Exploiting Topological Properties of Mie-Resonance-Based Hybrid Metasurfaces for Ultrafast Switching of Light Polarization

The Mie resonances of high-index nanostructures offer the possibility of manipulating light with extremely low loss. Enhanced optical magnetism, with a concomitant significant increase in the quality factor, can be achieved in high-index metasurfaces by adding a highly reflective backplane to the system. Here, we show that Mie-resonance-based hybrid metasurfaces consisting of an array of amorphous silicon nanodisks on a gold backplane can be used to manipulate light polarization upon reflection. Reflection matrix analysis reveals the nontrivial topological property associated with the Mie resonance of individual nanodisks. The topologically protected polarization conversion effect allows the generation of abundant and diverse polarization in the reflected waves by varying the incident wavevector. By presenting proof-of-concept demonstrations based on nonlinear modeling, we further show that the considered hybrid metasurfaces can serve as a platform for ultrafast all-optical polarization switching of near-infrared light. The topological nature of the metasurfaces' response offers great flexibility in polarization generation and dynamic modulation.

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Work Title Exploiting Topological Properties of Mie-Resonance-Based Hybrid Metasurfaces for Ultrafast Switching of Light Polarization
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Open Access
Creators
  1. Yuhao Wu
  2. Lei Kang
  3. Huaguang Bao
  4. Douglas H. Werner
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. ACS Photonics
Publication Date September 16, 2020
Publisher Identifier (DOI)
  1. https://doi.org/10.1021/acsphotonics.0c00858
Deposited November 15, 2021

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  • Created
  • Added 2020_Wu_ACS_Photonics_7__2362__2020_.pdf
  • Added Creator Yuhao Wu
  • Added Creator Lei Kang
  • Added Creator Huaguang Bao
  • Added Creator Douglas H. Werner
  • Published
  • Updated
  • Updated