NANO.BSU.BY

Institutional research of nanoelectromagnetics

Gregory SLEPYAN

Institute for Nuclear Problems, Belarus State University, Belarus
Concept of photonic density of states in nanoelectromagnetics: theory and applications

Concept of photonic density of states in nanoelectromagnetics: theory and applications During the last years the concept of photonic density of states (DOS) has attracted much attention as a basis building block for modern nanooptics and nanophotonics. The field started with the prediction of the spontaneous emission rate enhancement in microcavities (Parcell effect,1946). Various systems used for photonic DOS tuning are discussed, including microcavities, photonic crystals, graphene ribbons, nanoantennas based on carbon nanotubes and plasmon guiding nanowires. This lecture provides a common theoretical frame for electrodynamics of this structures, describes basis numerical techniques for photonic DOS calculation and their different applications. The two types of physical processes which are most important for nanophotonics are discussed in terms of photonic DOS: spontaneous decay of the excited quantum state and thermal light emission. This lecture concludes with an outlook on the future of photonic DOS concept applications to the theory of noise properties of nanoscale circuit elements, interconnectors and nanoantennas.