Emission enhancement in dielectric nanocomposites

Journal
Optics express  
Volume
26
Issue
13
Start Page
16352
End Page
16364
Citation
Opt. Express 13 (26): 16352-16364 (2017-06-25)
Publisher DOI
10.1364/OE.26.016352
Scopus ID
2-s2.0-85049000310
ArXiv ID
1710.06833v2
We consider emitting nanoparticles in dielectric nanocomposites with varying refractive index contrast and geometry. For that we develop a simple and universal method to calculate the emission enhancement in nanocomposites that employs solely the calculation of the effective refractive index and electric field distributions from three quasistatic calculations with orthogonal polarizations. The method is exemplified for dilute nanocomposites without electromagnetic interaction between emitting particles as well as for dense nanocomposites with strong particle interaction. We show that the radiative decay in dielectric nanocomposites is greatly affected by the shape and arrangement of its constituents and give guidelines for larger enhancement.