19 October 2004 Delivering energy to nanoscale: rapid adiabatic transformation, concentration, and stopping of radiation in nano-optics
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Abstract
In nanooptics, we theoretically predict a possibility with high efficiency to deliver electromagnetic energy to and concentrate it on the nanoscale. It is achieved by converting light waves to surface plasmon polaritons (SPP's) and slowly (adiabatically) varying in space dielectric (semiconductor) environment of a metal surface to gradually slow down and completely stop SPP's, converting them to surface plasmons localized on the nanoscale. Though adiabatic, this transformation should be as rapid as possible to minimize the absorption losses in the metal. Another way is to launch SPP's to propagate toward the tip of a tapered plasmonic waveguide. The SPP's are slowed down and asymptotically stopped when they tend to the tip, never actually reaching it (the travel time to the tip is logarithmically divergent). The rapid adiabatic stopping of SPP's causes accumulation of energy and giant local fields at the stopping point. There are multiple applications possible of these phenomena in nanooptics, nanoprobing, and nanomodification.
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Mark I. Stockman, Mark I. Stockman, } "Delivering energy to nanoscale: rapid adiabatic transformation, concentration, and stopping of radiation in nano-optics", Proc. SPIE 5512, Plasmonics: Metallic Nanostructures and Their Optical Properties II, (19 October 2004); doi: 10.1117/12.562685; https://doi.org/10.1117/12.562685
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