Federico Capasso (Harvard Univ)

Date: Thu. November 1st, 2018, 4:00 pm-5:00 pm
Location: Rockefeller 301

Flat Optics: from Metalenses to New Polarization Optics and New Routes to Vector Beam Generation 

Arrays of optically thin, sub-wavelength spaced optical elements (meta surfaces) have major potential for wavefront shaping through local control of the phase, amplitude and polarization of light [1]. Flat optics has emerged from this approach [2] with the goals of replacing refractive lenses in most applications requiring aberrations’ correction [3,4] as well as conventional phase plates used in polarization optics [5] and last but not least of providing a new path to the creation of structured light [6]. 

 

[1] N. Yu et al. Science 334, 333 (2011)

[2] N. Yu and F. Capasso, Nature Materials 13,139 (2014)

[3] M. Khorasaninejad et al. Science 352, 1190 (2016)

[4] W-T. Chen et al. Nature Nanotechnology (2018) doi:10.1038/s41565-017-0034-6

[5] J.P.B. Mueller et al. Physical Review Letters 118, 113901 (2017)

[6] R.C. Devlin et al. Science 358, 896 (2017)