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J-GLOBAL ID：200901014020872950   Update date: Oct. 03, 2023

Unuma Takeya

ウヌマ タケヤ | Unuma Takeya
Affiliation and department：
Nagaoka University of Technology Graduate School of Engineering Department of Electrical,Electronics and Information Engineering

About Nagaoka University of Technology Graduate School of Engineering Department of Electrical,Electronics and Information Engineering


Job title： Associate Professor
Homepage URL  (1)： https://quantum.nagaokaut.ac.jp/
Research field  (3)： Semiconductors, optical and atomic physics ,  Electric/electronic material engineering ,  Applied materials
Research theme for competitive and other funds  (11)：
  • 2022 - 2025 有機系ナノコンポジット材料におけるバリスティック伝導の発現と制御
  • 2021 - 2024 半導体超格子の室温テラヘルツ利得における動的電子相関の解明と制御
  • 2020 - 2023 光誘起フレクソエレクトリック効果の超高速応答検出とメゾ視点からの分子運動解明
  • 2019 - 2022 有機半導体におけるバリスティック伝導の顕在化と分子的制御
  • 2017 - 2020 室温テラヘルツ利得をもつ半導体超格子の構造精巧化と外部共振器制御
Show all
Papers (38)：
  • Takeya Unuma, Oudai Maruyama, Kunio Yubuta, Takamasa Sugawara, Hideyuki Toyota, Ariyuki Kato. Polarization-resolved broadband dielectric properties of an undoped β-Ga2O3 (100) crystal in the visible to terahertz regions. Optical Materials Express. 2023. 13. 11. 3036-3044
  • Takeya Unuma. Generalized framework for the step response of semiconducting materials to optically switched electrical bias input in terahertz emission spectroscopy. Journal of the Optical Society of America B. 2023. 40. 7. 1703-1710
  • Takeya Unuma, Kosuke Ueda, Ryuichi Okamoto. Effects of initial three-dimensional electron energy distribution on terahertz Bloch oscillations in a biased semiconductor superlattice. Applied Physics Express. 2023. 16. 3. 031001-1-031001-4
  • Takeya Unuma, Ikuma Taga, Yuto Itagaki. Electronic states underlying peculiar Bloch oscillations in a biased semiconductor superlattice with interminiband mixing. Applied Physics Express. 2022. 15. 7. 071009-1-071009-4
  • Ryusei Momosaki, Moritsugu Sakamoto, Kohei Noda, Yasuhiro Tamayama, Tomoyuki Sasaki, Takeya Unuma, Takeya Sakai, Yukitoshi Hattori, Nobuhiro Kawatsuki, Hiroshi Ono. Theoretical determination of biaxial anisotropy suitable for reducing incident angle dependence of a high-efficiency polarization grating. Journal of the Optical Society of America B. 2022. 39. 7. 1964-1971
ｍore...
MISC (5)：
  • Unuma T., Kobayashi K., Yamamoto A., Yoshita M., Hirakawa K., Katsumoto S., Kanemitsu Y., Akiyama H. 19pPSB-24 Correspondence between intersubband absorption and electronic Raman scattering and dynamical many-body effects in GaAs quantum wells II. Meeting Abstracts of the Physical Society of Japan. 2007. 62. 0. 734-734
  • Unuma T., Kobayashi K., Yamamoto A., Hirakawa K., Sekine N., Yoshita M., Katsumoto S., Kanemitsu Y., Akiyama H. 27pXC-6 Correspondence between intersubband absorption and electronic Raman scattering and dynamical many-body effects in GaAs quantum wells. Meeting Abstracts of the Physical Society of Japan. 2006. 61. 0. 676-676
  • Unuma T., Kobayashi K., Yamamoto A., Yoshita M., Hashimoto Y., Katsumoto S., Iye Y., Kanemitsu Y., Akiyama H. 13pPSA-79 Intersubband excitations in quantum wells measured by infrared absorption and electronic Raman scattering spectroscopy III. Meeting Abstracts of the Physical Society of Japan. 2004. 59. 0. 674-674
  • Unuma T., Kobayashi K., Yamamoto A., Yoshita M., Hashimoto Y., Katsumoto S., Iye Y., Kanemitsu Y., Akiyama H. 28pPSB-8 Intersubband excitations by infrared absorption and electronic Raman scattering in quantum wells II. Meeting Abstracts of the Physical Society of Japan. 2004. 59. 0. 692-692
  • Unuma T., Akiyama H., Kobayashi K., Yamamoto A., Yoshita M., Baba M., Hashimoto Y., Katsumoto S., Iye Y., Kanemitsu Y. Intersubband excitations by infrared absorption and electronic Raman scattering in quantum wells. Meeting Abstracts of the Physical Society of Japan. 2003. 58. 0. 571-571
Books (1)：
  • テラヘルツ技術総覧 第8章4.1.2節「サブバンド間遷移」
    NGTコーポレーション 2007 ISBN:9784990371302
Lectures and oral presentations  (4)：
  • Terahertz complex conductivity of nanocellulose and other flexible transparent films controlled by the blending of conductive polymers
    (The Fourteenth Japan-Finland Joint Symposium on Optics in Engineering (OIE2023) 2023)
  • ナノ構造半導体・有機半導体における弱局在電子系のテラヘルツ応答
    (強光子場科学研究懇談会 講演会 2019)
  • Inversionless terahertz gain in semiconductor superlattices up to room temperature and above
    (The 9th International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW2018) 2018)
  • Room-temperature THz gain of biased semiconductor superlattices revealed by phase-sensitive measurements of Bloch oscillations
    (The Twelfth Japan-Finland Joint Symposium on Optics in Engineering (OIE'17) 2017)
Education (2)：
  • - 2005 The University of Tokyo Graduate School, Division of Science
  • - 2000 The University of Tokyo Faculty of Science
Professional career (1)：
  • 博士(理学) (東京大学)
Work history (3)：
  • 2014/11/01 - 現在 Nagaoka University of Technology
  • 2007/05/01 - 2014/10/31 Nagoya University
  • 2005/04/01 - 2007/04/30 日本学術振興会特別研究員(PD) 研究員
Committee career (1)：
  • 2008/11 - 2009/10 日本物理学会 領域4運営委員
Association Membership(s) (3)：
テラヘルツテクノロジーフォーラム ,  応用物理学会 ,  日本物理学会
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