Silicon-Based All-Dielectric Metasurface on an Iron Garnet Film for Efficient Magneto-Optical Light Modulation in Near IR Range

Krichevsky, Denis M.; Xia, Shuang; Mandrik, Mikhail P.; Ignatyeva, Daria O.; Bi, Lei; Belotelov, V. I.

doi:10.3390/nano11112926

Cited by 9 publications

(4 citation statements)

References 35 publications

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“…Numerous initiatives, including Bi/Ce doping, [8][9][10][11][12][13] surface structure modification, [14][15][16][17] modulation coherence, [18] and silicon-based integrated devices, [19,20] have been devoted to address these issues. Bi:YIG has attained the largest 𝜃F in a visible range (2 × 10 5 deg/cm @525 nm), [9,21] although 𝜃F in near-infrared is only ∼ −3 × 10 3 deg/cm.…”

mentioning

confidence: 99%

Observation of Enhanced Faraday Effect in Eu-Doped Ce:YIG Thin Films

Zhang 张,

Zhu 朱,

Zhan 湛

et al. 2023

Chinese Phys. Lett.

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Ce: YIG thin-film is an ideal candidate for magneto-optical devices with giant Faraday effect in the near-infrared range, but is hindered by a limited Ce3+ / Ce4+ ratio and a high saturation driving field. To address this issue, Eu doping increased the Faraday rotation angle by ~ 40% to 1.315×104 deg/cm and decreased the saturation driving field by ~ 38% to 1.17 kOe in Eu0.75Ce1Y1.25Fe5O12relative to Ce1Y2Fe5O12 pristine. The mechanism is attributed to the conversion of Ce4+ to Ce3+ and the weakening of ferrimagnetism by Eu doping. This work not only provides strategies for improving Ce3+/Ce4+ ratio in Ce: YIG, but also develops (Eu, Ce): YIG with promising Faraday rotation angle for magneto-optical devices.

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confidence: 99%

Observation of Enhanced Faraday Effect in Eu-Doped Ce:YIG Thin Films

Zhang 张,

Zhu 朱,

Zhan 湛

et al. 2023

Chinese Phys. Lett.

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“…The computational findings, illustrated in figure 3 [19] and at the TMOKE enhancement locations, the transmittance consistently exceeds that of the magnetoplasmonic structure by over 10%, where the transmittance or reflected signal is approximately zero at the resonance points, indicating lower losses for our MOPC structure. Furthermore, an examination of the periods of 285 and 290 nm in these figures reveals a significantly greater TMOKE enhancement induced by mode A than by mode B, surpassing that of reported similar structures [16,19,23]. To clarify this observation, the cross-section of the Hy component under incident angles of 36.42°and 68.99°for the period of 285 nm was evaluated.…”

Section: Resultsmentioning

confidence: 84%

Dielectric crystal coupled with guided-mode resonance to enhance the magneto-optical Kerr effect and sensing behavior in transmission mode

Shi,

Liu,

Zhang

et al. 2024

Phys. Scr.

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In this study, we introduce a high-performance magneto-optical sensor that features enhanced amplitude and sensitivity, achieved through guided-mode resonance (GMR) excitations in an aluminum antimonide slab. This advancement is facilitated by a square, periodically arranged nanorod structure comprising dielectric materials. The electromagnetic field distributions were obtained along with the transmission spectra to elucidate the GMR mode in our proposed structure, thereby highlighting the enhancement of the transverse magneto-optical Kerr effect (TMOKE) signal in the transmitted mode and the corresponding sensing performance. The findings demonstrate that the position of the TMOKE resonance is remarkably responsive to variations in the background refractive index, yielding an impressive sensitivity of 188.7° per refractive index unit, coupled with a narrow linewidth owing to the inherent low loss of dielectric materials. This investigation lays the groundwork for novel advancements in linear optics, integrated optical circuits, and low-loss biosensing applications.

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“…Further advancements in material science, particularly the creation of advanced dielectric materials exhibiting low loss and high refractive index across a broad spectrum from UV to IR wavelengths, hold promise for enhancing metasurface performance. Furthermore, the emergence of multifunctional dielectric materials with tunable optical properties, including phase-change materials such as germanium antimony telluride (Ge2Sb2Te5 or GST) [339] , vanadium dioxide (VO2) [340] , and antimony trisulfide (Sb2normalS3) [341] ; electro-optic materials like lithium niobate (LiNbO3) [342] ; and thermo-optic materials like silicon (Si) [343] and liquid crystals [344] ; as well as electrical properties, such as ferroelectric materials like barium titanate (BaTiO3) [345] and graphene [346] ; magnetic properties, such as multiferroic materials like bismuth ferrite (BiFeO3) [347] ; and magneto-optic materials like yttrium iron garnet (YIG) [348] , along with intensity-modulated nonlinear materials like metallic quantum wells [349–351] , offers versatile options for metasurface fabrication and functionality enhancement. The combination of tunable properties in these materials has shown promising applications in dynamic, reconfigurable, and high-performance dielectric metasurfaces, including dynamic holograms [352] , tunable imaging [353–355] , active beam steering [356] , and chirality tuning in several recent studies [341] .…”

Section: Perspective and Outlookmentioning

confidence: 99%

Advanced manufacturing of dielectric meta-devices

Yang,

Zhou,

Tsai

et al. 2024

Photonics Insights

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Metasurfaces, composed of two-dimensional nanostructures, exhibit remarkable capabilities in shaping wavefronts, encompassing phase, amplitude, and polarization. This unique proficiency heralds a transformative paradigm shift in the domain of next-generation optics and photonics, culminating in the development of flat and ultrathin optical devices. Particularly noteworthy is the all-dielectric-based metasurface, leveraging materials such as titanium dioxide, silicon, gallium arsenide, and silicon nitride, which finds extensive application in the design and implementation of high-performance optical devices, owing to its notable advantages, including a high refractive index, low ohmic loss, and cost-effectiveness. Furthermore, the remarkable growth in nanofabrication technologies allows for the exploration of new methods in metasurface fabrication, especially through wafer-scale nanofabrication technologies, thereby facilitating the realization of commercial applications for metasurfaces. This review provides a comprehensive overview of the latest advancements in state-of-the-art fabrication technologies in dielectric metasurface areas. These technologies, including standard nanolithography [e.g., electron beam lithography (EBL) and focused ion beam (FIB) lithography], advanced nanolithography (e.g., grayscale and scanning probe lithography), and large-scale nanolithography [e.g., nanoimprint and deep ultraviolet (DUV) lithography], are utilized to fabricate highresolution, high-aspect-ratio, flexible, multilayer, slanted, and wafer-scale all-dielectric metasurfaces with intricate nanostructures. Ultimately, we conclude with a perspective on current cutting-edge nanofabrication technologies.

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Silicon-Based All-Dielectric Metasurface on an Iron Garnet Film for Efficient Magneto-Optical Light Modulation in Near IR Range

Cited by 9 publications

References 35 publications

Observation of Enhanced Faraday Effect in Eu-Doped Ce:YIG Thin Films

Observation of Enhanced Faraday Effect in Eu-Doped Ce:YIG Thin Films

Dielectric crystal coupled with guided-mode resonance to enhance the magneto-optical Kerr effect and sensing behavior in transmission mode

Advanced manufacturing of dielectric meta-devices

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