Response analysis of holography-based modal wavefront sensor

被引:39
作者
Dong, Shihao [1 ]
Haist, Tobias [1 ]
Osten, Wolfgang [1 ]
Ruppel, Thomas [2 ]
Sawodny, Oliver [2 ]
机构
[1] Univ Stuttgart, Inst Tech Opt, SCoPE, D-70569 Stuttgart, Germany
[2] Univ Stuttgart, Inst Systemdynam, SCoPE, D-70569 Stuttgart, Germany
关键词
COMPUTER-GENERATED HOLOGRAM; ADAPTIVE OPTICS; SHACK-HARTMANN; TURBULENCE;
D O I
10.1364/AO.51.001318
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The crosstalk problem of holography-based modal wavefront sensing (HMWS) becomes more severe with increasing aberration. In this paper, crosstalk effects on the sensor response are analyzed statistically for typical aberrations due to atmospheric turbulence. For specific turbulence strength, we optimized the sensor by adjusting the detector radius and the encoded phase bias for each Zernike mode. Calibrated response curves of low-order Zernike modes were further utilized to improve the sensor accuracy. The simulation results validated our strategy. The number of iterations for obtaining a residual RMS wavefront error of 0.1 lambda is reduced from 18 to 3. (C) 2012 Optical Society of America
引用
收藏
页码:1318 / 1327
页数:10
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