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Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
- Authors
- Kim, Hyuntai; Rogers, Edward T. F.
- Issue Date
- 28-Jan-2020
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- SCIENTIFIC REPORTS, v.10, no.1
- Journal Title
- SCIENTIFIC REPORTS
- Volume
- 10
- Number
- 1
- ISSN
- 2045-2322
- Abstract
- A binary metallic superoscillatory lens assisted with annular subwavelength slits is proposed, which generates a longitudinally-polarized super-resolution focal point. The annular slits are designed to selectively transmit radially-polarized light. Simulations using the finite element method show a 0.24 lambda focal spot with 21.8 dB of polarization purity and only 0.342 dB reduction in efficiency compared to a standard superoscillatory lens.
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Related Researcher
- Kim, Hyun tai
- Science & Technology (Department of Electronic & Electrical Convergence Engineering)