Intrinsic formation of electromagnetic divergence and rotation by parabolic focusing

Kazunori Shibata, Mayuko Takai, Mitsuharu Uemoto, Shinichi Watanabe

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


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 languageEnglish
Article number053806
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
Publication statusPublished - 2015 Nov 3

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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