离轴矢量光束的紧聚焦特性

Translated title of the contribution: Tightly Focusing Property of Off-axial Vector Beams

Yu Li, Peng Li, Dong Jing Wu, Jian Lin Zhao

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The tightly focusing property of vector beams with off-axial polarization singularities are numerically investigated, according to the Richard-Wolf vector diffraction intergation theory. A method for designing speical focal field is proposed, based on the tightly focusing of vector field with generalized polarization distribution, after analyzing the tightly focusing of radially and azimuthally polarized beams. Moreover, the modulation effect of symmetric broken of off-axial polarization singularites on the focused field, especially the modulation effect on the Spin Angular Momentum (SAM) density, are discussed by analyzing the variation of SAM distributions arising from spin-orbital coupling. The results not only rich the tightly focusing property of vector beam, but also provide reference for improving the distribution of focal field.

Translated title of the contributionTightly Focusing Property of Off-axial Vector Beams
Original languageChinese (Traditional)
Article number0426002
JournalGuangzi Xuebao/Acta Photonica Sinica
Volume49
Issue number4
DOIs
StatePublished - 1 Apr 2020

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