Plasmonics and Metamaterials

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Plasmons are density waves of electrons, created when light hits the surface of a metal. Because these density waves are generated at optical frequencies, they can encode a lot of information. Plasmonics – called "light on a wire," - is thought to embody the strongest points of both optical and electronic data transfer. It would allow the transmission of data at optical frequencies along the surface of a tiny metal wire, despite the fact that the data travels in the electronic form rather than in a photonic form. The strength of plasmonic waves is that they can be easily converted to and from light waves. Main problems: losses and localization of light.

A metamaterial is a material which gains its properties from its structure rather than from properties of materials. In most cases in optics it is a nanostructured metal-dielectric composite. A metamaterial may exhibit some unusual properties, e.g. a negative refractive index, never occurred in nature. In optics metamaterials can help to produce a superlens and hyperlens with resolution beyond the diffraction limit revealing data with nanometer-scale features. Metamaterials are the key players in the new direction of transformation optics (e.g. in cloaking). Main problems: losses, anisotropy and bandwidth.

Plasmons waves exist in metamaterials and actually determine their properties, therefore both directions are intensively interwoven.  

 

Contact information

Ørsteds Plads
343
DK-2800
Kgs. Lyngby
Denmark
  • Phone: +45 4525 6352
  • Fax: +45 4593 6581
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Publications

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  • Optics Express

    ISSNs: 1094-4087, 10944087

    Optical Society of America, United States

    BFI (2015): BFI-level 2, ISI indexed (2013): ISI indexed yes

    Central database

    Journal

  • Progress in Biomedical Optics and Imaging

    ISSNs: 1605-7422, 0277-786X, 0277-786X, 0361-0748, 0277-786X

    ISSNs (Electronic): 1042-4687

    S P I E - International Society for Optical Engineering, United States

    BFI (2015): BFI-level 1, ISI indexed (2013): ISI indexed no

    Central database

    Journal

  • Applied Physics Letters

    ISSNs: 0003-6951, 00036951

    ISSNs (Electronic): 1077-3118

    American Institute of Physics, United States

    BFI (2015): BFI-level 2, ISI indexed (2013): ISI indexed yes

    Central database

    Journal

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