Nonlinear wavefront engineering with metasurface decorated quartz crystal

Ningbin Mao, Yutao Tang, Mingke Jin, Guanqing Zhang, Yang Li, Xuecai Zhang, Zixian Hu, Wenhao Tang, Yu Chen, Xuan Liu, Kingfai Li, Kokwai Cheah, Guixin Li*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In linear optical processes, compact and effective wavefront shaping techniques have been developed with the artificially engineered materials and devices in the past decades. Recently, wavefront shaping of light at newly generated frequencies was also demonstrated using nonlinear photonic crystals and metasurfaces. However, the nonlinear wave-shaping devices with both high nonlinear optical efficiency and high wave shaping efficiency are difficult to realize. To circumvent this constraint, we propose the idea of metasurface decorated optical crystal to take the best aspects of both traditional nonlinear crystals and photonic metasurfaces. In the proof-of-concept experiment, we show that a silicon nitride metasurface decorated quartz crystal can be used for the wavefront shaping of the second harmonic waves generated in quartz. With this crystal-metasurface hybrid platform, the nonlinear vortex beam generation and nonlinear holography were successfully demonstrated. The proposed methodology may have important applications in nonlinear structured light generation, super-resolution imaging, and optical information processing, etc.

Original languageEnglish
Pages (from-to)797-803
Number of pages7
JournalNanophotonics
Volume11
Issue number4
Early online date2 Nov 2021
DOIs
Publication statusPublished - Jan 2022

Scopus Subject Areas

  • Biotechnology
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

User-Defined Keywords

  • Metasurface
  • nonlinear wavefront engineering
  • optical holography
  • orbital angular momentum

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