多点测量法与最小偏向角法在色散特性测量中的比较分析  

Comparison of the multi-point measuring method and the least deviation angular method in the measurement of dispersion relation

作　　者：张奕雄[1] 

机构地区：[1]韩山师范学院物理与电子工程系,广东潮州521041

出　　处：《大学物理》2016年第4期33-37,共5页College Physics

基　　金：广东省高等学校教育技术中心立项试验课程项目(GDHBL017)资助

摘　　要：探讨入射角、偏向角关联函数上有利区域的多点测量法,在获取这些非最小偏向角的测量数据后,进行最小二乘法的非线性拟合,得到对应入射光线波长的介质的折射率,从而可对系列谱线的折射率进行色散方程拟合,进而,其拟合结果的不确定度与通常采用的最小偏向角方法实现的色散方程拟合的参数不确定进行比较.实验表明,多点测量拟合法可获得拟合量的较小相对误差及较高相关系数,多点测量法可作为一种高精度测量介质折射率及色散特性的补充方法.Based on the multi- point measurements,the refractive index is fitted from the data of non- least deviation angular by the nonlinear- fitting of Origin（ software）,to gain the dispersion relation of sample. The multiple point measuring method can be used to improve the degree of accuracy of dispersion relation of sample and achieve higher precision measurement than the least deviation angular method,by comparing multiple point measuring method and the least deviation angular method of fitting results of dispersion equation.

关 键 词：多点测量拟合法 最小偏向角 折射率 非线性拟合 色散特性 

分 类 号：O482.55[理学—固体物理]