Photonics Seminar: Maria Timofeeva
- Nanowires and nano-oxides as building blocks for nonlinear photonics
- Maria Timofeeva, Optical Nanomaterials Group, Institute for Quantum Electronics, Department of Physics, ETH Zurich
- Abstract:Nonlinear nanophotonics is a rapidly growing research area with many potential applications for the design of nanoantennas, metamaterials, nanolasers, light sources and flexible photonic devices. Nanophotonics is usually associated with metallic nanoparticles and nanostructures due to their optoelectronic and plasmonic properties. Despite the success of such structures, plasmonics suffer from ohmic losses at optical frequencies, heating and incompatibility with complementary metal oxide semiconductor (CMOS) fabrication processes. Recent research demonstrated a high potential for the manipulation of light at the nanoscale using optically induced Mie resonances in dielectric and semiconductor materials and oxides materials with high refractive indexes as an alternative to metallic nanostructures.I will show the last results in experimental characterization of III-V nanoantennas, fabricated from nanowires, as well as dimer structures as a combination of plasmonic and nano-oxide particles. Also, I will show a powerful method of nanoantennas fabrication using focused ion beam slicing as alternative to the common lithography and etching processes.
-  M. Timofeeva, A. Bouravleuv, G. Cirlin et all, Polar Second-Harmonic Imaging to Resolve Pure and Mixed Crystal Phases along GaAs Nanowires, Nano Lett., 2016, 16 (10), pp 6290–6297.
-  M. Timofeeva, L. Lang, F. Timpu et all, Anapoles in Free-Standing III–V Nanodisks Enhancing Second-Harmonic Generation, Nano Lett., 2018, 18 (6), pp 3695–3702.
August 27, 2018
1:00 PM — 2:00 PM
Advanced Science Research Center, GC/CUNY
85 St. Nicholas Terrace
5th Floor Data Visualization Room