Huygens’ metasurfaces covering from waveplates to perfect absorbers

We have achieved a broadband transparent metasurface useful for full phase control, conversion from linear polarization to any elliptical polarization, and anomalous refraction. Unlike other designs, our structure is made of just one type of metallic particle providing electric and magnetic resonant responses at the same frequency, instead of two types of particles each one providing each type of resonance. The unit cell of our present proposals is formed by a couple of split ring resonators. This is designed to get degeneration for the magnetic and electric resonant modes. All the designed samples are very transparent in a wide range of frequency from 0 to 6 GHz. Besides, we have numerically designed a narrowband perfect absorber with very low reflectance in a wide frequency range.