Small-dynamic-angle measurement using tangent relationship and phase-modulating technique

被引：2
|
作者：
Zheng, Defeng [1 ]
Wang, Xiangzhao
Sasaki, Osami
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Inst Opt Lab, Shanghai 201800, Peoples R China
[2] Grad Sch Chinese Acad Sci, Beijing 100039, Peoples R China
[3] Daegu Univ, Sch Comp & Commun Engn, Gyongsan, Kyungbuk, South Korea
来源：
OPTICAL ENGINEERING | 2007年 / 46卷 / 09期
基金：
中国国家自然科学基金;
关键词：
optical measurement; angle measurement; interferometer; phase modulation;
D O I：
10.1117/1.2784480
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method using two prisms for measurement of small dynamic angles is proposed in which the measurement is based on a simple tangent equation and a phase-modulating interferometer with a laser diode to measure dynamic optical path differences with higher accuracy. Owing to the simple tangent equation, the symmetry requirement on the two prisms in the optical configuration is eliminated, and easy measurement of the separations between two parallel beams with a position-sensitive detector is achieved. Small-dynamic-angle measurements are experimentally demonstrated with high accuracy. (C) 2007 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页数：4
相关论文
共 50 条
12345