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 language | English |
---|---|
Pages (from-to) | 304-309 |
Number of pages | 6 |
Journal | Current Optics and Photonics |
Volume | 7 |
Issue number | 3 |
DOIs | |
State | Published - 2023 |
Keywords
- Effective medium theory
- Lens system design
- Nanostructures
- Subwavelength structures