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Uncertainty principle for axial power content of highly focused fields

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In the analysis of the on-axis intensity for a highly focused optical field, it is highly desirable to deal with effective relations aimed at characterizing the field behavior in a rather simple fashion. Here, a novel and adequate measure for the size of the region where the axial power content mainly concentrates is proposed on the basis of an uncertainty principle. Accordingly, a meaningful relationship is provided for both the spread of the incident beam at the entrance of the highly focused optical system and the size of the region where the on-axis power mainly concentrates.

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MARTÍNEZ-HERRERO, Rosario, CARNICER GONZÁLEZ, Arturo, JUVELLS PRADES, Ignacio, SANZ, Ángel s.. Uncertainty principle for axial power content of highly focused fields. _Optics Express_. 2020. Vol. 28, núm. 20, pàgs. 29676-29690. [consulta: 31 de gener de 2026]. ISSN: 1094-4087. [Disponible a: https://hdl.handle.net/2445/173366]

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