Mehta N C, Allen C W
Appl Opt. 1992 Oct 20;31(30):6510-8. doi: 10.1364/AO.31.006510.
A novel approach for the remote alignment of segmented mirrors is presented. In comparison with conventional methods in which near-field measurements (in the form of displacements between neighboring segments or phase across the mirror) are used in a feedback control system, the far-field optimization method utilizes only attributes of the point-spread function. A figure of merit based on the far-field intensity is used to configure iteratively the segmented mirror to alignment. Following computer simulations, we conduct successful laboratory experiments to validate the far-field optimization concept. The potential utility of far-field optimization to the alignment of other adaptive optical systems and to dynamic wave-front control is briefly discussed.
提出了一种用于分段镜远程对准的新方法。与传统方法相比，传统方法是在反馈控制系统中使用近场测量（以相邻段之间的位移或镜面上的相位形式），而远场优化方法仅利用点扩散函数的属性。基于远场强度的品质因数用于迭代配置分段镜以实现对准。经过计算机模拟后，我们成功进行了实验室实验以验证远场优化概念。简要讨论了远场优化在其他自适应光学系统对准和动态波前控制方面的潜在用途。
