4:30 PM - 4:45 PM
▲ [18p-211B-7] Kerker effect Germanium metasurface optical absorber at 1.55 um
Keywords:Mie resonance, Lattice resonance, Absorber
In this work, we demonstrate a narrow-band absorber by applying the Kerker effect and amorphous germanium nanoantenna arrays (a-Ge NA arrays) with lattice resonances. The Ge metasurface can generate a high absorptance peak at 1550 nm. Comparing with Ge thin films, the Ge metasurface can get 11-fold increase in absorptance.