Transverse magneto-optical Kerr effect: the phase change of reflected light

Penfold, C.; Collins, R. T.; Tufaile, Alberto; Souche, Y.

doi:10.1016/s0304-8853(01)01315-4

Cited by 21 publications

(12 citation statements)

References 3 publications

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“…For instance, an external magnetic field is capable of changing the rotation of polarization by a thin layer of magneto-optical material, which is termed the Faraday effect in transmission geometry 1,2 and polar Kerr effect in reflection geometry. [3][4][5][6] Such a magnetic field can also influence the intensity of light transmitted and reflected in scenarios of the transverse magneto-optical Kerr effect [7][8][9] and longitudinal magneto-photonic intensity effect. 10 Applying a magnetic field to magneto-optical materials can also change the nonlinear optical effects of the material.…”

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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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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“…20 They have also been used for characterizing surface magnetism, imaging domains and magnetic singularities. 21,22 In particular, a large magneto-optical Kerr activity was induced in the La 3+ substituted strontium ferrites in our previous work. 23 Meanwhile, our works have shown that the performance of Sr M-type hexagonal ferrites can be improved by introducing rare-earths La.…”

Section: Introductionmentioning

confidence: 70%

Structure, magnetic and magneto-optical properties of La-Ca-Co substituted strontium ferrites

Huang

Liu

Fernández-García

et al. 2016

Materials Technology

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2016): Structure, magnetic and magnetooptical properties of La-Ca-Co substituted strontium ferrites, Materials Technology,Strontium ferrites Sr 0.70-x La0.3 CaxFe 11.7 Co 0.3 O 19 (x = 0.00, 0.05, 0.10, 0.15, 0.20, 0.25, 0.30)，according to the formula Sr 1-x -y Ca x La y •Fe12-y Co y O19 , were prepared by the conventional ceramic process. The structure, morphology, optical, magnetic properties and transverse magneto-optical Kerr effect of the samples were studied by X-ray diffraction (XRD), vibrating sample magnetometer (VSM), scanning electron microscope (SEM) and magneto-optical ellipsometry. It is found that the samples are single phase except the samples with the largest substitution amount, x = 0.25 and x = 0.30. Doping with Ca 2+ , the coercivity of these material magnets is increased while their magnetization is nearly unchanged. In all cases, a strong transverse magneto-optical Kerr activity appears according to the optical and magneto-optical spectra of the samples.

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“…The transverse Kerr effect is seen as a change in the r pp Fresnel coefficient, r ss being unaffected by the application of a magnetic field, Penfold et al [27] measured the phase change associated with a specular Co film in the transverse Kerr configuration and showed that a change in phase of 90…”

Section: Co Coated Gratingsmentioning

confidence: 99%

Magneto-optic behaviour in the presence of surface plasmons

Newman

Wears

Matelon

et al. 2008

J. Phys.: Condens. Matter

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Insight into the mechanism responsible for the enhanced level of magneto-optical (MO) activity observed from magnetic surfaces when supporting propagating surface plasmons (SPs) is provided by studies of ferromagnetic Ni and Co gratings where SPs are generated and interact magneto-optically at the air/ferromagnetic interface. These ferromagnetic gratings were subsequently coated with semi-transparent Ag layers. In these systems only some 30% of the light incident on the air/Ag interface is reflected; most is converted to surface plasmons whilst the remainder propagates to reflect off the ferromagnetic surface where it undergoes a MO interaction before returning through the Ag. The precise nature of the beam returned from the ferromagnetic and the MO signature imprinted on it depends on the relative magnitude of two driving sources: the E-field of the light wave and the E-field associated with SPs penetrating through the Ag to the ferromagnetic. Evidence is obtained indicating that the degree of MO enhancement correlates strongly with the magnitude of the intense electric field associated with the presence of SPs at the ferromagnetic surface, confirming previous experimental studies postulating that enhanced MO effects are not solely a consequence of the reduction in reflection that is experienced at surface plasmon resonance.

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Transverse magneto-optical Kerr effect: the phase change of reflected light

Cited by 21 publications

References 3 publications

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

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

Structure, magnetic and magneto-optical properties of La-Ca-Co substituted strontium ferrites

Magneto-optic behaviour in the presence of surface plasmons

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