reconstruction of pyramid wave-front sensor
自适应光学 波前重构 四棱锥传感技术 调制模式 adapting optics wave-front reconstruction pyramid wave-front sensor modulation
摘要
介绍了四棱锥传感技术的基本原理和数学模型.当以调制模式工作时,可计算复原矩阵或梯度矩阵.分析了调制半径在不同像差条件下对复原速度和精度的影响,对无调制模式采用复原矩阵进行了仿真,并与调制模式进行了对比.实验结果表明:无调制状态下,经过校正,残差RMS可减至0.05,调制状态下,梯度矩阵重构效果较好,残差RMS可减至0.02;对大像差的输入信号,调制模式的精度和速度都优于无调制模式.结果表明,四棱锥波前传感技术具有高速度、高精度和灵活的工作模式,是一种先进的波前传感技术.
Abstract
Two reconstruction matrixes based on Zernike Polynomials and their gradient are compared respectively in reconstruction of modulation pyramid wave-front sensor(PWFS),the effect of modulation radius on the reconstruction speed and precision is analyzed,and non-modulation PWFS is simulated as a comparison.The results show that the residual RMS of non-modulation PWFS is 0.05,and the residual RMS of modulation PWFS with a gradient matrix is 0.02.For big aberration,modulation PWFS works faster and more precise than non-modulation PWFS.The numerical simulation proves that PWFS as a new wave-front sensor is both precise and flexible.
张彦夫, 王建立, 吴元昊, 崔博川. 四棱锥波前传感技术数值仿真和重构研究[J]. 光学技术, 2015, 41(2): 101. ZHANG Yanfu, WANG Jianli, WU Yuanhao, CUI Bochuan. Numerical simulation and reconstruction of pyramid wave-front sensor[J]. Optical Technique, 2015, 41(2): 101.
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