Mie Plasmons: Modes Volumes, Quality Factors, and Coupling Strengths (Purcell Factor) to a Dipolar Emitter

Figure 1

Extinction efficiency for the dipolar resonance calculated keeping only the dipolar mode (𝑛=1) in the Mie expansion and using experimental value for the metal dielectric constant [28]. (a) Silver particle in air. (b) Gold particle in air. (c) Gold particle in PMMA (optical index 𝑛_𝐵=1.5). The particle radius is 𝑅=25nm for each case. Fit refers to a Lorentzian fit using parameters indicated on the figure.

(a)

(b)

(c)