Generation of optical vortex by plasmonic metalens for beam shaping

C. H. Wei, C. K. Chang

Research output: Contribution to journalConference articlepeer-review

Abstract

New metalens which consist of two concentric elliptical nanohole arrays in silver film are proposed to generate an optical vortex for beam shaping by incident light with circular polarization. The generated optical filed from metalens can be altered by the rotation of elliptical nanohole. The metalens will generate a tiny spot with a favorable depth of focus as the major axis of elliptical nanohole in the inner concentric array is perpendicular to the major axis of elliptical nanohole in the outer concentric array.

Original languageEnglish
Pages (from-to)920-921
Number of pages2
JournalInternational Conference on Metamaterials, Photonic Crystals and Plasmonics
Publication statusPublished - 2022
Event12th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2022 - Torremolinos, Spain
Duration: 2022 Jul 192022 Jul 22

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Materials Science (miscellaneous)
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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