9 November 2012
COBRA COLLOQUIUM: Friday November 9, 2012 at 15:00 – 16:00 in the Film Theater of Grand Café and Film house De Zwarte Doos
Speaker: Prof. Dr. Albert Polman
Title: Plasmonic metamaterials
Abstract: Optical metamaterials are materials with optical properties that are determined by their subwavelength structure rather than just their chemical composition. Here, we introduce optical metamaterials composed of ultrathin layers of metal and a dielectric. We will first describe the propagation of light along planar metal-insulator-metal (MIM) waveguides, in which the dispersion can be tuned by controlling the coupling between surface plasmon polariton modes on either side of the waveguide. Such waveguides can have a mode index that is negative (n<0). The special case of n=0 is also demonstrated. Next, we will describe the optical properties of three-dimensional layers of coupled MIM waveguides. When property designed this material has a negative refractive index in the UV as we will demonstrate. Finally, we introduce the new concept of plasmonic optomechanics: a plasmonic MIM nanomechanical cavity is presented that serves as a highly sensitive on-chip displacement sensor, with picometer resolution.
Biography: Albert Polman obtained his Ph.D. from the University of Utrecht, the Netherlands, in 1989. He was a post-doctoral researcher at AT&T Bell Laboratories until 1991 and then became group leader at the FOM Institute AMOLF in Amsterdam, the Netherlands. In 2003 he spent a sabbatical year at CALTECH. Since 2006 he also serves as director of AMOLF. Polman's research focuses on nanophotonics: the control, understanding and application of light using at the nanoscale, with special emphasis on light management in solar cells and optical metamaterials. Polman is member of the Royal Netherlands Academy of Arts and Sciences, Fellow of the Materials Research Society (USA), recipient of an ERC Advanced Investigator Grant and winner of the ENI Renewable Energy Prize (2012).
After the colloquium (around 16:00) we organize a mini-colloquium in which three COBRA researchers, one from each of the three COBRA groups, will give a short presentation about his or her work.
For the Photonics and Semiconductor Nanophysics Group:
Speaker: Saedeeh Jahanmiri Nejad Title: Superconducting photon-number-resolving detectors
For the Electro Optical Communication Group:
Speaker: Vlado Menkovski Title: The QoE Loop – optimizing the user experience
For the Photonic Integration Group:
Speaker: Jing Zhao Title: Monolithically Integrated Filtered-feedback Multi-wavelength Laser
The audience is invited to an informal gathering following the colloquium in the lounge of Grand Café and Film house De Zwarte Doos.
The next COBRA Colloquium will take place on Friday, December 14, 2012
Location: TU/e, the Film Theater of Grand Café and Film house De Zwarte Doos
Time: 15:00 hours