19 August 2021 Large-modulation-depth polarization-controlled multiple switching based on magnetic responses in all-dielectric metasurface
Wudeng Wang, Li Xiong, Huizhen Yan
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Abstract

We propose an all-dielectric metasurface with strong polarization sensitivity and large-modulation-depth for potential multiple switching applications. We show that the proposed metasurface can be efficiently tailored through symmetry breaking to support strong toroidal and trapped dipole responses across the near infrared spectrum with high Q-factors. Such two responses can be dynamically switched on and off simultaneously only through changing polarization of incident light, and the direction of toroidal dipole can be rotated 90 deg in two separate frequency regimes. The maximum values of the amplitude modulation depth around responses can almost reach 100% simultaneously, respectively, providing the potential applications in sensing, lasing, switching, and spectral filtering.

© 2021 Society of Photo-Optical Instrumentation Engineers (SPIE) 1934-2608/2021/$28.00 © 2021 SPIE
Wudeng Wang, Li Xiong, and Huizhen Yan "Large-modulation-depth polarization-controlled multiple switching based on magnetic responses in all-dielectric metasurface," Journal of Nanophotonics 15(3), 036004 (19 August 2021). https://doi.org/10.1117/1.JNP.15.036004
Received: 13 April 2021; Accepted: 10 August 2021; Published: 19 August 2021
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KEYWORDS
Switching

Magnetism

Polarization

Optical filters

Dielectric polarization

Metamaterials

Modulation

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