Dielectric photonic metamaterials

Magnetic resonances can be achieved at visible and near-infrared frequencies in purely dielectric metamaterials via the coupling between pairs of closely spaced, dissimilar dielectric rods. We demonstrate this new phenomenon experimentally and explore how such structures may present giant nonlinear optical, bistable and asymmetric transmission responses driven by resonant optomechanical forces at intensity levels of only a few hundred µW/µm².