Investigation of the center intensity of first- and second-order Laguerre-Gaussian beams with linear and circular polarization

Yoshinori Iketaki, Takeshi Watanabe, Nándor Bokor, Masaaki Fujii

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The vectorial Debye integral shows that tightly focused Laguerre-Gaussian (LG) beams have a residual intensity at the focal point for linear polarization, for a topological charge of m = l and 2. We measured the shapes of linearly and circularly polarized LG beams and found that a central intensity appeared at m = l and 2 for linear and right-handed circular polarization, however, it is completely canceled for left-handed circular polarization. In general, when the orbital angular momentum of the LG beam is parallel to the spin angular momentum of the photons, zero intensity is always achieved at the focus.

Original languageEnglish
Pages (from-to)2357-2359
Number of pages3
JournalOptics Letters
Volume32
Issue number16
DOIs
Publication statusPublished - Aug 15 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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