基于RUN优化算法的波前校正系统  

Wavefront Correction System Based on RUN Optimization Algorithm

作　　者：杨慧珍 臧祥栋 张之光 刘金龙 YANG Huizhen;ZANG Xiangdong;ZHANG Zhiguang;LIU Jinlong(School of Electronic Engineering,Jiangsu Ocean University,Lianyungang 222005,China;Engineering School of Network&Telecommunications,Jinling Institute of Technology,Nanjing 211169,China)

机构地区：[1]江苏海洋大学电子工程学院,连云港222005 [2]金陵科技学院网络与通信工程学院,南京211169

出　　处：《光子学报》2023年第11期230-238,共9页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.U2141255,11573011);金陵科技学院高层次人才研究项目(No.jit-rcyj-202301)。

摘　　要：将龙格-库塔优化器用于无波前探测自适应光学系统,提出基于RUN的自适应光学控制方法。以61单元变形镜为波前校正器件,不同湍流强度下的畸变波前为校正对象,建立基于RUN优化算法的自适应光学系统模型。对比分析基于RUN、PSO、DEA和GA等算法的波前校正效果、校正速度和局部极值。结果表明,相比基于粒子群优化算法、差分进化算法和遗传算法的自适应光学系统,在取得相同校正效果时,基于RUN优化算法的波前校正系统在不同湍流条件下的校正速度均提高三倍以上,且RUN算法不易陷入局部极值。研究结果可为基于RUN优化算法的波前校正系统的实际应用提供理论基础。The Wavefront Sensorless(WFSless)Adaptive Optics(AO)system is simple and easy to implement because it does not require a wavefront sensor and can be applied to some environments where conventional adaptive optics systems cannot work,such as multiphoton microscopy for biological imaging.The WFSless AO technology has not been adopted pervasively in the early days due to the lack of suitable control algorithms.With the emergence of new optimization algorithms recently,it has been widely studied and applied in related fields.Metaheuristic algorithms,e.g.,Genetic Algorithm(GA),Particle Swarm Optimization(PSO),and Differential Evolution Algorithm(DEA)are commonly used as the control algorithms of WFSless AO systems.However,these algorithms have some problems,i.e.,slow convergence speed,insufficient global search efficiency,and poor adaptability to different wavefront aberrations,which make them insufficient to be applied in practice.We propose to adapt the RUNge Kutta optimizer(RUN)to the system control algorithm in this paper.An adaptive optics system model based on the RUN optimization algorithm is established with a 61-element deformable mirror as a wavefront correction device.Wavefront aberrations with different turbulence levels are used as correction objects.The performance,speed,and local extreme values of the optical systems based on RUN,PSO,DEA,and GA algorithms are compared and analyzed.Results show that all four algorithms can obtain good convergence,and performance metrics of the RUN algorithm and GA are similar and obviously better than those of PSO and DEA after convergence is achieved.The Analysis of convergence speed shows that the speed decreases with the increase of turbulence level,but the RUN algorithm is significantly faster than other three algorithms.Compared with PSO,DEA,and GA,the convergence speed of the RUN algorithm is about 4.5,3.3,and 3.5 times faster under D/r0=5,about 3.9,3.8,and 4.1 times faster under D/r0=10;and about 3.8,3.4,and 5.3 times faster under D/r0=15,respectively.Additionally

关 键 词：自适应光学 控制算法 龙格-库塔优化器 变形镜 波前校正 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]