Control of Magnetic Dipole Emission with Surface Plasmon Polaritons

TL;DR

This paper explores how surface plasmon polaritons can enhance weak magnetic dipole emissions, combining theoretical analysis with experimental validation using Eu3+ ions on plasmonic surfaces.

Contribution

It provides the first combined theoretical and experimental demonstration of magnetic dipole emission control via surface plasmon polaritons in flat and modulated plasmonic films.

Findings

Enhanced magnetic dipole emission observed at specific angles and polarizations.

Experimental results match theoretical predictions of emission patterns.

Demonstrated control over magnetic dipole transitions using plasmonic structures.

Abstract

The possibility to use surface plasmon polaritons for enhancement of weak magnetic dipole transitions is analyzed theoretically and demonstrated experimentally for simple flat geometry and sine-wave profile modulated plasmonic films. Spontaneous emission of Eu3+ in organic matrices deposited onto plasmonic surfaces demonstrates specific angular and polarization patterns at both electric and magnetic dipole transitions with a well-defined maximum at the plasmon decoupling conditions manifesting the character and magnitude of the effect.