Electromagnetic multipole theory for optical nanomaterials
Optical properties of natural or designed materials are determined by the electromagnetic multipole moments that light can excite in the constituent particles. In this paper, we present an approach to calculating the multipole excitations in arbitrary arrays of nanoscatterers in a dielectric host me...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2012-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/14/9/093033 |
| _version_ | 1797751819221336064 |
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| author | P Grahn A Shevchenko M Kaivola |
| author_facet | P Grahn A Shevchenko M Kaivola |
| author_sort | P Grahn |
| collection | DOAJ |
| description | Optical properties of natural or designed materials are determined by the electromagnetic multipole moments that light can excite in the constituent particles. In this paper, we present an approach to calculating the multipole excitations in arbitrary arrays of nanoscatterers in a dielectric host medium. We introduce a simple and illustrative multipole decomposition of the electric currents excited in the scatterers and connect this decomposition to the classical multipole expansion of the scattered field. In particular, we find that completely different multipoles can produce identical scattered fields. The presented multipole theory can be used as a basis for the design and characterization of optical nanomaterials. |
| first_indexed | 2024-03-12T16:54:07Z |
| format | Article |
| id | doaj.art-e6f11f243a5440258f790863540fc1ce |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:54:07Z |
| publishDate | 2012-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-e6f11f243a5440258f790863540fc1ce2023-08-08T11:02:40ZengIOP PublishingNew Journal of Physics1367-26302012-01-0114909303310.1088/1367-2630/14/9/093033Electromagnetic multipole theory for optical nanomaterialsP Grahn0A Shevchenko1M Kaivola2Department of Applied Physics, Aalto University , PO Box 13500, FI-00076 Aalto, FinlandDepartment of Applied Physics, Aalto University , PO Box 13500, FI-00076 Aalto, FinlandDepartment of Applied Physics, Aalto University , PO Box 13500, FI-00076 Aalto, FinlandOptical properties of natural or designed materials are determined by the electromagnetic multipole moments that light can excite in the constituent particles. In this paper, we present an approach to calculating the multipole excitations in arbitrary arrays of nanoscatterers in a dielectric host medium. We introduce a simple and illustrative multipole decomposition of the electric currents excited in the scatterers and connect this decomposition to the classical multipole expansion of the scattered field. In particular, we find that completely different multipoles can produce identical scattered fields. The presented multipole theory can be used as a basis for the design and characterization of optical nanomaterials.https://doi.org/10.1088/1367-2630/14/9/093033 |
| spellingShingle | P Grahn A Shevchenko M Kaivola Electromagnetic multipole theory for optical nanomaterials New Journal of Physics |
| title | Electromagnetic multipole theory for optical nanomaterials |
| title_full | Electromagnetic multipole theory for optical nanomaterials |
| title_fullStr | Electromagnetic multipole theory for optical nanomaterials |
| title_full_unstemmed | Electromagnetic multipole theory for optical nanomaterials |
| title_short | Electromagnetic multipole theory for optical nanomaterials |
| title_sort | electromagnetic multipole theory for optical nanomaterials |
| url | https://doi.org/10.1088/1367-2630/14/9/093033 |
| work_keys_str_mv | AT pgrahn electromagneticmultipoletheoryforopticalnanomaterials AT ashevchenko electromagneticmultipoletheoryforopticalnanomaterials AT mkaivola electromagneticmultipoletheoryforopticalnanomaterials |