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Título:
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Pulsed light beams in vacuum with superluminal and negative group velocities
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Autores:
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Porras, Miguel A. ;
Gonzalo Fonrodona, Isabel ;
Mondello, Alessia
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2003-06-17
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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We study the group velocity of pulsed light beams in vacuum. Gouy's phase associated with the diffraction of transversally limited pulses can create a strong anomalous dispersion in vacuum leading to highly superluminal and negative group velocities. As a consequence, a focusing pulse can diverge beyond the focus before converging into it. The experimental feasibility is discussed.
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En línea:
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https://eprints.ucm.es/id/eprint/29892/1/Gonzalo%2CI%2008%20LIBRE.pdf
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