Electromagnetic energy in multilayered spherical particles
arXiv:1905.02057 · doi:10.1364/JOSAA.36.001591
Abstract
We obtain exact analytic expressions for (i) the electromagnetic energy radial density within and outside a multilayered sphere and (ii) the total electromagnetic energy stored within its core and each of its shells. Explicit expressions for the special cases of lossless core and shell are also provided. The general solution is based on compact recursive transfer-matrix method and its validity includes also magnetic media. The theory is illustrated on the examples of electric field enhancement within various metallo-dielectric silica-gold multilayered spheres. User-friendly MATLAB code which includes the theoretical treatment, is available as a supplement to the paper.
arXiv comment11 pages, 2 figures
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- Large fluorescence enhancement via lossless all-dielectric spherical mesocavities
- Generation of nearly pure and highly directional magnetic light in fluorescence of rare earth ions
- Is there a proper figure of merit for a plasmonic structure involved in metal-enhanced fluorescence?