曲率探测的自适应光学Zernike模式的闭环校正

Zernike mode close-loop correction of adaptive optics with the curvature sensor

提出了一种更为简单的基于曲率探测的自适应光学闭环算法。首先,对算法的原理和闭环过程做了详细分析。然后,建立了一个自适应光学仿真模型,针对Kolmogorov特性的大气湍流相位畸变做了闭环校正。仿真结果表明,该闭环模型对大气湍流引起的波前畸变具有很高的校正精度。在此基础上,利用液晶空间光调制器作为波前校正器,搭建了相应的闭环实验系统,做了闭环实验分析。实验结果与仿真结果一致,表明基于该算法的自适应光学能够实时校正大气湍流引起的相位畸变,由此验证了算法的可行性。

A simpler close-loop algorithm for adaptive optics（AO） based on curvature detection was proposed.Firstly,both the algorithm principle and close-loop procedure were analyzed in detail.Then,a numerical simulation model of adaptive optics was set up,and the close-loop correction of phase aberration result from atmospheric turbulence with Kolmogorov spectrum was performed.The simulation results show that the AO model can correct the phase aberration successfully.After all these,an experimental AO system was set up in which the LC-SLM was used as the wavefront corrector and the close-loop correction was performed.The experimental results are coincident with the simulation results,and both of them illuminate that the AO based on that algorithm can be used to correct the aberration in real time,so that the feasibility of algorithm is confirmed.