High Contrast, Femtosecond Light Polarization Manipulation in Epsilon-near-Zero Material Coupled to a Plasmonic Nanoantenna Array

Kuidong Wang*, Minghao Li, Hui Hsin Hsiao, Fengling Zhang, Marcus Seidel, Ai Yin Liu, Jie Chen, Eloïse Devaux, Cyriaque Genet, Thomas Ebbesen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Ultrafast manipulation of light polarization is crucial in many nonlinear optic and optoelectronic operations. However, most of the configurations are suffering from low modulation speed (gigahertz) or small contrast ratio. Here, by taking advantange of the anisotropic nonlinear response of indium tin oxide at its epsilon-near-zero region and plasmonic nanoantennas at their polarization-sensitive resonance, we achieve a large, ultrafast anisotropic modulation of light. A polarization elliptic rotation of 32.5° at 1.23 μm wavelength, and a phase delay between the oscillations of the linear polarization axes of π/7 within 600 fs response time is demonstrated. This approach constitutes a novel, efficient way to implement all-optical high-speed polarization modulators and retarders.

Original languageEnglish
Pages (from-to)2791-2799
Number of pages9
JournalACS Photonics
Volume8
Issue number9
DOIs
Publication statusPublished - 2021 Sep 15

Keywords

  • anisotropic nonlinearity
  • epsilon-near-zero material
  • femtosecond optical modulation
  • plasmonic nanoantenna array
  • polarization manipulation

ASJC Scopus subject areas

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

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