PHYS 317 |
| We combine plasmonics physics with concepts and tools borrowed from coherent control of molecular dynamics with two goals in mind. One is to introduce new function into nanoplasmonics, including ultrafast elements and broken symmetry elements. The second is to develop coherent nanoscale sources and apply them to coherent control of both molecular dynamics and electric transport in the nanoscale. Several simple elements in what we envision developing into coherently controlled nanoplasmonics are schematically illustrated in Fig. 1. The T-junction of Fig. 1a guides electromagnetic energy traveling down the leg into one or the other of the two symmetry-equivalent arms of the junction. Figure 1b depicts a hybrid construct, which combines elements that provide local enhancement with elements that provide long distance propagation in order to minimize losses. The structural parameters of the construct are optimized using a genetic algorithm. Fig. 1c depicts a plasmonic nanocrystal, developed to separate an incident plane wave into two frequency components and funnel each component in a different direction normal to the direction of incidence. In the talk, we will illustrate also the application of nanoplasmonics to current control, with a view to ultrafast electric switches, and the application of genetic algorithms to develop spatially localized, time-resolved electromagnetic fields with predetermined phase and polarization properties.
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Spectroscopy, Chemistry, and Imaging through Nanophotonics
1:20 PM-5:20 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 340/341, Oral
Division of Physical Chemistry |
