Meta-surface based convex reflectors for generating highly directive pencil-beams and fan-beams Gao, Dongxing ; Yang, Rui ; Li, Dong ; Li, Jiacheng ; Lei, Zhenya ; Zhang, Fushun Abstract Publication: Optical Materials Express Pub Date: May 2018 DOI: 10.1364/OME.8.001359 Bibcode: 2018OMExp...8.1359G