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Optical magnetic plasma in artificial flowers
KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
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2009 (English)In: Optics Express, ISSN 1094-4087, Vol. 17, no 13, 10800-10805 p.Article in journal (Refereed) Published
Abstract [en]

We report the design of an artificial flower-like structure that supports a magnetic plasma in the optical domain. The structure is composed of alternating "petals" of conventional dielectrics (epsilon > 0) and plasmonic materials (Re(epsilon) < 0). The induced effective magnetic current on such a structure possesses a phase lag with respect to the incident TE-mode magnetic field, similar to the phase lag between the induced electric current and the incident TM-mode electric field on a metal wire. An analogy is thus drawn with an artificial electric plasma composed of metal wires driven by a radio frequency excitation. The effective medium of an array of flowers has a negative permeability within a certain wavelength range, thus behaving as a magnetic plasma.

Place, publisher, year, edition, pages
2009. Vol. 17, no 13, 10800-10805 p.
URN: urn:nbn:se:kth:diva-18582ISI: 000267761100040ScopusID: 2-s2.0-67649286390OAI: diva2:336629
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Thylén, Lars
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