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Título: | Momentum paradox in a vortex core |
Autor: | Zambrini, Roberta CSIC ORCID ; Thomson, Laura C.; Barnett, Stephen M.; Padgett, Miles | Palabras clave: | Orbital beams Angular momentum Optical vortex Bessel beams Propagation Field evanescent components |
Fecha de publicación: | 20-may-2005 | Editor: | Taylor & Francis | Citación: | Journal of Modern Optics 52(8): 1135-1144 (2005) | Resumen: | The identification of angular momentum lh per photon with optical vortices of charge l appears to require that the field amplitude be zero within a finite distance of the vortex. This, however, is not compatible with the known form of beams such as the Laguerre Gaussian and Bessel beams. We resolve this paradox by analysing the propagation of a Bessel beam through a small circular aperture, showing that the resulting field has evanescent components. | Descripción: | 10 pages, 5 figures. | Versión del editor: | http://dx.doi.org/10.1080/09500340412331326383 | URI: | http://hdl.handle.net/10261/7457 | DOI: | 10.1080/09500340412331326383 | ISSN: | 0950-0340 | E-ISSN: | 1362–3044 |
Aparece en las colecciones: | (IFISC) Artículos |
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paperJMO.pdf | 167,16 kB | Adobe PDF | Visualizar/Abrir |
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