Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Miyamaru, Fumiaki"'
Since the latter half of the 20th century, the use of metal in optics has become a promising plasmonics field for controlling light at a deep subwavelength scale. Surface plasmon polaritons localized on metal surfaces are crucial in plasmonics. Howev
Externí odkaz:
http://arxiv.org/abs/2210.13637
Autor:
Takano Keisuke, Uchiyama Satoko, Nagase Shintaro, Tsuchimoto Yuka, Nakanishi Toshihiro, Nakata Yosuke, Pérez-Urquizo Joel, Madéo Julien, Dani Keshav M., Miyamaru Fumiaki
Publikováno v:
Nanophotonics, Vol 13, Iss 17, Pp 3077-3089 (2024)
In this study, the frequency down-conversion of terahertz waves is analytically and experimentally demonstrated at the temporal boundaries within a GaAs waveguide. The temporal boundary is established by photoexciting the top surface of the waveguide
Externí odkaz:
https://doaj.org/article/3eafc2ff6e504c9ca940821eabd06476
Autor:
Kobachi, Mitsuki, Miyamaru, Fumiaki, Nakanishi, Toshihiro, Okimura, Kunio, Sanada, Atsushi, Nakata, Yosuke
Publikováno v:
Adv. Opt. Mater. 10, 2101615 (2022)
Terahertz chiral sensing and polarization-multiplexing communication demand subwavelength devices that dynamically invert polarization helicity. Metasurfaces can enhance anisotropy and fine tunability at subwavelength scales for this purpose. Althoug
Externí odkaz:
http://arxiv.org/abs/2106.12932
Akademický článek
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Autor:
Nakata, Yosuke, Fukawa, Kai, Nakanishi, Toshihiro, Urade, Yoshiro, Okimura, Kunio, Miyamaru, Fumiaki
Publikováno v:
Phys. Rev. Applied 11, 044008 (2019)
Dynamic helicity switching by utilizing metasurfaces is challenging because it requires deep modulation of polarization states. To realize such helicity switching, this paper proposes a dynamic metasurface functioning as a switchable quarter-wave pla
Externí odkaz:
http://arxiv.org/abs/1805.10034
Autor:
Takano, Keisuke, Tanaka, Yoku, Moreno, Gabriel, Chahadih, Abdallah, Ghaddar, Abbas, Han, Xiang-Lei, Vaurette, François, Nakata, Yosuke, Miyamaru, Fumiaki, Nakajima, Makoto, Hangyo, Masanori, Akalin, Tahsin
Publikováno v:
Journal of Applied Physics, 122, 063101 (2017)
The design of a self-complementary metallic checkerboard pattern achieves broadband, dispersion-less, and maximized absorption, concentrating in the deep subwavelength resistive connections between squares, without any theoretical limitation on the e
Externí odkaz:
http://arxiv.org/abs/1708.03107
Publikováno v:
Opt. Express 25, 2107-2114 (2017)
We designed a cut-wire-pair metasurface that works as a transparent terahertz half-wave plate, by matching the electric and magnetic resonances of the structure. Due to the impedance matching nature of the resonances, a large transmission phase shift
Externí odkaz:
http://arxiv.org/abs/1701.08346
Publikováno v:
Appl. Phys. Express 9 012201 (2016)
We studied the transmission characteristics of a planar metamaterial consisting of an array of electric split-ring resonators (eSRRs) with double periodicity. Because of coupling between different resonant modes induced by different lattice periods i
Externí odkaz:
http://arxiv.org/abs/1612.03552
Autor:
Urade Yoshiro, Fukawa Kai, Miyamaru Fumiaki, Okimura Kunio, Nakanishi Toshihiro, Nakata Yosuke
Publikováno v:
Nanophotonics, Vol 11, Iss 9, Pp 2057-2064 (2022)
Dynamic inversion of the planar-chiral responses of a metasurface is experimentally demonstrated in the terahertz regime. To realize this inversion, the critical transition of the checkerboard-like metallic structures is used. Resonant structures wit
Externí odkaz:
https://doaj.org/article/c9a137f45f614947b36851734bb97099
Akademický článek
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