角锥阵列相位精密调整机构设计及锁相实验  

Design of the phase precise adjustment mechanism of the CCR array and its phase-locked experiment

作　　者：余焘 李新阳[1,2] 李枫[1,2] 耿超[1,2] Yu Tao;Li Xinyang;Li Feng;Geng Chao(Key Laboratory on Adaptive Optics,Chinese Academy of Sciences,Chengdu 610209,China;Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院自适应光学重点实验室,四川成都610209 [2]中国科学院光电技术研究所,四川成都610209 [3]中国科学院大学,北京100049

出　　处：《红外与激光工程》2020年第8期154-159,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金面上项目(61675205)。

摘　　要：为了校正角锥棱镜阵列中子孔径的piston误差,设计了一种多单元一维相位精密调整机构,提出了一种基于相干合成原理的角锥棱镜阵列piston误差检测、调整方法。首先,设计了一种机械装置使单个角锥棱镜能够进行一维相位调整;其次,利用远场成像原理,分析了角锥阵列piston误差对远场衍射成像的影响;最后,基于远场光斑的不同,提出了一种角锥阵列piston误差的检测、调整方法。实验结果表明:角锥阵列相位精密调整机构能够达到0.1μm级的调整精度,通过观测角锥棱镜阵列反射光束远场衍射图像,调整角锥棱镜单元相对位置,将反射光束PIB提升至0.49,远场图像接近仿真结果,基本实现了角锥棱镜阵列子孔径的piston误差的校正,提升了角锥棱镜阵列使用效率,扩展了角锥棱镜阵列使用场景。In order to correct the piston phase error of the corner cube reflector(CCR)array,a multi-element one-dimensional phase precise adjustment mechanism was designed,and a method of piston phase error detection and adjustment based on the coherent synthesis principle was proposed.Firstly,a mechanical device was designed to adjust the phase of a single corner cube reflector.Then,based on the principle of far-field imaging,the influence of piston phase error on far-field diffraction imaging was analyzed.Secondly,based on the difference of far-field facula,a method of measuring and adjusting the piston phase error of pyramid array was proposed.The experimental results show that the phase precise adjustment mechanism of the CCR array can achieve the adjustment accuracy of 0.1μm level.By observing the far-field image of the reflected beam of the CCR array,adjusting the relative position of the CCR array,the PIB of the reflected beam is raised to 0.49,and the far-field image is close to the results of simulation.The piston phase error correction of the sub aperture of the CCR array is basically realized,and it improves the use efficiency of CCR array and expands the use scenarios of CCR array.

关 键 词：角锥棱镜阵列 相位精密调整 相干合成 锁相控制 

分 类 号：TN243[电子电信—物理电子学]