Open Access
1 October 2020 Reversible switching of electromagnetically induced transparency in phase change metasurfaces
Libang Mao, Yang Li, Guixin Li, Shuang Zhang, Tun Cao
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Abstract

Metasurface analogue of the phenomenon of electromagnetically induced transparency (EIT) that is originally observed in atomic gases offers diverse applications for new photonic components such as nonlinear optical units, slow-light devices, and biosensors. The development of functional integrated photonic devices requires an active control of EIT in metasurfaces. We demonstrate a reversible switching of the metasurface-induced transparency in the near-infrared region by incorporating a nonvolatile phase change material, Ge2Sb2Te5, into the metasurface design. This leads to an ultrafast reconfigurable transparency window under an excitation of a nanosecond pulsed laser. The measurement agrees well with both theoretical calculation and finite-difference time-domain numerical simulation. Our work paves the way for dynamic metasurface devices such as reconfigurable slow light and biosensing.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
Libang Mao, Yang Li, Guixin Li, Shuang Zhang, and Tun Cao "Reversible switching of electromagnetically induced transparency in phase change metasurfaces," Advanced Photonics 2(5), 056004 (1 October 2020). https://doi.org/10.1117/1.AP.2.5.056004
Received: 22 May 2020; Accepted: 7 September 2020; Published: 1 October 2020
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CITATIONS
Cited by 37 scholarly publications.
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KEYWORDS
Chromium

Switching

Transmittance

Transparency

Gold

Near infrared

Refractive index

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