%0 Journal Article
%A Martínez Herrero, Rosario
%A Carnicer, Artur
%A Juvells, Ignasi
%A Sanz Ortiz, Ángel Santiago
%T Uncertainty principle for axial power content of highly focused fields
%D 2020
%@ 1094-4087
%U https://hdl.handle.net/20.500.14352/7534
%X 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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