Intrinsic formation of electromagnetic divergence and rotation by parabolic focusing

Kazunori Shibata; Mayuko Takai; Mitsuharu Uemoto; Shinichi Watanabe

doi:10.1103/PhysRevA.92.053806

Intrinsic formation of electromagnetic divergence and rotation by parabolic focusing

Kazunori Shibata, Mayuko Takai, Mitsuharu Uemoto, Shinichi Watanabe

Department of Physics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A linearly polarized electromagnetic wave is found to form divergent and rotation fields after focused by an off-axis parabolic mirror. These distributions are generated within a subwavelength scale around the focus and at times when the electric field at the focus vanishes. We theoretically and experimentally show that not only the direction but also the structure of the distributions varies with the incident polarization. In addition, the distributions move in one direction with a phase velocity faster than the speed of light.

Original language	English
Article number	053806
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	92
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.92.053806
Publication status	Published - 2015 Nov 3

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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