24 citations · 40 across the 16 of their papers we have counts for
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High-Q Magneto-Optical Microdisk Resonators Based on Monocrystalline Bismuth-substituted Yttrium Iron Garnets
Takeru Yambe, Kota Taniguchi, Tatsuya Kitai +7
Microresonators based on diverse material platforms have driven the progress of integrated photonics by enhancing light-matter interactions in compact volumes. Extending this strat…
Photonic Crystal Defect Nanocavities Based on Monocrystalline Yttrium Iron Garnet
Kota Taniguchi, Siyuan Gao, Tatsuya Kitai +5
Monocrystalline yttrium iron garnet (YIG) is a key material for magneto optics and quantum magnonics owing to its high optical transparency, large magneto-optical (MO) effects at r…
Enhanced Third-Harmonic Generation in Diamond Photonic Crystal Slabs via Doubly Resonant Quasi-Bound States in the Continuum
Sangmin Ji, Satoshi Iwamoto, Hideki Gotoh
We propose and numerically demonstrate doubly resonant third-harmonic generation (THG) in a diamond photonic crystal (PhC) slab, in which the fundamental harmonic (FH) and the thir…
Arbitrary Polarization Generation in Magneto-optical Metasurfaces Enabled by Bound States in the Continuum
Siyuan Gao, Guangtai Lu, Satoshi Iwamoto +1
The generation of arbitrary polarization states of light is essential for optical communication and photonic information processing. Photonic crystal and metasurface platforms supp…
Quantum dot single photon source on SiN integrated with coupled crossover waveguides
Akinari Fujita, Hironobu Yoshimi, Natthajuks Pholsen +5
Hybrid integration of InAs/GaAs quantum dot (QD) single-photon sources (SPSs) is a promising approach for introducing quantum light into SiN photonic integrated circuits. However,…
BIC slow light waveguides based on interband coupling
Sae R. Endo, Yuta Tanimura, Takahiro Ito +5
Harnessing bound states in the continuum (BICs) for guiding light in leaky environments has unlocked new possibilities in photonic integrated circuits. BIC confinement enables low-…
Design of Ultrathin Faraday Rotators based on All-dielectric Magneto-optical Metasurfaces at the Telecommunication Band
Siyuan Gao, Tianji Liu, Satoshi Iwamoto +1
Magneto-optical (MO) interactions offer a direct route to nonreciprocal optical devices but are intrinsically weak in the optical domain, posing a major challenge in downsizing MO…
Experimental realization of wide-mode-area slow light modes in valley photonic crystal heterostructure waveguides
Chengkun Zhang, Guangtai Lu, Nattujuks Pholsen +2
We experimentally realized wide-mode-area slow-light modes in valley photonic crystals (VPhCs) heterostructure waveguides. The waveguides are fabricated on a silicon slab by insert…
Slow Light Waveguides based on Bound States in the Continuum
Yuta Tanimura, Yuki Ishii, Kenta Takata +4
The concept of bound states in the continuum (BIC) has been advancing light confinement technology in leaky environments. In this letter, we propose and numerically demonstrate a s…
Topological Laser in Anomalous Quadrupole Topological Phases
Guangtai Lu, Yasutomo Ota, Satoshi Iwamoto
Topological photonics shows considerable promise in revolutionizing photonic devices through the use of topological phases, leading to innovations like topological lasers that enha…
Wide-mode-area slow light waveguides in valley photonic crystal heterostructures
Chengkun Zhang, Yasutomo Ota, Satoshi Iwamoto
We designed slow-light waveguides with a wide mode area based on slab-type valley photonic crystal (VPhC) heterostructures which are composed of a graphene-like PhC sandwiched by t…
Efficient light couplers to topological slow light waveguides in valley photonic crystals
Hironobu Yoshimi, Takuto Yamaguchi, Satomi Ishida +2
We numerically and experimentally demonstrate efficient light couplers between topological slow light waveguides in valley photonic crystals (VPhCs) and wire waveguides. By numeric…
High-Q two-dimensional photonic crystal nanocavity on glass with an upper glass thin film
Ryusei Kawata, Akinari Fujita, Natthajuks Pholsen +2
We numerically analyze two-dimensional photonic crystal (PhC) nanocavities on glass with a thin glass film on top of the structure. We investigated a multi-step heterostructure GaA…
Giant optical rotation in a three-dimensional semiconductor chiral photonic crystal
S. Takahashi, A. Tandaechanurat, R. Igusa +4
Optical rotation is experimentally demonstrated in a semiconductor-based three-dimensional chiral photonic crystal (PhC) at a telecommunication wavelength. We design a rotationally…