一种测量14波片相位延迟量的新方法.pdfVIP

第45卷第7期 红外与激光工程 2016年7月 Vol.45No.7 InfraredandLaserEngineering Jul.2016 一种测量 1/4波片相位延迟量的新方法 1，2 1 1 谭 巧 ，徐启峰 ，谢 楠 (1. 福州大学 电气工程与自动化学院，福建 福州 350108； 2. 福建信息职业技术学院 电子工程系，福建 福州 350012) 摘 要：提出了一种通过软件计算输出椭圆偏振光矢的长短轴来测量 1/4波片相位延迟量的新方 法，其测量光路简单易行，仅由光源、起偏器、待测 1/4波片、检偏器和光功率计组成，测量结果通过 Mathcad进行分析运算，得到波片的相位延迟量。文中详细论证了新方法的原理过程，给出了应用实 例与误差分析，结果表明：新方法的绝对测量误差小于0.26°。该方法的主要优点是光学器件少，操作 简单，易于实现，引入误差小，测量精度高。 关键词：测量； 1/4波片； 琼斯矩阵； 相位延迟； 椭圆偏振 中图分类号：O432.2 文献标志码：A DOI：10.3788/IRLA201645.0717002 New method for retardance measurement of a quarter-wave plate 1,2 1 1 Tan Qiao , Xu Qifeng, Xie Nan (1. College of Electric Engineering and Automation, Fuzhou University, Fuzhou 350108, China; 2. Department of Electronic Engineering, Fujian Polytechnic of Information Technology, Fuzhou 350012, China) Abstract: A new method for retardation measurement of a quarter-wave plate was proposed. It was realized by calculating the long and short axes values of the output elliptical polarized light based on computer simulations. The optical measuring system was simply composed of a laser, a polarizer, the quarter-wave plate to be measured, an analyzer and an optical detector. The real retardation can be obtained by a data processing with Mathcad. The principle of this new method was theoretically analyzed and an application example and its error analysis were demonstrated in this paper. The experiment results show that the absolute error is less than 0.26°. Therefore the ma