Atomically thin optical lenses and gratings.

ABSTRACT: Two-dimensional (2D) materials have emerged as promising candidates for miniaturized optoelectronic devices due to their strong inelastic interactions with light. On the other hand, a miniaturized optical system also requires strong elastic light-matter interactions to control the flow of light. Here we report that a single-layer molybdenum disulfide (MoS₂) has a giant optical path length (OPL), around one order of magnitude larger than that from a single-layer of graphene. Using such giant OPL to engineer the phase front of optical beams we have demonstrated, to the best of our knowledge, the world's thinnest optical lens consisting of a few layers of MoS₂ less than 6.3 nm thick. By taking advantage of the giant elastic scattering efficiency in ultra-thin high-index

SUBMITTER: Yang J 

PROVIDER: S-EPMC6059897 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature