Role of Magnetic Induction Currents in Nanoslit Excitation of Surface Plasmon Polaritons
Abstract
We present a method for exciting surface plasmon polaritons (SPPs) caused by a magnetic field component perpendicular to the direction of slit. The excitation mechanism is based on the spatially oscillating induced current along the edges of the slit under obliquely incident electromagnetic waves. Our finding distinguishes itself from previous mechanisms based on transverse electric fields and unveils the missing point of the SPP-excitation problem in a nanoslit. The use of a magnetic field for SPP excitation can be highly efficient and even comparable to that with an electric field, so that their composition can lead to selective unidirectional excitation.
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Two fundamental concepts underpin the SOI of light: optical angular momentum and geometric (Berry) phases for light.
“Two important fundamental concepts underpin the SOI of light: optical angular momentum 57- 59 and geometric (Berry) phases for light 60- 62 .”
From Spin–orbit interactions of light (2015) · cites this paper as [58]
For paraxial optical beams, angular momentum can be decomposed into three separately-observable components: spin AM, intrinsic orbital AM, and extrinsic orbital AM.
“For paraxial (collimated) optical beams, AM can be decomposed in three separately-observable components: (i) spin AM (SAM), (ii) intrinsic orbital AM (IOAM), and (iii) extrinsic orbital AM (EOAM).”
From Spin–orbit interactions of light (2015) · cites this paper as [58]
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- Authors
- Lee, S.-Y., Lee, I.-M., Park, J., Oh, S., Lee, W., Kim, K.-Y., & Lee, B.
- Affiliations
- Seoul National University (KR)
- Sejong University (KR)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2012-05-25
- Volume
- 108
- Issue
- 21
- Pages
- 213907-213907
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2323264240
- Cited by
- 158
- References
- 20
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 9 · 2021: 6 · 2020: 10 · 2019: 11 · 2018: 10 · 2017: 16 · 2016: 23 · 2015: 27 · 2014: 21 · 2013: 9
- FWCI
- 10.38
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Plasmonic and Surface Plasmon Research
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
- Keywords
- surface plasmon polaritons, nanoslits, oblique incidence, magnetic field excitation, unidirectional excitation, edge currents, plasmonics
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