The origin of magnetic polarizability in metamaterials at optical frequencies - an electrodynamic approach

Rockstuhl, Carsten; Zentgraf, Thomas; Pshenay-Severin, Ekaterina; Petschulat, J.; Chipouline, A.; Kühl, J.; Pertsch, Thomas; Gießen, Harald; Lederer, F.

doi:10.1364/oe.15.008871

Cited by 65 publications

(38 citation statements)

References 30 publications

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“…In accordance with previous work 39,45,46 , the resonance excited in x polarization is characterized by a strong electric dipole moment 39 , which is naturally accompanied by strong radiative losses and, hence, a broad spectral line width; we therefore refer to this mode as the electric mode. In contrast, the resonance that is excited in y polarization is characterized by a superposition of an electric dipole, an electric quadrupole and a weaker magnetic dipole moment 39 and results in a narrower spectral linewidth of the resonance as compared with the electric mode.…”

Section: Resultssupporting

confidence: 81%

Dual-channel spontaneous emission of quantum dots in magnetic metamaterials

et al. 2013

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Metamaterials, artificial electromagnetic media realized by subwavelength nano-structuring, have become a paradigm for engineering electromagnetic space, allowing for independent control of both electric and magnetic responses of the material. Whereas most metamaterials studied so far are limited to passive structures, the need for active metamaterials is rapidly growing. However, the fundamental question on how the energy of emitters is distributed between both (electric and magnetic) interaction channels of the metamaterial still remains open. Here we study simultaneous spontaneous emission of quantum dots into both of these channels and define the control parameters for tailoring the quantum-dot coupling to metamaterials. By superimposing two orthogonal modes of equal strength at the wavelength of quantum-dot photoluminescence, we demonstrate a sharp difference in their interaction with the magnetic and electric metamaterial modes. Our observations reveal the importance of mode engineering for spontaneous emission control in metamaterials, paving a way towards loss-compensated metamaterials and metamaterial nanolasers.

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Section: Resultssupporting

confidence: 81%

Dual-channel spontaneous emission of quantum dots in magnetic metamaterials

et al. 2013

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“…Figure 3(a) clearly shows that a distinct current loop appears in the SRR. This indicates that the fundamental ring resonance of the SRR is unambiguously excited at the wavelength of the new peak [9]. This point can also be reinforced by the magnetic field pattern showed in Fig.…”

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confidence: 63%

Transmission resonance in a composite plasmonic structure

et al. 2009

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The design, fabrication, and optical properties of a composite plasmonic structure, a two-dimentional array of split-ring resonators inserted into periodic square holes of a metal film, have been reported. A new type of transmission resonance, which makes a significant difference from the conventional peaks, has been suggested both theoretically and experimentally. To understand this effect, a mechanism of ringresonance induced dipole emission is proposed.

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“…The first design group follows to ideas of work [1] and includes different modifications of metallic split-ring resonators (SRRs) manufactured on dielectric substrates such as 4-split SRRs [2], dual nanobars and nanorods [3][4][5][6], U-shaped SRRs [7][8][9] and others similar lattices performed as stacks of planar grids of plasmonic nanoparticles which are prepared or should be prepared on dielectric substrates. The next approach is based on so-called optical fishnet structures (see e.g.…”

Section: Introductionmentioning

confidence: 99%