Optical properties of planar metallic photonic crystal structures: Experiment and theory

Christ, A.; Zentgraf, Thomas; Kühl, J.; Tikhodeev, S. G.; Gippius, N. A.; Gießen, Harald

doi:10.1103/physrevb.70.125113

Cited by 239 publications

(207 citation statements)

References 37 publications

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“…1. ) Besides the plasmon resonance, the nanowires introduce periodicity to the hybrid structure and hence enable light to couple into the magneto-optical thin film, which acts as a planar photonic crystal waveguide for photons 20,21 . The localized plasmon resonance and the waveguide resonance interact strongly, and this interaction can be tailored to engineer the magneto-optical properties.…”

Section: Resultsmentioning

confidence: 99%

“…Compared with Faraday rotation of the bare BIG film, À 0.17°, there is 1.9 times enhancement. The resonant shape of the Faraday rotation spectra and transmittance spectra is directly related to the waveguide-plasmon polaritons 20,21 . Cross-coupling of the TM and TE modes accounts for the enhancement of Faraday rotation.…”

Section: Resultsmentioning

confidence: 99%

“…It is achieved by incorporating nonreciprocal magneto-optical material with plasmonic photonic crystal [19][20][21] . Specifically, we fabricate plasmonic nanowire arrays on magneto-optical thin films and characterize the Faraday rotation by polarimetry.…”

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confidence: 99%

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Nonreciprocal plasmonics enables giant enhancement of thin-film Faraday rotation

et al. 2013

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Light propagation is usually reciprocal. However, a static magnetic field along the propagation direction can break the time-reversal symmetry in the presence of magneto-optical materials. The Faraday effect in magneto-optical materials rotates the polarization plane of light, and when light travels backward the polarization is further rotated. This is applied in optical isolators, which are of crucial importance in optical systems. Faraday isolators are typically bulky due to the weak Faraday effect of available magneto-optical materials. The growing research endeavour in integrated optics demands thin-film Faraday rotators and enhancement of the Faraday effect. Here, we report significant enhancement of Faraday rotation by hybridizing plasmonics with magneto-optics. By fabricating plasmonic nanostructures on laser-deposited magneto-optical thin films, Faraday rotation is enhanced by one order of magnitude in our experiment, while high transparency is maintained. We elucidate the enhanced Faraday effect by the interplay between plasmons and different photonic waveguide modes in our system.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Nonreciprocal plasmonics enables giant enhancement of thin-film Faraday rotation

et al. 2013

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“…TE, transverse electric; TM, transverse magnetic. 40 of the magneto-optical slab and forms a waveguide-plasmonpolariton (WPP). For the resulting TM-polarized WPP, there will then always exist a grating period such that its dispersion curve intersects with a TE waveguide dispersion curve at the same wavelength.…”

Section: Methodsmentioning

confidence: 99%

“…Using plasmons to enhance the Faraday effect has been proposed theoretically 37,38 and demonstrated experimentally. 36 The experimental demonstration suggested a hybrid plasmonic-dielectric waveguide, [39][40][41] consisting of a thin BIG film and an attached plasmonic grating, which realizes a sophisticated mechanism to enhance Faraday rotation. Here, we employ this mechanism and advance it to 220-nm-thick devices, which show five times greater polarization rotation than in previously reported experiments.…”

Section: Introductionmentioning

confidence: 99%

Tunable and switchable polarization rotation with non-reciprocal plasmonic thin films at designated wavelengths

et al. 2015

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We experimentally demonstrate an ultra-thin plasmonic optical rotator in the visible regime that induces a polarization rotation that is continuously tunable and switchable by an external magnetic field. The rotator is a magneto-plasmonic hybrid structure consisting of a magneto-optical EuSe slab and a one-dimensional plasmonic gold grating. At low temperatures, EuSe possesses a large Verdet constant and exhibits Faraday rotation, which does not saturate over a regime of several Tesla. By combining these properties with plasmonic Faraday rotation enhancement, a large tuning range of the polarization rotation of up to 8.46 for a film thickness of 220 nm is achieved. Furthermore, through experiments and simulations, we demonstrate that the unique dispersion properties of the structure enable us to tailor the wavelengths of the tunable polarization rotation to arbitrary spectral positions within the transparency window of the magneto-optical slab. The demonstrated concept might lead to important, highly integrated, non-reciprocal, photonic devices for light modulation, optical isolation, and magnetic field optical sensing. The simple fabrication of EuSe nanostructures by physical vapor deposition opens the way for many potentially interesting magneto-plasmonic systems and three-dimensional magneto-optical metamaterials.

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Optical Properties of Disordered Metallic Photonic Crystal Slabs

Nau

Schönhardt

Christ

et al. 2008

Nanophotonic Materials

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Optical properties of planar metallic photonic crystal structures: Experiment and theory

Cited by 239 publications

References 37 publications

Nonreciprocal plasmonics enables giant enhancement of thin-film Faraday rotation

Nonreciprocal plasmonics enables giant enhancement of thin-film Faraday rotation

Tunable and switchable polarization rotation with non-reciprocal plasmonic thin films at designated wavelengths

Optical Properties of Disordered Metallic Photonic Crystal Slabs

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