Dynamically configurable hybridization of plasmon modes in nanoring dimer arrays

Nanoscale. 2015 Jul 28;7(28):12018-22. doi: 10.1039/c5nr03094c. Epub 2015 Jun 25.

Abstract

We present a novel strategy capable of dynamically configuring the plasmon-induced transparency (PIT) effect with a polarization-dependent controllability based on a nanoring dimer array. The controllable coupling strength between the superradiant and subradiant modes is due to the polarization-dependent field distributions. It is shown that this dynamically controlled PIT is realized with a modulation depth as high as 95%, and a linear dependence of the coupling strength on polarization angle is deduced using a coupled-oscillator model. We believe that our results will inspire further exciting achievements that utilize various polarization states of the electromagnetic wave and pave a way towards applications using PIT with dynamic controllability such as slow light, optical nonlinearities and chemical/bio-sensing.

Publication types

  • Research Support, Non-U.S. Gov't