Twisted longitudinally polarized field in the focal region

Sunil Vyas, Yuichi Kozawa, Shunichi Sato

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We calculate the field distribution based on the vector diffraction theory for a superposition of spirally phase shifted radially polarized beams. Twisted longitudinally polarized field is found in the focal region. The total intensity as well as the polarization components rotates around the beam axis near the focus. Calculation of the Poynting vector at the focal plane shows that the electromagnetic energy is redistributed between different polarization components. Nonzero value of transverse components of the Poynting vector implies the transverse flow of the energy in the focal region.

Original languageEnglish
Pages (from-to)7-14
Number of pages8
JournalApplied Physics B: Lasers and Optics
Issue number1
Publication statusPublished - 2013 Jan

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)


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