One-dimensional magnetophotonic crystals

We report on significant enhancement of the magnetooptical effects in gyrotropic systems of a metallic film perforated by subwavelength hole arrays and a uniform dielectric film magnetized perpendicular to its plane. Calculations, based on a rigorous coupled-wave analysis, demonstrate the Faraday and Kerr effect spectra having several resonance peaks in the near infrared range, some of them coinciding with transmittance peaks. Qualitative analysis revealed that magnetic polaritons being coupled magnetic-film waveguiding modes with surface plasmons play a crucial role in the observed effect. At the same time, substantial MO effect enhancement can be achieved in some nanostructured materials owing to the materials' interesting optical properties inherent to their nanoscaled

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“…This was shown recently by observation of giant Faraday effect in magnetic photonic crystals [3][4][5].…”

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confidence: 53%

Extraordinary Magneto-Optical Effects and Transmission through Metal-Dielectric Plasmonic Systems

2007

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“…In the p-in, p-out polarization combination, the nonmagnetic (crystallographic) SHG field E cryst 2ω originates from χ (2) zzz , χ (2) zxx , and χ (2) xxz elements of the χ (2)cryst tensor. The magnetization-induced SHG field E magn 2ω exp(iϕ M ) is coming from χ (2) xzzY , χ (2) zxzY , and χ (2) xxxY elements of the χ (2) and E magn 2ω are enhanced similarly due to the fundamental field localization.…”

Section: Mshg In Magnetophotonic Microcavitiesmentioning

confidence: 99%

“…Literal magnetophotonic crystals (MPC) formed of multilayer stacks of magnetic garnet -silicon oxide pairs were developed recently 3) . Both these classes of magnetic PBG structures show perspective linear magneto-optical properties: linear Faraday effect is strongly enhanced in magnetophotonic microcavities 2) and magnetophotonic crystals 3) . Meanwhile, mechanisms of this enhancement of Faraday rotation are different for MPM and MPC.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Magneto-Optics in Magnetophotonic Crystals

2006

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In this review paper, the results of recent observation and studies of the nonlinear magneto-optical effects in magnetophotonic crystals (MPC) are surveyed. Key point of our interests in nonlinear optics of MPC is extension of nonlinear optical enhancement recently observed in dielectric photonic crystals (PC) to enhancement of intrinsically weak nonlinear magneto-optical effects. These PC mechanisms of strong increase of efficiency of nonlinear optical effects are related to optical field increase due to the light localization and parametric enhancement due to the phase-matching. Strong magnetization-induced intensity effect in second-harmonic (SHG) and third-harmonic (THG) generation is observed in magnetophotonic microcavities formed from single half-wave magnetic garnet layers, sandwiched between two nonmagnetic dielectric photonic mirrors. Absolute values of magnetization-dependent contributions to the SHG and THG intensity are strongly enhanced due to light localization in microcavity garnet spacer. Magnetization-induced intensity effects in SHG are observed in two types of MPC: one-dimensional multilayer MPC formed from pairs of alternating quarter-wavelength magnetic garnet and silicon oxide layers and three-dimensional MPC based on synthetic silica opals infiltrated by magnetic garnet. Parametric enhancement of MSHG intensity is due to phase-matching at the bend edge. Pure magnetic component of phase-matched SHG is enhanced by two orders of magnitude in garnet MPC in experimental geometry as nonmagnetic SHG is canceled. Apart from intensity effects, magnetic impact strongly influences other parameters of the SHG radiation in MPC. Significant magnetization-induced variations of phase and rotation of polarization of the SHG waves are observed and systematically studied in garnet multilayer MPC.

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“…It has been reported that one-dimensional MPCs based on magnetic and nonmagnetic dielectric multilayers realize a huge Faraday rotation angle. [1][2][3][4][5] This MO enhancement originates from the localization of light at selected wavelengths in photonic band-gap structures. Similarly, MO cavities consisting of stacked layer structure enhance the MO effect by multiple re ections of light inside the structure.…”

Section: Introductionmentioning

confidence: 99%

Magneto-Optical Enhancement and Chemical Sensing Applications of Perpendicular Magnetic CoPt/Ag Stacked Structures with a ZnO Intermediate Layer

2016

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The magneto-optical (MO) properties of perpendicular magnetic Co 80 Pt 20 /Ag stacked lms with ZnO intermediate layers of different thickness were investigated by polar Kerr measurements. The insertion of a thin ZnO layer at the CoPt/Ag interface improved the perpendicular magnetic properties and MO enhancement at the plasma edge of Ag. The CoPt/Ag stacked lms with a 2-nm-thick ZnO layer exhibited an ideal square out-of-plane hysteresis loop with a relatively large Kerr angle of approximately 1.4 in the ultraviolet region. The peak position of the MO plasma enhancement shifted to longer wavelength as the thickness of the ZnO layer increased, and a new peak appeared consistent with the band-gap energy of ZnO. Moreover, the CoPt/ZnO/Ag stacked layer acted as a Fabry-Pérot etalon when the thickness of the ZnO layer was the sub-wavelength of incident light. As a result, a MO cavity was realized in the stacked lms, and an ideal square MO loop with a large Kerr rotation angle of approximately 20 was obtained in the visible region. The MO enhancement factor reached approximately 200. We demonstrated that the stacked lms were sensitive to changes in the optical conditions at the lm surface. The developed MO cavity can act as a highly accurate chemical and biological sensing system under simple measurement conditions.

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One-dimensional magnetophotonic crystals

Cited by 305 publications

References 4 publications

Extraordinary Magneto-Optical Effects and Transmission through Metal-Dielectric Plasmonic Systems

Extraordinary Magneto-Optical Effects and Transmission through Metal-Dielectric Plasmonic Systems

Nonlinear Magneto-Optics in Magnetophotonic Crystals

Magneto-Optical Enhancement and Chemical Sensing Applications of Perpendicular Magnetic CoPt/Ag Stacked Structures with a ZnO Intermediate Layer

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