Diffraction of an electromagnetic beam by an aperture in a conducting screen

被引:4
|
作者
Dou, WB [1 ]
Yung, EKN
机构
[1] Southeast Univ, Dept Radio Engn, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China
[2] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
关键词
D O I
10.1364/JOSAA.18.000801
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
An electromagnetic beam that is not the solution to the paraxial wave equation but is the solution to Maxwell's equation is simulated directly by the finite-difference time-domain method. Electrical and magnetic field components of the beam are presented graphically. Then the diffraction of the electromagnetic beam pulse by an aperture in a conducting screen is analyzed. The fraction of the beam power through the aperture is defined and calculated. The fields in the time domain near the aperture, which show the dittraction by the aperture, are presented graphically. (C) 2001 Optical Society of America.
引用
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页码:801 / 806
页数:6
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