Superradiantly limited linewidth of complementary THz split ring resonators on Si-membranes and surface plasmon polaritons

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Abstract

We study complementary THz metasurfaces with changing lattice constant. On thick substrates the LC-resonance anti-crosses with a surface plasmon polaritons mode. On 10 μm Simembranes, we reveal a superradiantly limited linewidth of the LC-resonance.