Tang Shanzhi, Wang Zhao, Li Ming, Gao Junxiang, Jiang Yongcheng, Zhang Yao
Laboratory of X-ray Optics and Technology, Institute of High Energy Physics, CAS, Beijing 100049, China.
School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Rev Sci Instrum. 2016 Feb;87(2):026101. doi: 10.1063/1.4940985.
The choice of an actual reflector instead of an ideal or perfect reflector has to be dealt with for heterodyne-interferometric roll angle measurement methods. The candidates of regular reflectors such as corner cube prism and right angle prism are analyzed by the homogeneous coordinate transformation method, which provides a theoretical basis for the determination of the actual reflector. Furthermore, the influences of the phase loss of the determined reflector are strictly argued due to non-perfect or natural characteristics itself. Several tactics are considered to solve this problem by phase analysis. By contrast, it is an optimal choice that mirrors-based right angle prism can improve evidently the phase loss by experiment.
