Continuous-phase Lens Design via Binary Dielectric Annular Nanoslits

Woongbu Na, Seung Yeol Lee, Hyuntai Kim

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, a binary dielectric annular nanoring lens is proposed to cover the full range of optical phase. The lens is designed numerically, based on the effective-medium theory. The performance of the proposed lens is verified for the cases of single-focal and dual-focal lenses. The efficiency of a single-focal lens is improved by 17.19% compared to a binary dielectric lens, and that of a dual-focal lens shows enhancements of 13.11% and 49.41% at the two focal points. This lens design can be applied to other optical components with axially symmetric structures.

Original languageEnglish
Pages (from-to)304-309
Number of pages6
JournalCurrent Optics and Photonics
Volume7
Issue number3
DOIs
StatePublished - 2023

Keywords

  • Effective medium theory
  • Lens system design
  • Nanostructures
  • Subwavelength structures

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