Magneto-optical rotation of surface plasmon polaritons

Abstract

We investigate magneto-optical rotation (MOR) of surface plasmon polaritons (SPPs) at the interface of a metal and a four-level atomic system. The MOR of SPPs can be controlled and modified with the intensity and frequency of the applied fields. We show the birefringence enhancement of the weak probe fields propagating through the atomic medium in the presence of the static magnetic field. The external magnetic field has a vital role in the generation and control over the MOR of SPPs. The MOR completely stops when either the external magnetic field or the probe field or both are tuned to resonance. A pretty behavior of MOR of SPPs is observed for a specific set of control field frequency. The enhanced MOR of SPP has significant applications in atomic spectroscopy, optical communication, nano-photonics, optical switches, and precise measurement.

Surface plasmon polaritons at an interface between silver and quantum dots hybrid nanocomposite

“…Silver (Ag) nano-particles (NPs) have sizes ranging from 1nm to 100 nm. The concept of diffused silver NPs in silver/nitride thin films results in the excitation of surface plasmon resonance, which is responsible for the optical absorption [23]. The presence of localized plasmons of silver/gold nanocomposite has attracted a lot of attention due to their high dispersive properties that could manipulate SPPs at the interface [24].…”