部分相干电磁场能量和能流密度的计算  

On the Calculation of Energy and Energy Flux Density of Partially Coherent Electromagnetic Fields

作　　者：李建龙 赵瑞刚 LI Jianlong;ZHAO Ruigang(School of Architectural Engineering,NeiJiang Normal University,NeiJiang,Sichuan 641100,China)

机构地区：[1]内江师范学院建筑工程学院,四川内江641100

出　　处：《内江师范学院学报》2019年第2期67-72,共6页Journal of Neijiang Normal University

基　　金：四川省教育厅资助项目(2018Az2065);内江师范学院博士启动基金资助(0017B01)

摘　　要：推导了部分相干电磁场能量和能流密度的计算表达式,并用部分相干电磁场的电场交叉谱密度矩阵元表示了磁场交叉谱密度元及互交叉谱密度矩阵元,最后以部分相干高斯-谢尔电磁束为例,数值分析了部分相干电磁束远场能量和能流密度的空间分布.The computational expression of partially coherent electromagnetic energy and energy flux density is derived in this paper.And the magnetic cross spectral density element and cross spectral density matrix element are represented by use of the cross spectral density matrix element of the partially coherent electromagnetic field.Finally,taking the partially coherent Gauss Schell electromagnetic beam as an example,the spatial distribution of far-field energy and energy flux density of partially coherent electromagnetic beams is numerically analyzed.

关 键 词：部分相干电磁场 能量和能流密度 计算表达式 

分 类 号：O431.1[机械工程—光学工程]