|
|||||
|
|
Parallel Plate Interferometer with a Reflecting Mirror for Measuring Angular Displacement |
|
| Authors: | Defeng Zheng Xiangzhao Wang Osami Sasaki |
| Affiliation: | (1) Information Optics Laboratory, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China;(2) Graduate School of Chinese Academy of Sciences, Beijing, 100039, China;(3) Faculty of Engineering, Niigata University, Niigata 950-2181, Japan |
| Abstract: | A parallel plate interferometer with a reflecting mirror for measuring angular displacement is proposed. A deflection angle of a beam caused by an angular displacement is amplified by use of a reflecting mirror to increase the optical path difference (OPD) in the plane-parallel plate, which provides high sensitivity of the phase measurement. Detection of light transmitted through the plane-parallel plate with a position sensitive detector (PSD) enables high accurate measurement of the initial angle of incidence to the plane-parallel plate with insensitivity to stray light. The improved parallel plate interferometer achieves a measurement repeatability of 10−8 rad. |
| Keywords: | angular displacement interference measurement plane-parallel plate laser diode phase measurement |
| 本文献已被 SpringerLink 等数据库收录！ | |