dorsal/arxiv
View SchemaMeta-materials with negative refractive index at Optical Frequencies
| Authors | S. Anantha Ramakrishna, Sangeeta Chakrabarti, Olivier J. F. Martin |
|---|---|
| Categories | |
| ArXiv ID | physics/0703003 |
| URL | https://arxiv.org/abs/physics/0703003 |
Abstract
We demonstrate that arrays of split ring resonators (SRR) can have negative refractive index at optical frequencies (~1.4 eV). Our calculations reveal that the electric fields of radiation interact strongly with even symmetric SRR at optical frequencies as the size of the SRR becomes of the order of the wavelength (~lambda /3) for practicably realizable structures. We also demonstrate by calculations the focussing of a line source by a flat slab of a (2D) SRR medium. The negative refractive index here is related to the plasmonic excitations of the SRR and cannot be directly explained by the usual paradigm of negative dielectric permittivity and negative magnetic permeability in these limits when homogenization breaks down.
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"date_created": "2026-03-02T18:01:18.426000Z",
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"abstract": "We demonstrate that arrays of split ring resonators (SRR) can have negative\nrefractive index at optical frequencies (~1.4 eV). Our calculations reveal that\nthe electric fields of radiation interact strongly with even symmetric SRR at\noptical frequencies as the size of the SRR becomes of the order of the\nwavelength (~lambda /3) for practicably realizable structures. We also\ndemonstrate by calculations the focussing of a line source by a flat slab of a\n(2D) SRR medium. The negative refractive index here is related to the plasmonic\nexcitations of the SRR and cannot be directly explained by the usual paradigm\nof negative dielectric permittivity and negative magnetic permeability in these\nlimits when homogenization breaks down.",
"arxiv_id": "physics/0703003",
"authors": [
"S. Anantha Ramakrishna",
"Sangeeta Chakrabarti",
"Olivier J. F. Martin"
],
"categories": [
"physics.optics"
],
"title": "Meta-materials with negative refractive index at Optical Frequencies",
"url": "https://arxiv.org/abs/physics/0703003"
},
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