Focusing zone plate based on subwavelength grating

S.S. Stafeev*, A.G. Nalimov, M.V. Kotlyar, D. Gibson, S. Song, C. Hu, L. O'Faolain, V.V. Kotlyar

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We designed, fabricated, and characterized a thin metalens that is capable of simultaneously manipulating the state of polarization and phase of incident light. The lens was manufactured in an amorphous silicon film of diameter 30 μm and has focal length of 633 nm. The lens converts a linearly polarized beam with wavelength of 633 nm into radially polarized light and produces a subwavelength focus whose size at full-width half-maximum intensity is 0.49λ and 0.55λ (λ is incident wavelength). The experimental results are in good agreement with the numerical simulation, with the simulated focal spot measuring 0.46λ and 0.52λ.

Original languageEnglish
Title of host publication2017 19th International Conference on Transparent Optical Networks (ICTON)
Place of PublicationPiscataway, NJ
PublisherIEEE Computer Society Press
Number of pages4
ISBN (Electronic)9781538608586, 9781538608583
DOIs
Publication statusPublished - 4 Sep 2017
Event19th International Conference on Transparent Optical Networks, ICTON 2017 - Girona, Catalonia, Spain
Duration: 2 Jul 20176 Jul 2017

Publication series

NameInternational Conference on Transparent Optical Networks
ISSN (Electronic)2161-2064

Conference

Conference19th International Conference on Transparent Optical Networks, ICTON 2017
Country/TerritorySpain
CityGirona, Catalonia
Period2/07/176/07/17

Keywords

  • metasurface
  • polarization
  • SNOM
  • zone plate

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