PT Journal
AU Huang, KCY
   Jun, YC
   Seo, M
   Brongersma, ML
TI Power flow from a dipole emitter near an optical antenna
SO Optics Express
JI Opt. Express
PY 2011
BP 19084
EP 19092
VL 19
IS 20
DE optical antennas
AB Current methods to calculate the emission enhancement of a quantum emitter coupled to an optical antenna of arbitrary geometry rely on analyzing the total Poynting vector power flow out of the emitter or the dyadic Green functions from full-field numerical simulations. Unfortunately, these methods do not provide information regarding the nature of the dominant energy decay pathways. We present a new approach that allows for a rigorous separation, quantification, and visualization of the emitter output power flow captured by an antenna and the subsequent reradiation power flow to the far field. Such analysis reveals unprecedented details of the emitter/antenna coupling mechanisms and thus opens up new design strategies for strongly interacting emitter/antenna systems used in sensing, active plasmonics and metamaterials, and quantum optics.
ER