3D (passive) and 2D (active) Metamaterials at Infrared Optical Frequencies

TYPESpecial Seminar In Electro-Optics, Electrical Engineering,Technion
Speaker:Dr. Igal Brener
Affiliation:Sandia National Labs and Center for Integrated Nanotechnologies, Albuguerque, New Mexico, USA
Organizer:Prof. Meir Orenstein, Electrical Engineering, Technion
Date:09.09.2012
Time:13:30
Location:
Abstract:Metamaterials (MM) provide for new ways of manipulating light and achieving complex functionality due to the ability to control the spatial distribution of the electromagnetic permittivity and permeability. This full functionality usually requires complex 3D assemblies of subwavelength resonators that are very difficult to implement at optical frequencies. In this talk I will give an overview of our activities related to 3D metamaterials in the infrared. We recently developed a new fabrication technique called Membrane Projection Lithography (MPL) that enables the fabrication of out-of-plane metamaterial resonators of submicron dimensions. We have used this technique to fabricate metamaterial structures resonant in the infrared, on a variety of out of plane surfaces. In addition to this MPL technique, we also have developed an approach for infrared metamaterials based on dielectric resonators that avoids the use of metallic resonators and their associated ohmic loss. In the second half of the talk, I will present recent results on the strong coupling between Metamaterials and other dipolar excitations, such as phonons, free carriers and intersubband transitions. Some of these effects can be further exploited for active control of Metamaterials and thus provide a platform for new photonic devices in the infrared.