摘要
通过密勒矩阵和斯托克斯参量法对一种1/4波片的相位延迟分布的测量模型进行了推导,并设计出一种空间分光移相器,取代一般测量系统中的检偏器,使得系统能于瞬间同时采集四幅具有90°移相步长的干涉图,避免了环境振动对测量的影响,从而可以对1/4波片的相位延迟分布进行动态在线测量.对一个实际标称波长632.8nm的1/4波片进行了测量,结果显示其平均延迟量为149.36nm,且接近75%部分其相位延迟误差在5nm之内,显示出较好的延迟均匀性.
The measurement model for the retardation distributing of the quarter wave plate was introduced by Muller matrix and Stokes parameter. And four patterns with phase shifting of 90°in turn were eatched simultaneously by an especial spatial splitting phase-shifter. Therefore, the introduced system has antivibration performance and the dynamic testing on line may be performed. An actual measurement of a quarter wave plate which wavelength is 632. 8 nm was given out finally. Its averaging retardation was 149.36 nm,and there is about 75% of the testing area whose retardation error is less than 5 nm. So it had fine retardation uniformity.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2008年第11期2296-2299,共4页
Acta Photonica Sinica
基金
江苏省“六大人才高峰”(06-E-030)资助
关键词
波片
相位延迟
移相技术
动态测量
Wave plate
Phase retardation
Phase-shifting technique
Dynamic testing
作者简介
Tel：025—84315427 Email：weile_ni@163．com ZUO Fen received her B. S degree in the physics department of Nanjing Normal University, in 1996. Then she joined Huaiyin Teacherls College. Now she is a lecturer. She is pursuing Ph.D. degree in optical engineering at Nanjing University of Science and Technology. Her research interests focus on optical testing and laser applications.
