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Proposal and proof-of-principle demonstration of an innovative all-in-one terahertz source using semiconductor nanophotonics materials

Research Project

Project/Area Number 20K21005
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 21:Electrical and electronic engineering and related fields
Research InstitutionWakayama University

Principal Investigator

Ozaki Nobuhiko  和歌山大学, システム工学部, 教授 (30344873)

Co-Investigator(Kenkyū-buntansha) 池田 直樹  国立研究開発法人物質・材料研究機構, 技術開発・共用部門, 主任エンジニア (10415771)
小田 久哉  公立千歳科学技術大学, 理工学部, 准教授 (60405701)
Project Period (FY) 2020-07-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywordsフォトニック結晶導波路 / テラヘルツ波源 / 差周波発生 / 量子ドット / フォトニック結晶 / テラヘルツ波
Outline of Research at the Start

本研究は、半導体ナノフォトニクス材料であるフォトニック結晶および量子ドットを用いた高効率なテラヘルツ波発生源の提案と、その原理実証を目的とする。具体的には、光分散関係を最適化したフォトニック結晶導波路内に広帯域発光を示す量子ドットを埋め込み、量子ドットから導波路内を伝搬する2波長光の差周波発生による波長可変テラヘルツ波源の実現を目指す。この手法の有効性が実証されれば、外部励起光不要の超小型オールインワンテラヘルツ波源の開発に繋がり、画期的な応用展開が期待される。

Outline of Final Research Achievements

In this study, an ultra-small terahertz (THz) source was proposed based on semiconductor photonic crystal waveguides (PhC-WGs) with highly efficient difference frequency generation (DFG), and a proof-of-principle demonstration was performed. The structurally optimized PhC-WG provided a waveguide mode with low-group-velocity and low-dispersion (LVLD) for two introduced fundamental lights; thus, the electric fields of the lights were enhanced, and a phase matching between them was achieved. Numerical simulations indicated that the DFG intensity was enhanced by more than two orders of magnitude compared with that of the bulk material in the range of approximately 0.5-2 THz. The possibility of an ultra-compact all-in-one THz wave source using an integrated PhC-WG heterostructure was also demonstrated, including the fundamental light sources formed in two PhC-WGs connected to the LVLD PhC-WG.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、ナノフォトニクス材料を利用した高効率テラヘルツ(THz)波源開発の可能性が示された。この結果は、THzギャップを埋める新たなTHz波源の提供につながる意義ある成果といえる。既存光源を凌駕する超小型THz波源を半導体材料によって提供できるため、モバイル端末やウェアラブル端末など他の半導体デバイスとの融合による新たなTHz技術の応用展開も期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (11 results)

All 2024 2023 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results) Presentation (6 results) (of which Int'l Joint Research: 1 results) Book (1 results)

  • [Journal Article] Proposal and numerical verification of an ultrasmall terahertz source using integrated photonic crystal waveguides for highly efficient differential frequency generation2023

    • Author(s)
      Koyama Yota、Oda Hisaya、Ikeda Naoki、Sugimoto Yoshimasa、Ozaki Nobuhiko
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Issue: SG Pages: SG1033-SG1033

    • DOI

      10.35848/1347-4065/acc18d

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Broadband optical wavelength conversion through four-wave mixing in W3-type AlGaAs photonic crystal waveguides2023

    • Author(s)
      Oda Hisaya、Hosokawa Youhei、Hayashi Kazuki、Ozaki Nobuhiko、Ikeda Naoki、Sugimoto Yoshimasa
    • Journal Title

      Applied Physics Express

      Volume: 16 Issue: 2 Pages: 022004-022004

    • DOI

      10.35848/1882-0786/acba7c

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Near-infrared dual-wavelength surface-emitting light source using InAs quantum dots resonant with vertical cavity modes2022

    • Author(s)
      Oshima Jin、Ozaki Nobuhiko、Oda Hisaya、Watanabe Eiichiro、Ohsato Hirotaka、Ikeda Naoki、Sugimoto Yoshimasa、Hogg Richard A.
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: SD Pages: SD1003-SD1003

    • DOI

      10.35848/1347-4065/ac5b24

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical investigation of highly efficient and tunable terahertz-wave generation using a low-group-velocity and low-dispersion two-dimensional GaAs photonic crystal waveguide2020

    • Author(s)
      Nakahama Teruyuki、Ozaki Nobuhiko、Oda Hisaya、Ikeda Naoki、Sugimoto Yoshimasa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: 9 Pages: 090903-090903

    • DOI

      10.35848/1347-4065/abaa93

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 低群速度低分散フォトニック結晶導波路の広帯域化に向けた構造探索2023

    • Author(s)
      小田 奈菜穂, 小山 陽太, 尾崎 信彦
    • Organizer
      応用物理学会関西支部2023年度第2回講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] フォトニック結晶を利用した高効率差周波発生と超小型テラヘルツ波源への応用2023

    • Author(s)
      尾崎 信彦
    • Organizer
      大阪公立大学・和歌山大学 第10回工学研究シーズ合同発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 高効率テラヘルツ波発生へ向けた低群速度・低分散フォトニック結晶導波路のヘテロ接合モデル(II)2023

    • Author(s)
      小山 陽太、小田 久哉、池田 直樹、杉本 喜正、尾崎 信彦
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Integrated heterostructure of photonic crystal waveguides for ultra-small terahertz source applications2022

    • Author(s)
      Yota Koyama, Hisaya Oda, Naoki Ikeda, Yoshimasa Sugimoto, and Nobuhiko Ozaki
    • Organizer
      35th International Microprocesses and Nanotechnology Conference (MNC 2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高効率テラヘルツ波発生へ向けた低群速度・低分散フォトニック結晶導波路のヘテロ接合モデル2022

    • Author(s)
      小山 陽太、尾崎 信彦、小田 久哉、池田 直樹、杉本 喜正
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] ヘテロ接合型低群速度・低分散フォトニック結晶導波路を用いた高効率テラヘルツ波発生の検討2021

    • Author(s)
      小山 陽太、尾崎 信彦、小田 久哉、池田 直樹、杉本 喜正
    • Organizer
      応用物理学会関西支部2021年度第2回講演会
    • Related Report
      2021 Research-status Report
  • [Book] テラヘルツ波の発生、検出、制御技術と応用展開2024

    • Author(s)
      尾崎信彦、小田久哉
    • Publisher
      技術情報協会
    • Related Report
      2023 Annual Research Report

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Published: 2020-08-03   Modified: 2025-01-30  

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