Abstract
In electro-optic (EO) materials, the optical properties change when the materials are placed in an external static or low frequency electric field [1]. When used in metasurfaces, such materials can be used to dynamically control light amplitude, phase, and polarisation. Lithium niobate (LN) is a widely used EO material and it is known for its fast switching speed (tens of GHz) and low power consumption [2]. Recently, it was proposed to use LN in metasurfaces with the aim of creating tunable metasurfaces [3,4]. To date, most woks focused on tuning amplitude and phase of the waves, and in this work we study possibilities of tunable polarisation control using metasurfaces containing LN.
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