空军工程大学学报（自然科学版）Issue(3)：80-84,5.DOI:10.3969/j.issn.1009-3516.2014.03.019
倏逝波及其能流密度研究
Research on Evanescent Wave and Its Energy Flux Density
摘要
Abstract
Evanescent wave in total internal reflection has special characteristics and important applications. It is very necessary to research on the characteristics of the energy flow of evanescent wave.But the exist-ing studies are simple or incomplete.In this paper,based on the theory of electromagnetic field,the math-ematical expressions of electric field intensity,magnetic field intensity,energy flux density and average energy flux density(AEFD)of the evanescent wave are derived,as the incident light is linearly polarized. By numerical computation,the links between the modulus and direction of AEFD of evanescent wave to the incident angle and incident light vector direction,are analyzed.The conclusions include that the energy flow of evanescent wave is limited within a thin layer near the interface of media,the modulus of AEFD is influenced by incident angle,and there is an angle between the direction of AEFD and incident plane,as well;only as the incident light vector is parallel with or perpendicular to the incident plane,the direction of AEFD of evanescent wave is in the incident plane.These mathematical expressions of these physical quantities and conclusions are helpful for understanding the evanescent wave and doing the related studies.关键词
全反射/倏逝波/电磁场理论/能流密度Key words
total internal reflection/evanescent wave/theory of electromagnetic field/energy flux density分类
数理科学引用本文复制引用
昝会萍,谷同凯,张引科..倏逝波及其能流密度研究[J].空军工程大学学报（自然科学版）,2014,(3):80-84,5.基金项目
陕西省教育厅专项科研计划资助项目(2013JK0639) （2013JK0639）
