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NanoSEC Seminar

Nonlinear Optics at Reduced Dimensions  
Guest Speaker
Prof. Hayk Harutyunyan  
Guest Affiliation
Department of Physics, Emory University  
Guest Affiliation Url  
Yiping Zhao  
Friday, April 10, 2015 4:00 pm - 5:00 pm  
Riverbend Research South Laboratory Auditorium  

When light interacts with low-dimensional systems, new optical new interesting phenomena can arise because of the reduced dimensionality. Classic examples include quantum dots with discrete electronic energy levels or plasmon resonances of metallic nanoparticles. In addition to the dimensionality or shape, the light-matter interaction can be further tuned by using optical nonlinearities. Typically, the induced polarization currents depend linearly on the intensity of the radiation field. However, when the linear relationship breaks down new interesting phenomena arise like frequency conversion or intensity dependent refractive index. We combine this new possibility with the interesting properties of low dimensional systems and use them for applications ranging from subdiffraction resolution imaging to on-chip frequency conversion.