Article
Astronomy & Astrophysics
Yilun Guan, Arthur Kosowsky
Summary: This paper discusses the B-mode polarization signal of the cosmic microwave background and how to differentiate it from power-law tensor perturbations and primordial magnetic fields. It is found that a primordial magnetic field will induce a small-scale Faraday rotation, which can be detected using four-point statistics.
Article
Physics, Applied
Daria O. O. Ignatyeva, Denis M. M. Krichevsky, Vladimir I. I. Belotelov, Francois Royer, Sushree Dash, Miguel Levy
Summary: All-dielectric metasurfaces have low optical losses and a wide variety of optical modes, making them attractive for nanoscale light manipulation. Recent studies have found that the magneto-optical effects in these metasurfaces are greatly enhanced, with the ability to observe novel effects that are absent in smooth films. Excitation of specific photonic resonances allows for control of the magneto-optical interaction through metasurface design, opening up opportunities for various magneto-photonic applications.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Jipeng Wu, Rongzhou Zeng, Xueping Wu
Summary: In this paper, the authors theoretically study the Kerr effects induced by the TM and TE polarized waves illuminating on a bulk WSM. They find that the Kerr angles can be further enhanced at frequencies close to the ENZ frequency, and can be adjusted by altering the Fermi energy and tilt degree. Additionally, they demonstrate that the incident angle should be declined with the increase of WSM thickness to enable the further enhancement of the Kerr angle.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Multidisciplinary
Margherita Lembo, Massimiliano Lattanzi, Luca Pagano, Alessandro Gruppuso, Paolo Natoli, Francesco Forastieri
Summary: This study introduces a new formalism to describe the conversion between polarization states of radiation in the context of cosmology, known as the generalized Faraday effect (GFE). By applying this formalism to the cosmic microwave background (CMB) polarized anisotropy power spectra, the study provides insights into the potential implications of GFE on isotropy- and/or parity-violating physics. The research highlights the possibility of GFE inducing the conversion of linear polarization into circular polarization, and suggests observational bounds on GFE-induced CMB circularly polarized power spectrum.
PHYSICAL REVIEW LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Zimeng Hu, Gavin B. G. Stenning, Vladimir Koval, Jiyue Wu, Bin Yang, Alisa Leavesley, Richard Wylde, Michael John Reece, Chenglong Jia, Haixue Yan
Summary: In this study, single-phase SrFe12-xNbxO19 hexaferrite ceramics were prepared using the solid-state sintering method. The temperature dependence of dielectric parameters was investigated, revealing that Nb substitution can improve the magneto-optical behavior in the THz band and enhance the magnetic properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Optics
Ole Krarup, Chams Baker, Liang Chen, Xiaoyi Bao
Summary: This work presents an analytical model that accounts for the impact of optical polarization on the generation of frequency sidebands in a highly nonlinear fiber. The model enables a novel all-optical technique for detecting polarization changes with higher sensitivity.
Article
Multidisciplinary Sciences
H. Xu, J. R. Niu, P. Chen, K. J. Lee, W. W. Zhu, S. Dong, B. Zhang, J. C. Jiang, B. J. Wang, J. W. Xu, C. F. Zhang, H. Fu, A. Filippenko, E. W. Peng, D. J. Zhou, Y. K. Zhang, P. Wang, Y. Feng, Y. Li, T. G. Brink, D. Z. Li, W. Lu, Y. P. Yang, R. N. Caballero, C. Cai, M. Z. Chen, Z. G. Dai, S. G. Djorgovski, A. Esamdin, H. Q. Gan, P. Guhathakurta, J. L. Han, L. F. Hao, Y. X. Huang, P. Jiang, C. K. Li, D. Li, H. Li, X. Q. Li, Z. X. Li, Z. Y. Liu, R. Luo, Y. P. Men, C. H. Niu, W. X. Peng, L. Qian, L. M. Song, D. Stern, A. Stockton, J. H. Sun, F. Y. Wang, M. Wang, N. Wang, W. Y. Wang, X. F. Wu, S. Xiao, S. L. Xiong, Y. H. Xu, R. X. Xu, J. Yang, X. Yang, R. Yao, Q. B. Yi, Y. L. Yue, D. J. Yu, W. F. Yu, J. P. Yuan, B. B. Zhang, S. B. Zhang, S. N. Zhang, Y. Zhao, W. K. Zheng, Y. Zhu, J. H. Zou
Summary: This study reports the continuous observations of FRB 20201124A, revealing the irregular time variation and circular polarization of its radio bursts. These features provide evidence for the immediate environment around the source and its location in a low-stellar-density interarm region at the center of the galaxy. This finding is significant for understanding the origin of cosmological FRBs.
Article
Optics
Peijing Chen, Guiqing Hong, Shen Liu, Junlan Zhong, Wei Ding, Junxian Luo, Wenqi Yan, Hang Xiao, Yiping Wang
Summary: The paper presents a new fiber-optic vector magnetic field sensor using a FabryPerot interferometer, which consists of an optical fiber end face and a graphene/Au membrane suspended on the ceramic ferrule end face. By fabricating gold electrodes on the ceramic ferrule using femtosecond laser, electrical current can be transmitted to the membrane. The sensor exhibits magnetic field sensitivity of 5.71 pm/mT and 8.07 pm/mT in the range of 0 to 180 mT and 0 to -180 mT, respectively, showing great potential in weak magnetic field measurements.
Article
Materials Science, Ceramics
Shun Wang, Qiuling Chen
Summary: Nanocrystals doped transparent glasses or glass ceramics have shown promising tunable magnetic and magnetooptical performance. In this study, the Al2O3-induced in-situ crystallization of Gd3Al2Ga3O12 in tellurite glass was reported. The in-situ crystallization influenced the glass network structure, and resulted in the enhancement of Faraday rotation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Estefanio Kesto, Vincent Stenger, Andrea Pollick, Seth Nelson, Miguel Levy
Summary: This report outlines the fabrication and isolation characteristics of biasmagnet-free optical isolating waveguides operating at an optimal wavelength of 780 nm. The waveguides were formed using Bismuth-substituted iron garnet thin films grown by liquid phase epitaxy. Slab and ridge waveguides were produced, with commercially available polarizing fibers implemented for the Faraday isolation function. The fiber-to-fiber isolation performance reached up to 25 dB at 790 nm, with low loss attributed to fiber coupling and connector losses.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Qiuling Chen, Zhuangzhuang Li, Baoji Miao, Xinhai Zhang, Shouhua Zhang
Summary: This study utilized diamagnetic 5d(0) Ta5+ ions and Ta2O5 nanocrystals to enhance the thermal stability, optical properties, and Faraday rotation of glasses. Ta2O5 doping resulted in improved properties such as high glass transition temperature, large thermal stability, intense optical emission, excellent nonlinear refractive index, and giant Verdet constant in the glasses.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Review
Materials Science, Ceramics
Lixuan Zhang, Dianjun Hu, Ilya L. Snetkov, Stanislav Balabanov, Oleg Palashov, Jiang Li
Summary: In this review, the fabrication and properties of magneto-optical ceramics, including garnet, sesquioxide, and A(2)B(2)O(7) ceramics, are discussed. While some ceramics have shown applicable performance, further studies are needed for most of them. The research status, existing problems, and development trends of magneto-optical ceramics for isolators are also presented and discussed.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Physics, Applied
Nima Pourali, Kevon Alexander, Volker Hessel, Evgeny Rebrov
Summary: The study investigates the magneto-optical responses and potential tunability of a one-dimensional defected magnetized plasma photonic crystal in the mm-range wavelength region. It analyzes the impact of variables such as layer number, defect thickness, magnetic field intensity, and declination angle on transmittance, Faraday rotation, and ellipticity. The results demonstrate the ability to alter resonant modes frequency at multiple precision levels and show how the number of defect dielectric layers affects the resonance modes.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Applied
M. L. Meretska, F. H. B. Somhorst, M. Ossiander, Y. Hou, J. Moodera, F. Capasso
Summary: This paper reports on the magneto-optical properties of an electron beam evaporated EuS thin-film characterized at room temperature. The refractive index of EuS was measured using ellipsometry in the visible part of the spectrum. The dispersion curve of the Verdet constant was measured in the wavelength range between 600 and 800 nm. We fitted an analytical expression for the dispersion curve in the range of 663-785 nm. In addition, we find that the Verdet constant of thin-film EuS is one order of magnitude higher than the commonly used terbium gallium garnet crystal.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Siyuan Gao, Yasutomo Ota, Feng Tian, Tianji Liu, Satoshi Iwamoto
Summary: All-dielectric metasurfaces based on ferrimagnetic iron garnets show promise for ultra-compact magneto-optical (MO) devices, but their fine nanopatterning is difficult. It is important to evaluate the impact of fabrication imperfections on MO metasurface performance. In this study, we investigated the optical properties of a MO metasurface with structural imperfections, specifically the tilted side walls of cylindrical garnet disks. We found that tilting the side walls significantly degrades the MO response and light transmittance, but optimization of the refractive index of the material covering the upper half of the nanodisks can recover the performance.
