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Mode-selective phonon excitation in the materials of energy functionality using mid-infrared free-electron laser

Research Project

Project/Area Number 18K05295
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionKyoto University

Principal Investigator

Hachiya Kan  京都大学, エネルギー科学研究科, 准教授 (90314252)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords自由電子レーザー / ラマン散乱 / 中赤外線 / フォノン
Outline of Final Research Achievements

We developed a new phonon spectroscopy to investigate thermal processes in solids, which is considered to work as a loss in wide range of energy production and storage. Free electron laser (FEL) light source was utilized as the tool to this method. With the wavelength-tunable mid-infrared FEL, any individual optical phonon mode is expected to be selected and optically excited in order to elucidate its role in the emergence of physical properties.
Single crystal diamond was chosen as a sample to scale up this method to include infrared inactive phonon mode excitation. We have succeeded in the selective excitation of the infrared-inactive mode in diamond. Nevertheless, red-shift of the mode, which results from surface damage induced by intense laser irradiation, occurred. In order to eliminate the damage and phonon red-shift, measurement system was fully updated. The improvement was successful, and the scale-up of the method was fulfilled.

Academic Significance and Societal Importance of the Research Achievements

近年、「フォノンエンジニアリングという概念が創生されるにともなって、ナノレベルでのフォノンの振る舞いから次世代メモリやパワー半導体のよりすぐれた特性、熱電素子のような直接熱制御の関わるデバイスの性能を、光エネルギー利用半導体における格子振動特性と合わせて、統一的に理解し、より革新的な材料開発に生かそうとする流れが生まれている。本研究では、中赤外自由電子レーザー光源を利用した新しいフォノン分光の確立を目指すことにより、FEL励起による選択的モード励起がエネルギー現象における重要な諸物性の発現メカニズムの解明へ応用可能であることが、学術的・社会的意義である。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (10 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Raman Spectroscopy for Determination of Silicon Oxyfluoride Structure in Fluoride Melts2020

    • Author(s)
      Yuta Suzuki, Taebyung Park, Kan Hachiya, Takuya Goto
    • Journal Title

      Journal of Fluorine Chemistry

      Volume: 238 Pages: 109616-109616

    • DOI

      10.1016/j.jfluchem.2020.109616

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two-photon selective excitation of phonon-mode in diamond using mid-infrared free-electron laser2020

    • Author(s)
      Oji Sato, Kyohei Yoshida, Heishun Zen, Kan Hachiya, Takuya Goto, Takashi Sagawa, Hideaki Ohgaki
    • Journal Title

      Physics Letters A

      Volume: 384 Issue: 10 Pages: 126223-126223

    • DOI

      10.1016/j.physleta.2019.126223

    • NAID

      120006840125

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Mode-Selective Phonon Excitation of SrTiO3 by MIR-FEL with Anti-Stokes Hyper Raman Scattering Spectroscopy2021

    • Author(s)
      Ju Yoon Hnin Bo, H. Zen, H. Ohgaki, R. Akasegawa, K. Hachiya, K. Yoshida
    • Organizer
      The 46th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-Thz 2021)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mode-selective phonon excitation in semiconductors of energy functionality with mid-infrared free-electron laser2020

    • Author(s)
      Kan HACHIYA, Rei AKASEGAWA, Kyohei YOSHIDA, Heishun ZEN, Takashi SAGAWA, Hideaki OHGAKI
    • Organizer
      The 11th International Symposium of Advanced Energy Science
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Selective excitation of infrared inactive lattice vibrational mode by mid-infrared free electron laser2020

    • Author(s)
      Rei Akasegawa, Oji Sato, Kyohei Yoshida, Heishun Zen, Kan Hachiya, Takuya Goto, Takashi Sagawa, Hideki Ohgaki
    • Organizer
      The 4th Zhejiang-Kyoto-Ajou Joint Symposium on Energy Science
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中赤外自由電子レーザーによるダイヤモンドにおける選択的格子振動励起の実証2020

    • Author(s)
      赤瀬川怜・佐藤央至・吉田恭平・全炳俊・蜂谷寛・後藤琢也・佐川尚・大垣英明
    • Organizer
      応用物理学会関西支部 2019年度第3回支部講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 中赤外自由電子レーザーによる赤外不活性フォノンモードの選択励起2020

    • Author(s)
      赤瀬川怜, 吉田恭平, 全炳俊, 蜂谷寛, 後藤琢也, 佐川尚, 大垣英明
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Mode-selective phonon excitation in semiconductors of energy functionality with mid-infrared free-electron laser2019

    • Author(s)
      Kan HACHIYA, Rei AKASEGAWA, Kyohei YOSHIDA, Heishun ZEN, Takashi SAGAWA, Hideaki OHGAKI
    • Organizer
      The 10th International Symposium of Advanced Energy Science
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of the energy functionality through selective phonon- mode excitation by mid-infrared free-electron laser2018

    • Author(s)
      Kan HACHIYA, Yusuke SAKAI, Oji SATO, Ryoji YAMADA, Kyohei YOSHIDA, Heishun ZEN, Takashi SAGAWA, Hideaki OHGAKI
    • Organizer
      The 9th International Symposium of Advanced Energy Science ~Interplay for Zero-Emission Energy~
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 中赤外自由電子レーザーによるダイヤモンドにおける選択的格子振動励起2018

    • Author(s)
      佐藤央至,吉田恭平,全 炳俊,蜂谷 寛, 後藤琢也,佐川 尚,大垣英明
    • Organizer
      日本物理学会 2018 年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 中赤外自由電子レーザーによるペロブスカイト型結晶における選択的格子振動励起2018

    • Author(s)
      山田凌司, 酒井佑輔, 吉田恭平, 全 炳俊, 蜂谷 寛, 後藤琢也, 佐川 尚, 大垣英明
    • Organizer
      日本物理学会 2018 年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 中赤外自由電子レーザーによるダイヤモンドにおける選択的格子振動励起2018

    • Author(s)
      佐藤央至,吉田恭平,全 炳俊,蜂谷 寛, 後藤琢也,佐川 尚,大垣英明
    • Organizer
      第63回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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