用数字干涉仪测量变形镜影响函数的实验研究

分析了变形反射镜面形影响函数的意义，鉴于自适应光学系统中波前探测大都以测量波前斜率为基础的特点，提出应研究斜率影响函数，并在此基础上构成波前复原矩阵。还介绍了用数字干涉仪测量变形镜影响函数的方法和结果，并对测量结果进行了分析，得到了影响函数的各种参数，例如：交连值，高斯指数，特征宽度等。并将干涉法测量斜率影响函数的结果与实际的哈特探测器的测试结果进行了比较。

Experiment of Measuring Influence Function of Deformable Mirror Using Digital Interferometer

n this paper the figure influence function of deformable mirror is discussed.In view of that the most useful wave front sensing methods are based on measuring the wayefront slopes, we propose to measure the slope influence function, by using which the wave front reconstruction matrix is composed. The method of measuring influence function of deformable mirror by digital interferometer is introduced. From the measured data, several parameters of influence function such as coupling, Gauss exponent and characteristic width can be obtained. The interferomtric results of slope influence function are compared with the measuring data from a H-S sensor.