Exact Multipolar Decompositions with Applications in Nanophotonics

被引：98
|
作者：
Alaee, Rasoul [1 ]
Rockstuhl, Carsten [2 ,3 ]
Fernandez-Corbaton, Ivan [3 ]
机构：
[1] Max Planck Inst Sci Light, D-91058 Erlangen, Germany
[2] Karlsruhe Inst Technol, Inst Theoret Festkorperphys, D-76131 Karlsruhe, Germany
[3] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany
来源：
ADVANCED OPTICAL MATERIALS | 2019年 / 7卷 / 01期
关键词：
light-matter interactions; multipole moments; nanophotonics; optical antennas; theory; DIELECTRIC METASURFACES; 2ND-HARMONIC GENERATION; META-OPTICS; NANOANTENNAS; RADIATION; RESONANCE; PHASE; APPROXIMATION; INTERFERENCE; PERMEABILITY;
D O I：
10.1002/adom.201800783
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The multipolar decomposition of electromagnetic sources is an important tool for the study of light-matter interactions in general, and optical materials in particular. Here, a report is given on recent progress in the multipolar decomposition of electromagnetic sources. First, the exact and simple expressions for the multipolar moments of electric current density distributions are reviewed, and then, the results are extended to multipolar moments of magnetization current density distributions due to intrinsic spin. The consideration of both electric and magnetic sources allows to establish the conditions for sources of pure handedness. Scripts are provided that facilitate the computation of multipolar moments of arbitrary order. The work and the included examples of use are placed in the context of nanophotonics and metamaterials, and an outlook for applications in these and other fields is provided.
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页数：14
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