Broadband enhancement of spontaneous emission in a photonic-plasmonic structure

Abstract

We demonstrate that a broadband enhancement of spontaneous emission can be achieved within a photonicplasmonic structure. The structure can strongly modify the spontaneous emission by exciting plasmonic modes. Because of the excited plasmonic modes, an enhancement up to 30 times is observed, leading to a 4 times broader emission spectrum. The reflectance measurement and the finite-difference time-domain simulation are carried out to support these results. © 2012 Optical Society of America.