Polarization coupling of vector Bessel-Gaussian beams

Ryushi Takeuchi, Yuichi Kozawa, Shunichi Sato

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We report polarization coupling of radial and azimuthal electric field components of a vector light beam as predicted by the fact that the vector Helmholtz equation is expressed as coupled differential equations in cylindrical coordinates. To clearly observe the polarization variation of a beam as it propagates, higher order transverse modes of a vector Bessel-Gaussian beam were generated by a gain distribution modulation technique, which created a narrow ring-shaped gain region in a Nd:YVO4 crystal. The polarization coupling was confirmed by the observation that the major polarization component of a vector Bessel-Gaussian beam alternates between radial and azimuthal components along with the propagation.

Original languageEnglish
Article number075710
JournalJournal of Optics (United Kingdom)
Volume15
Issue number7
DOIs
Publication statusPublished - 2013 Jul 1

Keywords

  • beam propagation
  • polarization coupling
  • vector beam

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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