Exact Solutions of Field Vectors of Diffraction-Free Electromagnetic Waves
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概要
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Diffraction-free beams of light have recently been studied by quite a few authors us-ing the Helmholtz equation. The scalar theory of diffraction, however, is not a goodapproximation when the beam size is comparable to the wavelength. In this paper,Maxwell's equations are solved exactly to obtain the vectorial components of thediffraction-free beam. Solutions for the plane-polarized-electric (or magnetic) waves,and the TE (or TM) modes are given and their relations are discusssed. The exact solu-lion shows that the diffraction-free beam should have longitudinal components of theelectric and / or magnetic fields and that no mode has the exact J. intensity distri bution. Relation to the non-transverse cylindrically symmetric wave with parallel electric and magnetic fields is also found.diffraction-free beam, Maxwell's equations, Bessel beam, electromagnetic wave
- 社団法人日本物理学会の論文
- 1991-02-15
著者
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Shimoda Koichi
Department Of Physicas University Of Tokyo
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Shimoda Koichi
Department Of Physics Keio University
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Shimoda Koichi
Department of Physics,Keio University
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