Amit Agrawal A. Agrawal, W. Zhu, C. Zhang, L. Chen, S. Divitt and H. J. Lezec(*), National Institute of Standards and Technology, (*)University of Maryland
We discuss the ability of dielectric metasurfaces – flat optical elements composed of an array of deep-subwavelength nanostructures of nanoscale thicknesses – to arbitrarily shape instead the temporal and spatial evolution of optical fields.