Diffractive properties of obstructed vector Laguerre-Gaussian beam under tight focusing condition

Sunil Vyas, Masato Niwa, Yuichi Kozawa, Shunichi Sato

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Diffractive and focusing properties of vector Laguerre-Gaussian beams with obstacle are investigated under tight focusing conditions. Using vector diffraction theory, intensity and polarization distributions near the focus at different orthogonal planes are calculated and analyzed for vector Laguerre-Gaussian beams. It is observed that the beam is able to compensate the distortion produced by obstacles when the size of the obstacle is small. The structural changes in the polarization distribution are not the same in different orthogonal planes. The polarization characteristics of the beam show a significant change when the size of the obstacle is large. A comparative study of the focusing and diffractive properties of vector Laguerre-Gaussian and vector Bessel-Gaussian beams has also been performed.

Original languageEnglish
Pages (from-to)1387-1394
Number of pages8
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume28
Issue number7
DOIs
Publication statusPublished - 2011 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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