Reconfigurable terahertz quarter-wave plate for helicity switching based on Babinet inversion of anisotropic checkerboard metasurface

Abstract

Dynamic helicity switching by utilizing metasurfaces is challenging because it requires deep modulation of polarization states. To realize such helicity switching, this paper proposes a dynamic metasurface functioning as a switchable quarter-wave plate, the fast axis of which can be dynamically rotated by $90^{\circ }$. The device is based on the critical transition of an anisotropic metallic checkerboard, which realizes the deep modulation and simultaneous design of the switchable states. After verifying the functionality of the ideally designed device in a simulation, we tune its structural parameters to realize practical experiments in the terahertz frequency range. By evaluating the fabricated sample with vanadium dioxide, the conductivity of which can be controlled by temperature, its dynamic helicity switching function is demonstrated.

arXiv comment6 pages 4 figures

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Cited by in corpus (5)

• Dynamic quarter-wave metasurface for efficient helicity inversion of polarization beyond the single-layer conversion limit
• Broadband operation of active terahertz quarter-wave plate achieved with vanadium-dioxide-based metasurface switchable by current injection
• Broadband switchable terahertz half-/quarter-wave plate based on a graphene-metal hybrid metasurface
• Departure from Babinet principle in metasurfaces supported by subwavelength dielectric slabs
• Extension of Babinet's relations to reflective metasurfaces: Application to the simultaneous control of wavefront and polarization