Coherent, nonlinear, and active nanoplasmonics

This paper is devoted to the latest developments in nanoplasmonics, i.e., physics of optical fields localized at the nanoscale whose spatio-temporal dynamics is mediated by surface plasmon polaritons (SPPs) and surface plasmons (SPs). While the free-propagating and guided electromagnetic waves cannot be localized to a region significantly smaller than the wavelength, the plasmonic waves can and do nanolocalize. We consider both the fundamentals, including some examples and illustrations, of the plasmonic energy nanolocalization, and their possible applications.