Vacuum ultraviolet nonlinear metalens

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Ming Lun Tseng
  • Michael Semmlinger
  • Ming Zhang
  • Catherine Arndt
  • Tzu-Ting Huang
  • Jian Yang
  • Hsin Yu Kuo
  • Vin-Cent Su
  • Cheng Hung Chu
  • Benjamin Cerjan
  • Peter Nordlander
  • Naomi J. Halas

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article numbereabn5644
Journal / PublicationScience Advances
Volume8
Issue number16
Online published20 Apr 2022
Publication statusPublished - 22 Apr 2022

Link(s)

Abstract

Vacuum ultraviolet (VUV) light plays an essential role across science and technology, from molecular spectroscopy to nanolithography and biomedical procedures. Realizing nanoscale devices for VUV light generation and control is critical for next-generation VUV sources and systems, but the scarcity of low-loss VUV materials creates a substantial challenge. We demonstrate a metalens that both generates-by second-harmonic generation-and simultaneously focuses the generated VUV light. The metalens consists of 150-nm-thick zinc oxide (ZnO) nanoresonators that convert 394 nm (similar to 3.15 eV) light into focused 197-nm (similar to 6.29 eV) radiation, producing a spot 1.7 tm in diameter with a 21-fold power density enhancement as compared to the wavefront at the metalens surface. The reported metalens is ultracompact and phase-matching free, allowing substantial streamlining of VUV system design and facilitating more advanced applications. This work provides a useful platform for developing low-loss VUV components and increasing the accessibility of the VUV regime.

Research Area(s)

  • GENERATION, OPTICS, METASURFACES

Citation Format(s)

Vacuum ultraviolet nonlinear metalens. / Tseng, Ming Lun; Semmlinger, Michael; Zhang, Ming; Arndt, Catherine; Huang, Tzu-Ting; Yang, Jian; Kuo, Hsin Yu; Su, Vin-Cent; Chen, Mu Ku; Chu, Cheng Hung; Cerjan, Benjamin; Tsai, Din Ping; Nordlander, Peter; Halas, Naomi J.

In: Science Advances, Vol. 8, No. 16, eabn5644, 22.04.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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