Giant enhancement of Kerr rotation in two-dimensional Bismuth iron garnet/Ag photonic crystals

Liang, Hong; Huan, Liu; Zhang, Qiang; Fu, Shufang; Zhou, Sheng; Wang, Xuan-Zhang

doi:10.1088/1674-1056/24/6/067807

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…The details of this magneto-optical switch and other magnetic film devices will be discussed elsewhere. [46,47] 3.5. Growth and magneto-optical properties of large sized single-crystal thick TmBiIG films from lead-free Fflux by LPE technology Bismuth substituted iron garnet films have been shown to be a prospective material for magneto-optic (MO) device applications such as Faraday isolators, MO modulators, visualizers, magneto-static wave devices, etc.…”

Section: Magneto-optical Garnet Filmsmentioning

confidence: 99%

Liquid phase epitaxy magnetic garnet films and their applications

Rao¹,

Zhang²,

Yang³

et al. 2018

Chinese Phys. B

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Liquid phase epitaxy (LPE) is a mature technology. Early experiments on single magnetic crystal films fabricated by LPE were focused mainly on thick films for microwave and magneto-optical devices. The LPE is an excellent way to make a thick film, low damping magnetic garnet film and high-quality magneto-optical material. Today, the principal challenge in the applied material is to create sub-micrometer devices by using modern photolithography technique. Until now the magnetic garnet films fabricated by LPE still show the best quality even on a nanoscale (about 100 nm), which was considered to be impossible for LPE method.

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Section: Magneto-optical Garnet Filmsmentioning

confidence: 99%

Liquid phase epitaxy magnetic garnet films and their applications

Rao¹,

Zhang²,

Yang³

et al. 2018

Chinese Phys. B

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“…Gamet et al 20 designed a one-dimensional fully dielectric resonant grating structure to enhance the four magneto-optical effects, where the polar Kerr rotation angle can reach up to 14 deg, but the disadvantage is that the polar Kerr rotation maximum of the structure coincides with the position of the lowest reflectivity and the reflectivity is almost zero, so the overall performance of the structure is weak. Zhang et al 21 obtained a maximum polar magneto-optical Kerr rotation angle of 7.92 deg by constructing a four-layer Fabry-Perot cavity, and demonstrated the significant enhancement of the PMOKE in the composite structure by experimental measurements and theoretical calculations, but the PMOKE enhancement is only concentrated in the very short wavelength range and cannot be exploited in the longer spectral range; Liang et al 22 investigated the PMOKE in magnetic plasmas using two-dimensional BIG/Ag magnetic photonic crystals structure with a maximum polar magneto-optical Kerr angle of 3.03 deg, which is three orders of magnitude higher than pure BIG films. However, the reflectivity is generally low in the larger range of Kerr rotation, which is not favorable for practical applications.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al 21 . obtained a maximum polar magneto-optical Kerr rotation angle of 7.92 deg by constructing a four-layer Fabry–Perot cavity, and demonstrated the significant enhancement of the PMOKE in the composite structure by experimental measurements and theoretical calculations, but the PMOKE enhancement is only concentrated in the very short wavelength range and cannot be exploited in the longer spectral range; Liang et al 22 . investigated the PMOKE in magnetic plasmas using two-dimensional BIG/Ag magnetic photonic crystals structure with a maximum polar magneto-optical Kerr angle of 3.03 deg, which is three orders of magnitude higher than pure BIG films.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the polar magneto-optical Kerr effect with plasma hybrid microstructure

Luo,

Wang

2024

Opt. Eng.

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Since the magneto-optical Kerr effect plays an important role in the technology of detecting thin film magnetism, and the current detection technology has problems such as poor magneto-optical Kerr signals as well as large frequency of change, how to enhance the Kerr response of magneto-optical materials has become an important issue in today's scientific research. A three-layer plasma hybrid microstructure covered with "L"-shaped periodic aluminum blocks aiming for Kerr response enhancement is proposed. In the near-infrared wavelength range of 0.6 to 1.1 μm, by varying the size of the opening and width of the upper aluminum film, a maximum polar magneto-optical Kerr rotation angle of 11.08 deg was obtained in a bismuth iron garnet film with thin films and accompanied by a high reflectance. The effects of different opening sizes, widths, incidence angles, magnetic field sizes, metal materials, and magneto-optical materials on the structure were also investigated. The results show that the structure can both increase the Kerr rotation angle by adjusting the magnetic field and incidence angle as well as combine different plasma metals to enhance the magneto-optical Kerr effect, which improves the universality of engineering applications. In addition, the electric field contours at the intersection of different materials are given and the physical mechanism of the enhanced polar magneto-optical Kerr rotation effect is explained. The results of this work will provide some guidance and help for the amplification of experimental measurement signals of the Kerr effect and the design of tunable magneto-optical Kerr devices.

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Tunable Magneto-Optical Kerr Effects of Nanoporous Thin Films

Zhang

Ding

et al. 2017

Sci Rep

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Magnetoplasmonics, combining magnetic and plasmonic functions, has attracted increasing attention owing to its unique magnetic and optical properties in various nano-architectures. In this work, Ag, CoFeB and ITO layers are fabricated on anodic aluminum oxide (AAO) porous films to form hybrid multi-layered nanoporous thin films by magnetron sputtering deposition process. The designed nanostructure supports localized surface plasmon resonance (LSPR) and tunable magneto-optical (MO) activity, namely, the sign inversion, which can be controlled by AAO porous film geometry (pore diameter and inter-pore spacing) flexibly. The physical mechanism of this special MO phenomena is further analyzed and discussed by the correlation of Kerr rotation and electronic oscillations controlled by the surface plasmon resonance that is related to the nanoporous structure.

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Giant enhancement of Kerr rotation in two-dimensional Bismuth iron garnet/Ag photonic crystals

Cited by 5 publications

References 27 publications

Liquid phase epitaxy magnetic garnet films and their applications

Liquid phase epitaxy magnetic garnet films and their applications

Enhancement of the polar magneto-optical Kerr effect with plasma hybrid microstructure

Tunable Magneto-Optical Kerr Effects of Nanoporous Thin Films

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