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。
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.
出处
《光学技术》
CAS
CSCD
北大核心
2015年第2期101-105,共5页
Optical Technique
关键词
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
