College of Science

Seminar: Ragip Pala [Caltech]

Novel Metasurfaces for 3D Imaging and Holographic Displays

Feb 16, 2017 11:00 AM to Feb 16, 2017 12:00 PM at Building 8 - Room 241

Advances in lithography and fabrication techniques in the last few decades have enabled us to control the optical properties of materials at the nanoscale, resulting in the emerging field of nanophotonics. An exciting area in this field is the development of metasurfaces, which are planar (2D) structures that enable local control of phase, amplitude and polarization of light. Novel ultrathin optical components based on metasurfaces were recently proposed such as flat lenses, wave plates, and holographic surfaces. However, while metasurfaces hold considerable promise for fundamental advances and novel applications, lack of dynamic tunability and low optical efficiency limit their use in a wide range of applications. In this presentation, I will explore novel approaches for dynamic tuning of the phase and amplitude of metasurface arrays composed of metallic and dielectric nano-antenna. Then, I will describe how to implement the proposed approach in several potential applications such as dynamic holograms, tunable ultrathin lenses, and reconfigurable beam steering devices.

10:50 a.m. Refreshments

11:00 a.m. Seminar

Building 8 - Room 241

For further information, please call (909) 869-4014