4.6.15
The Iby and Aladar Fleischman
Faculty of Engineering
You are invited to attend a special department
Seminar and the annual gathering in memory of
Prof. Norman W. Rosenberg
Opening remarks in memory of Prof. Rosenberg will be given by Prof. Mark Shtaif, Chair of the Department of Physical Electronics.
Special Seminar:
Breach of fundamental electrodynamic symmetries in nano-scale optics
Mr. Yarden Mazor
Winner of the Rosenberg Prize for Graduate Students
Abstract:
Reciprocity and symmetry are basic attributes of many physical phenomena involving wave propagation such as sound waves and electromagnetic waves. This fact makes cases where reciprocity is broken interesting from both scientific and practical points of view. Scientifically - unveiling the physical mechanisms involved, and practicallly - using this physical understanding for the design of non-reciprocal components, with the ultimate one being the one-way waveguide. Several designs for 1D and 2D one-way waveguides were recently proposed by our group. All of them are based on using metallic nano-particles in periodic and quasi-periodic arrays and exploiting the magneto-optical effect as a symmetry breaking mechanism. Combining the rotation induced by magnetic fields, and geometrical rotation (or other types of asymmetry) in our systems allows for enhanced non-reciprocity and one-way guiding - which was later extended into sector-way guiding in 2D. These structures offer new ways to control the flow of light in 1D and 2D in the nanoscale and more flexible dispersion engineering which can allow the design of miniature optical isolators, circulators, and other types of optical devices.
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Thursday, June 4th, 2015, at 15:00 p.m.,
Rooms 011, Kitot build, Tel Aviv University Campus, Ramat Aviv
