Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Ochiai Tetsuyuki"'
Autor:
Hainey Mel F., Mano Takaaki, Kasaya Takeshi, Ochiai Tetsuyuki, Osato Hirotaka, Watanabe Kazuhiro, Sugimoto Yoshimasa, Kawazu Takuya, Arai Yukinaga, Shigetou Akitsu, Miyazaki Hideki T.
Publikováno v:
Nanophotonics, Vol 9, Iss 16, Pp 4775-4784 (2020)
Two photodetectors for measuring transmission and two bulky, separated narrowband filters for picking a target gas absorption line and a non-absorbing reference from broadband emission are typically required for dual-band non-dispersive infrared (NDI
Externí odkaz:
https://doaj.org/article/f881265700654d77a4fb824a5cfa0234
Autor:
Hainey Mel F., Mano Takaaki, Kasaya Takeshi, Ochiai Tetsuyuki, Osato Hirotaka, Watanabe Kazuhiro, Sugimoto Yoshimasa, Kawazu Takuya, Arai Yukinaga, Shigetou Akitsu, Miyazaki Hideki T.
Publikováno v:
Nanophotonics, Vol 9, Iss 10, Pp 3373-3384 (2020)
The integration of quantum well infrared photodetectors with plasmonic cavities has allowed for demonstration of sensitive photodetectors in the mid-infrared up to room-temperature operating conditions. However, clear guidelines for optimizing device
Externí odkaz:
https://doaj.org/article/9972387d7954451990faa989c5658189
Autor:
Ochiai, Tetsuyuki
We present a detailed theoretical analysis of a peculiar generation of multiple bound states in the continuum (BICs) in two-dimensional periodic arrays of dielectric spheres. They emerge in high-symmetry lattices with the $C_{6v}$ and $C_{4v}$ point
Externí odkaz:
http://arxiv.org/abs/2404.16472
Autor:
Ochiai, Tetsuyuki
We propose a simple scheme of degenerate spontaneous parametric down-conversion (SPDC) in nonlinear metasurfaces or photonic crystal slabs with quasi-guided modes. It employs a band crossing between P- and S-polarized quasi-guided mode bands inside t
Externí odkaz:
http://arxiv.org/abs/2311.09669
Autor:
Ochiai, Tetsuyuki
We explore absorbing open-boundary modes in non-Hermitian photonic systems. The modes have a continuum spectrum in the infinite system-size limit and can exhibit the non-Hermitian skin effect. In contrast to the conventional non-Hermitian skin modes
Externí odkaz:
http://arxiv.org/abs/2209.00236
Autor:
Ochiai, Tetsuyuki
We present an electrostatic theory of the optical rectification, namely, the static photovoltage or photocurrent generation under a light illumination, in metallic particles. The hydrodynamical model for the charge carriers in the metals is employed.
Externí odkaz:
http://arxiv.org/abs/2111.02758
Akademický článek
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Autor:
Ochiai, Tetsuyuki
A network model that can describe light propagation in one-dimensional ring-resonator arrays with a dimer structure is studied as a Su-Schrieffer-Heeger-type Floquet network. The model can be regarded as a Floquet system without periodic driving and
Externí odkaz:
http://arxiv.org/abs/1811.11984
Autor:
Ochiai, Tetsuyuki
Publikováno v:
J. Opt. Soc. Am. B 35, 2642 (2018)
A hybrid computational method of plane-wave and cylindrical-wave expansions for distributed Bragg-reflector (DBR) pillars is proposed. The plane-wave expansion is employed to represent the one-dimensional periodic structure of the DBR. The cylindrica
Externí odkaz:
http://arxiv.org/abs/1810.01660
Autor:
Ochiai, Tetsuyuki
Publikováno v:
J. Opt. Soc. Am. B 34, 740 (2017)
We theoretically investigate the second harmonic generation and photon drag effect induced by an incident plane wave to a doped graphene placed on a two-dimensional diffraction grating. The relevant nonlinear conductivity of the graphene is obtained
Externí odkaz:
http://arxiv.org/abs/1810.01658