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Associate Professor, Research Institute of Electrical Communication, Tohoku University *Profile is at the time of the award.
2023Inamori Research GrantsScience & Engineering
I would like to proactively and challengingly explore new research fields, contribute to the development of humanity, and through this, continue to grow myself as well.
This research focused on developing magneto-optical nanostructures for spin-wave optical conversion devices toward the realization of charge-transport-free devices. We established epitaxial growth technology for Ce:YIG thin films on YAG substrates and developed a selective crystallization technique using vacuum laser annealing. Furthermore, we demonstrated angle-dependent magnetic bandgaps in two-dimensional magnonic crystals and established foundational technologies for chip-scale spin-wave optical conversion devices. These achievements are expected to find applications in next-generation optical communication devices.
Yuki Yoshihara, Kazushi Ishiyama et al. (2023) Growth of magnetooptical cerium-substituted yttrium iron garnet on yttrium aluminum garnet using ion beam sputtering Applied Physics Letters 123, 112404 doi:10.1063/5.0161296
Hibiki Miyashita, Yuki Yoshihara et al. (2023) Vacuum laser annealing of magnetooptical cerium-substituted yttrium iron garnet films Optical Materials 146 doi:10.1016/j.optmat.2023.114530
Kanta Mori, Takumi Koguchi et al. (2024) Orientation-dependent two-dimensional magnonic crystal modes in an ultralow-damping ferrimagnetic waveguide containing repositioned hexagonal lattices of Cu disks Physical Review Applied 21 doi:10.1103/PhysRevApplied.21.014061
Taichi Goto (2025) Development of Fabrication Technique for Microscopic Transparent Magnetic Materials Using Local Laser Heating : Toward Stable Integrated Optical Modules for High-Speed Data Communication Journal of Japan Laser Processing Society 32 (1), 37-39
Science & Engineering
