交连值对斜率响应矩阵和迭代矩阵稀疏度的影响  

Influence of coupling coefficient on sparseness of slope response matrix and iterative matrix

作　　者：程生毅[1,2,3] 陈善球[1,3] 董理治[1,3] 刘文劲[1,3] 王帅[1,3] 杨平[1,3] 敖明武[4] 许冰[1] 

机构地区：[1]中国科学院光电技术研究所,成都610209 [2]中国科学院大学,北京100049 [3]中国科学院自适应光学重点实验室,成都610209 [4]电子科技大学,成都610054

出　　处：《物理学报》2014年第7期136-142,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11173008);四川省杰出青年学术技术带头人资助计划(批准号:2012JQ0012)资助的课题~~

摘　　要：基于529单元自适应光学(AO)系统,分析了变形镜到哈特曼波前传感器的斜率响应矩阵的稀疏特性、波前复原中迭代矩阵的稀疏特性.在变形镜驱动器间距不变的条件下,研究了驱动器交连值对斜率响应矩阵稀疏度、迭代矩阵稀疏度以及AO系统校正能力的影响.研究表明,斜率响应矩阵和迭代矩阵的稀疏度随交连值的增大而减小;交连值过大或者过小都会影响AO系统的稳定性和校正能力.最后,综合斜率响应矩阵和迭代矩阵的稀疏度、系统稳定性和校正能力,给出了交连值的合理取值范围.Based on a 529-actuator adaptive optic （AO） system, the sparseness of slope response matrix from deformable mirror to Hartmann wavefront sensor and the sparseness of iterative matrix in wavefront reconstruction are analyzed. The influence of actuator coupling coefficient on the slope response matrix sparseness, the iterative matrix sparseness, and the AO system correction quality are also studied under the condition of constant actuator spacing. Larger coupling coefficient results in a lower sparseness of slope response matrix and an iterative matrix. Too large or too small coupling coefficient will lead to lower stability and correction quality of AO system. Finally, the optimal range of coupling coefficient is provided by the balancing correction quality, sparseness of slope response matrix, and stability.

关 键 词：驱动器交连值 斜率响应矩阵 迭代矩阵 稀疏度 

分 类 号：O439[机械工程—光学工程] O151.21[理学—光学]