Input Impedance, Nanocircuit Loading, and Radiation Tuning of Optical Nanoantennas
Input Impedance, Nanocircuit Loading, and Radiation Tuning of Optical Nanoantennas
Here we explore the radiation features of optical nanoantennas, analyzing the concepts of optical input impedance, optical radiation resistance, impedance matching, and loading of plasmonic nanodipoles. We discuss how the concept of antenna impedance may be applied to optical frequencies and how its quantity may be properly defined and evaluated. …