摘要
在基础光学框架内,通过杨氏双孔干涉实验中线偏振光的干涉及线偏振光经过两任意厚度晶片的干涉等几个实例,说明了基于矢量波叠加概念的电磁干涉的基本思想、基本分析方法和基本现象.偏振光干涉时,观测平面上可以出现或不出现光强的周期性空间调制,但一般都产生光场偏振态的周期调制.它表明了光的矢量性对干涉的重要影响,并可揭示只分析强度条纹时被掩盖的一些物理效应.
The basic analytic method and phenomena of electromagnetic interference is explained through the discussions of Young＇s experiment of polarized light within the framework of fundamental optics based on the superposition of vectorial waves, including the interference of two linearly polarized beams and the case of one linear beam passing through a pair of wave plates of arbitrary thickness. It shows that generally the spatial mod- ulation of polarization will occur at the observation plane with or without intensity modulation. These analyses indicate the important role of vectorial properties of light waves in interference and may uncover some physical effects of interference hidden when only the intensity fringes are concerned.
出处
《大学物理》
北大核心
2007年第6期1-4,共4页
College Physics
基金
国家自然科学基金资助项目(60177002
60477005)
教育部高校博士点基金(20020422047)资助项目
国家精品课程(<光学>)建设资助项目(2006)
关键词
杨氏实验
电磁干涉
矢量波叠加
偏振光
衬比度
Young＇ s experiment
electromagnetic interference
superposition of vectorial waves
polarization
contrast
