On the evanescent fields and the causality of the focus wave modes

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dc.contributorVirginia Techen
dc.contributor.authorShaarawi, Amr M.en
dc.contributor.authorZiolkowski, R. W.en
dc.contributor.authorBesieris, Ioannis M.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessed2014-03-20en
dc.date.accessioned2014-04-09T18:12:24Zen
dc.date.available2014-04-09T18:12:24Zen
dc.date.issued1995-08-01en
dc.description.abstractThe diverging and converging field components of the source-free focus wave modes are studied within the framework of both the Whittaker and Weyl plane wave expansions, It is shown that, in the Weyl picture, the evanescent fields associated with the diverging and converging components of the focus wave mode solution cancel each other identically, The source-free focus wave modes are, hence, composed solely of backward and forward propagating components of the Whittaker type, It will also be shown that no evanescent fields are associated with the causal excitation of an aperture by an initial focus wave mode field. The diverging field, however, is composed solely of causal components that propagate away from the aperture. With a specific choice of parameters, the field generated by the aperture is a very good approximation to the source-free solution. Under the same conditions, the original focus wave mode solution is composed predominantly of causal forward propagating fields. (C) 1995 American Institute of Physics.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationShaarawi, A. M.; Ziolkowski, R. W.; Besieris, I. M., "On the evanescent fields and the causality of the focus wave modes," J. Math. Phys. 36, 5565 (1995); http://dx.doi.org/10.1063/1.531277en
dc.identifier.doihttps://doi.org/10.1063/1.531277en
dc.identifier.issn0022-2488en
dc.identifier.urihttp://hdl.handle.net/10919/47070en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jmp/36/10/10.1063/1.531277en
dc.language.isoenen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectEquationsen
dc.subjectTransmissionen
dc.subjectEnergyen
dc.titleOn the evanescent fields and the causality of the focus wave modesen
dc.title.serialJournal of Mathematical Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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