Evanescent field of vectorial highly non-paraxial beams
In terms of the Fourier spectrum, a simple but general analytical expression is given for the evanescent field associated to a certain kind of non-paraxial exact solutions of the Maxwell equations. This expression enables one to compare the relative weight of the evanescent wave with regard to the p...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/43555 |
| Acesso em linha: | https://hdl.handle.net/2445/43555 |
| Access Level: | acceso abierto |
| Palavra-chave: | Òptica de Fourier Equacions de Maxwell Òptica física Tomografia Difracció Òptica Polarització (Llum) Fourier optics Maxwell equations Physical optics Tomography Diffraction Optics Polarization (Light) |
| Resumo: | In terms of the Fourier spectrum, a simple but general analytical expression is given for the evanescent field associated to a certain kind of non-paraxial exact solutions of the Maxwell equations. This expression enables one to compare the relative weight of the evanescent wave with regard to the propagating field. In addition, in those cases in which the evanescent term is significant, the magnitude of the field components across the transverse profile (including the evanescent features) can be determined. These results are applied to some illustrative examples. |
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