All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances

Ignatyeva, Daria O.; Karki, Dolendra; Voronov, Andrey A.; Kozhaev, M. A.; Krichevsky, Denis M.; Chernov, A. I.; Levy, M.; Belotelov, V. I.

doi:10.1038/s41467-020-19310-x

Cited by 92 publications

(67 citation statements)

References 54 publications

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“…This mode itself is completely insensitive to

component of the magnetic field [ 32 ]. However, if a magnetic field in polar configuration (

) is applied, the eigen polarization of the mode changes [ 36 , 37 ] and it acquires TM-components that were absent in the nonmagnetic case. In its turn, the emerged TM-components are sensitive to the switching of the direction of the

component of the external magnetic field.…”

Section: Resultsmentioning

confidence: 99%

Sensing of Surface and Bulk Refractive Index Using Magnetophotonic Crystal with Hybrid Magneto-Optical Response

Ignatyeva

Kapralov

Golovko

et al. 2021

Sensors

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We propose an all-dielectric magneto-photonic crystal with a hybrid magneto-optical response that allows for the simultaneous measurements of the surface and bulk refractive index of the analyzed substance. The approach is based on two different spectral features of the magneto-optical response corresponding to the resonances in p- and s-polarizations of the incident light. Angular spectra of p-polarized light have a step-like behavior near the total internal reflection angle which position is sensitive to the bulk refractive index. S-polarized light excites the TE-polarized optical Tamm surface mode localized in a submicron region near the photonic crystal surface and is sensitive to the refractive index of the near-surface analyte. We propose to measure a hybrid magneto-optical intensity modulation of p-polarized light obtained by switching the magnetic field between the transverse and polar configurations. The transversal component of the external magnetic field is responsible for the magneto-optical resonance near total internal reflection conditions, and the polar component reveals the resonance of the Tamm surface mode. Therefore, both surface- and bulk-associated features are present in the magneto-optical spectra of the p-polarized light.

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“…This mode itself is completely insensitive to

component of the magnetic field [ 32 ]. However, if a magnetic field in polar configuration (

component of the external magnetic field.…”

Section: Resultsmentioning

confidence: 99%

Sensing of Surface and Bulk Refractive Index Using Magnetophotonic Crystal with Hybrid Magneto-Optical Response

Ignatyeva

Kapralov

Golovko

et al. 2021

Sensors

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“…[73] The high FoM and the single-layer growth process make Ce and especially Bi-substituted TbIG attractive materials for integrated nonreciprocal photonic devices or for other applications requiring MO materials such as magnetophotonic crystals or other nonreciprocal MO metamaterials. [74,75] [12] of 99.999% pure Tb 2 O 3 , CeO 2 , Bi 2 O 3 , and Fe 2 O 3 powders. The films were grown at a repetition rate of 10 Hz and laser fluence of 1.5 and 2.5 J cm −2 .…”

Section: Discussionmentioning

confidence: 99%

High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si

Fakhrul

Tazlaru

Khurana

et al. 2021

Advanced Optical Materials

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ferrimagnetic yttrium iron garnet (YIG, Y 3 Fe 5 O 12 ) offer a desirable combination of a high Faraday rotation and low optical absorption. Cerium-and bismuth-substituted yttrium iron garnet (CeYIG, BiYIG) have an excellent MO figure of merit (FoM, the ratio of Faraday rotation to optical absorption), [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] and bismuth iron garnet and paramagnetic terbium gallium garnet are both used in bulk optical isolators.In order to incorporate these complex oxides into photonic integrated circuits, films with high FoM must be grown onto photonic substrates and devices. Although YIG crystallizes readily on non-garnet substrates, it has a low Faraday rotation (≈+100° cm −1 at 1550 nm) [10] and FoM. Crystallization of CeYIG or BiYIG without secondary phases can be accomplished by depositing then annealing the film directly or by annealing a bilayer consisting of a YIG seedlayer placed either above or below the active MO layer. [12,13] When a seed layer is included, a top seed layer is preferable as it maximizes coupling of the MO garnet with an optical mode propagating through an underlying waveguide.Like YIG, rare earth garnets such as terbium iron garnet (TbIG) or dysprosium iron garnet [19,20] can crystallize directly on non-garnet substrates to form polycrystalline films. TbIG is a thermodynamically stable phase like YIG [21,22] which promotes garnet-phase crystallization without a seed layer. TbIG has a Faraday rotation in 1100-1550 nm wavelength range of ≈ +270 to +1000° cm −1 . [23][24][25] Bi-substituted TbIG has been grown by liquidphase epitaxy and flux methods [23][24][25][26][27] or sol-gel methods, [28] and more recently thin films of Ce-and Bi-substituted TbIG (CeTbIG, BiTbIG) were grown on Si by sputtering. [29][30][31][32][33][34] Sputtered BiTbIG with Bi substitution of 14% of the Tb sites has a Faraday rotation of ≈−500° cm −1 at 1550 nm, [29] the same sign as that of CeYIG, which at 1550 nm wavelength had a Faraday rotation of at least −3700° cm −1 . [29] CeTbIG films with Ce substituting up to 25% of the Tb sites showed a Faraday rotation above −3200 ± 200° cm −1 , [31,32] but a 44 nm thick magnetic dead layer formed between the waveguide and the CeTbIG, hindering the interaction of evanescent light with the MO garnet cladding. [32] However, the optical absorption and FoM of these Bi-and Cesubstituted TbIG materials have not yet been reported.In this paper, we report the growth, magnetic, and optical characteristics of polycrystalline thin films of TbIG, CeTbIG, and BiTbIG synthesized using pulsed laser deposition (PLD) on Films of polycrystalline terbium iron garnet (TbIG), cerium-substituted TbIG (CeTbIG), and bismuth-substituted TbIG (BiTbIG) are grown on Si substrates by pulsed laser deposition. The films grow under tensile strain due to thermal mismatch with the Si substrate, resulting in a dominant magnetoelastic anisotropy which, combined with shape anisotropy, leads to in-plane magnetization. TbIG has a compensation temperature of 253 K which is...

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“…9. Ignatyeva et al [73] observed the intensity modulation of transparent all-dielectric MO metasurfaces composed of 2D nanopillar array on an ultrathin irongarnet slab in a dual-polarization regime, which was very promising for sensing, vector magnetometer, and light modulation applications.…”

Section: Magnetoplasmonic and Magneto-optical Metasurfacesmentioning

confidence: 99%

Magnetically controllable metasurface and its application

Huang

et al. 2021

Front. Optoelectron.

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The dynamic control of the metasurface opens up a vital technological approach for the development of multifunctional integrated optical devices. The magnetic field manipulation has the advantages of sub-nanosecond ultra-fast response, non-contact, and continuous adjustment. Thus, the magnetically controllable metasurface has attracted significant attention in recent years. This study introduces the basic principles of the Faraday and Kerr effect of magneto-optical (MO) materials. It classifies the typical MO materials according to their properties. It also summarizes the physical mechanism of different MO metasurfaces that combine the MO effect with plasmonic or dielectric resonance. Besides, their applications in the nonreciprocal device and MO sensing are demonstrated. The future perspectives and challenges of the research on MO metasurfaces are discussed.

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All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances

Cited by 92 publications

References 54 publications

Sensing of Surface and Bulk Refractive Index Using Magnetophotonic Crystal with Hybrid Magneto-Optical Response

Sensing of Surface and Bulk Refractive Index Using Magnetophotonic Crystal with Hybrid Magneto-Optical Response

High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si

Magnetically controllable metasurface and its application

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