Sending report ...NCN Nanophotonics: Research Seminars
Routing Light with Nematicons: Light Localization and Steering in Liquid Crystals
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- Podcast (audio) What's this? (MP3, 22.77 Mb)
| Contributor(s) | Gaetano Assanto University of Rome |
|---|---|
| Abstract | Nematic liquid crystals support optical spatial solitons via light-induced molecular reorientation. Such all-optical waveguides can channel a signal towards a destination, hence permitting signal routing. Owing to the inherent anisotropy of nematic liquid crystals, molecular orientation and birefringent walk-off can be electro-optically adjusted, leading to voltage-tunable steering and signal readdressing. Combined with the presence of a dielectric interface, this voltage-control can be exploited for refraction as well as total intenal reflection of spatial solitons, reaching unprecedented angular deviations of as much as 40°. |
| Biography | Gaetano Assanto received his MSc in Electrical Engineering in 1981 and his PhD in Electrical and Computer Engineering in 1987. Since November 1992, he has been a professor of Optoelectronics with the Department of Electronic Engineering of the University of Rome "Roma Tre". His current interests are in nonlinear effects (parametric, Kerr-like, reorientational, thermo-optic) for all-optical signal processing and light localization, as well as Si-Ge heterostructures and optoelectronics for near-infrared photodetection. Dr. Assanto is a Fellow of the Optical Society of America (OSA) and senior member of the IEEE Lasers and Electro-Optics Society (IEEE-LEOS). He is a topical editor for the Journal of the Optical Society of America B and the chairman of the IEEE-LEOS Technical Committee in Nonlinear Optics. |
| Sponsored by | The Birk Nanotechnology Center The Bindley Bioscience Center Purdue Discovery Park The NASA Institute for Nanoelectronics and Computing The Network for Computational Nanotechnology VEECO NCN Student Leadership Council Department of Chemistry Department of Physics School of Chemical Engineering School of Electrical and Computer Engineering School of Mechanical Engineering |
| Cite this work | If you reference this work in a publication, please cite as follows: |
| Date posted | 10 Oct, 2007 |
| Time | 10:30 AM, September 10, 2007 |
| Location | Birck Nanotechnology Building, Room 1001 |
| Type | Online Presentations |
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