Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Yuma Takida"'
Publikováno v:
Science and Technology of Advanced Materials, Vol 23, Iss 1, Pp 424-433 (2022)
Owing to their high thermal and optical performances, carbon nanotube (CNT) films are used in various photo-thermo-electric (PTE) applications, such as terahertz (THz) sensing and energy harvesting. To improve the performance of PTE devices, a device
Externí odkaz:
https://doaj.org/article/18d0ea773c284520aa500adf27bfc507
Autor:
Koichi Tamura, Chao Tang, Daichi Ogiura, Kento Suwa, Hirokazu Fukidome, Yuma Takida, Hiroaki Minamide, Tetsuya Suemitsu, Taiichi Otsuji, Akira Satou
Publikováno v:
APL Photonics, Vol 7, Iss 12, Pp 126101-126101-10 (2022)
We designed and fabricated an epitaxial-graphene-channel field-effect transistor (EG-FET) featuring an asymmetric dual-grating-gate (ADGG) structure working as a current-driven terahertz detector and experimentally demonstrated a 10 ps-order fast res
Externí odkaz:
https://doaj.org/article/cac1ab75133a47f1921faa44ddc2e146
Publikováno v:
APL Photonics, Vol 5, Iss 6, Pp 061301-061301-5 (2020)
Engineered quasi-phase-matching in a periodically poled nonlinear crystal has enabled backward optical parametric oscillators, where a pump photon is down-converted to counterpropagating signal and idler photons without an optical cavity. Here, we de
Externí odkaz:
https://doaj.org/article/c938216e736f48918fb7e8b6dfe0bdec
Publikováno v:
AIP Advances, Vol 7, Iss 3, Pp 035020-035020-5 (2017)
We report a terahertz (THz)-wave differential detection based on simultaneous dual-wavelength up-conversion in a nonlinear optical MgO:LiNbO3 crystal with optical and electronic THz-wave sources. The broadband parametric gain and noncollinear phase-m
Externí odkaz:
https://doaj.org/article/b57e12d46c38440e9adef39063fab5ae
Autor:
Changhao Hu, Yuye Wang, Kai Chen, Chao Yan, Degang Xu, Yuma Takida, Hiroaki Minamide, Jianquan Yao
Publikováno v:
Infrared, Millimeter-Wave, and Terahertz Technologies IX.
Publikováno v:
Optics express. 30(11)
Planar diffractive lenses, with metamaterial artificial structures and subwavelength thickness, provide unique and flexible platforms for optical design in the terahertz (THz) regime. Here, we present a metamaterial-based Rayleigh-Wood Fresnel-zone-p
Publikováno v:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
Publikováno v:
Terahertz Photonics II.
Publikováno v:
Conference on Lasers and Electro-Optics.
We characterized a temporal profile of sub-nanosecond terahertz (THz)-wave pulses from an injection-seeded THz-wave parametric generator by using an optical up-conversion-based cross-correlation in a MgO-doped lithium niobate crystal.
Autor:
Yuye Wang, Changhao Hu, Chao Yan, Kai Chen, Yuma Takida, Hiroaki Minamide, Degang Xu, Jianquan Yao
Publikováno v:
Optics Letters. 47:5853
In this Letter, we demonstrate a highly sensitive multi-stage terahertz (THz) wave parametric upconversion detector based on a KTiOPO4 (KTP) crystal pumped by a 1064-nm pulsed-laser (10 ns, 10 Hz). The THz wave was upconverted to near-infrared light