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Dynamic Hydrogen Isotope Transfer Phenomena by Mid-Infrared Laser Spectroscopy

Research Project

Project/Area Number 18H01204
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 14020:Nuclear fusion-related
Research InstitutionNational Institute for Fusion Science

Principal Investigator

Yasuhara Ryo  核融合科学研究所, ヘリカル研究部, 准教授 (30394290)

Co-Investigator(Kenkyū-buntansha) 田中 将裕  核融合科学研究所, ヘリカル研究部, 准教授 (00435520)
赤田 尚史  弘前大学, 被ばく医療総合研究所, 教授 (10715478)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2018: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Keywords中赤外レーザー / 水素同位体 / エルビウムレーザー / 量子カスケードレーザー / 重水 / 軽水 / 中赤外分光 / 中赤外レーザー分光 / リモート検出 / 分光計測 / FTIR / Er:YAP / 分光 / 水同位体
Outline of Final Research Achievements

Using the significant absorption with different peaks for each isotope caused by the vibrational contracting mode of hydroxyl groups, when infrared laser light is irradiated on a material surface or in an atmosphere, the light intensity decays at a wavelength corresponding to the hydrogen isotope species. We constructed a hydrogen isotope measurement system using a laser source with two different wavelengths, 2.9micro meter and 3.9micro meter, matching the absorption peaks of water and heavy water and demonstrated the proof of principle of the measurement system using a mid-infrared laser.

Academic Significance and Societal Importance of the Research Achievements

水同位体の移動拡散現象の解明は、核融合分野を始めとして多くの分野で重要な課題である。しかしながら、これまでの質量分析装置や分光装置などの閉空間で行う、固定的な計測では、環境中(例えば空間や物質表面)の動的な移動現象は観測できなかった。この課題を、本グループが取り組んできた中赤外固体レーザーと水素同位体定量研究の知見を基にして、その場計測可能なシステム開発に成功した。今後、地球科学や核融合工学等多くの分野での活用が期待できる。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (14 results)

All 2022 2021 2020 2019

All Journal Article (12 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 12 results,  Open Access: 11 results) Presentation (2 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Preliminary Results of H2O and D 2O Real-Time Measurement Using Mid-IR Lasers with a Wavelength of 2.9 μm and 3.9 μm2022

    • Author(s)
      Hiroki KAWASE, Hiyori UEHARA, Ryo YASUHARA
    • Journal Title

      Plasma and Fusion Research

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Wavelength dependence of the Verdet constant in synthetic quartz glass for deep-ultraviolet light sources2021

    • Author(s)
      Yuki Tamaru, Hengjun Chen, Atsushi Fuchimukai, Hiyori Uehara, Taisuke Miura, and Ryo Yasuhara
    • Journal Title

      Optical Materials Express

      Volume: Vol. 11 Issue: 3 Pages: 814-820

    • DOI

      10.1364/ome.412395

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Efficient diode-pumped Er:YAP master-oscillator power-amplifier system for laser power improvement at 2920nm2021

    • Author(s)
      Weichao Yao, Enhao Li, Hiyori Uehara, and Ryo Yasuhara
    • Journal Title

      Optics Express

      Volume: Vol. 29 Issue: 16 Pages: 24606-24613

    • DOI

      10.1364/oe.429984

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Electro-optically Q-switched operation of a high-peak-power Tb:LiYF4 green laser2021

    • Author(s)
      H. Yang, H. Chen, E. Li, H. Uehara, and R. Yasuhara
    • Journal Title

      Optics Express

      Volume: Vol. 29 Issue: 20 Pages: 31706-31713

    • DOI

      10.1364/oe.434010

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High-efficiency, continuous-wave Fe:ZnSe mid-IR laser end pumped by an Er:YAP laser2021

    • Author(s)
      Enhao Li, Hiyori Uehara, Weichao Yao, Shigeki Tokita, Fedor Potemkin, and Ryo Yasuhara
    • Journal Title

      Optics Express

      Volume: Vol. 29 Issue: 26 Pages: 44118-44128

    • DOI

      10.1364/oe.444625

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spectroscopic properties of Er:BZMT ceramics for laser emission2020

    • Author(s)
      Weichao Yao, Hengjun Chen, Hiyori Uehara, and Ryo Yasuhara
    • Journal Title

      Optical Materials Express

      Volume: 10 Issue: 12 Pages: 3226-3234

    • DOI

      10.1364/ome.408858

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dy-doped Y2O3 transparent ceramics as a mid-infrared laser medium and saturable absorber2020

    • Author(s)
      Ryo Yasuhara, Hiyori Uehara, Weichao Yao, Hengjun Chen, Shigeki Tokita, and Hiroaki Furuse
    • Journal Title

      Optical Materials Express

      Volume: 10 Issue: 11 Pages: 2998-3006

    • DOI

      10.1364/ome.409848

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Highly efficient Er:YAP laser with 6.9 W of output power at 2920 nm2020

    • Author(s)
      Weichao Yao, Hiyori Uehara, Hiroki Kawase, Hengjun Chen, and Ryo Yasuhara
    • Journal Title

      Optics Express

      Volume: 28 Issue: 13 Pages: 19000-19007

    • DOI

      10.1364/oe.395802

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dy-doped CaF2 transparent ceramics as a functional medium in the broadband mid-infrared spectral region2020

    • Author(s)
      Hiyori Uehara, Weichao Yao, Akio Ikesue, Hiroyuki Noto, Hengjun Chen, Yoshimitsu Hishinuma, Takeo Muroga, and Ryo Yasuhara
    • Journal Title

      OSA Continuum

      Volume: 3 Issue: 7 Pages: 1811-1818

    • DOI

      10.1364/osac.398079

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Passively Q-switched 2.9 μm Er:YAP single crystal laser using graphene saturable absorber2019

    • Author(s)
      Hiroki Kawase, Hiyori Uehara, Hengjun Chen, Ryo Yasuhara
    • Journal Title

      Applied Physics Express

      Volume: 12 Issue: 10 Pages: 102006-102006

    • DOI

      10.7567/1882-0786/ab3e61

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magneto-optic pyrochlore ceramics of Tb2Hf2O7 for Faraday rotator2019

    • Author(s)
      Ryo Yasuhara and Akio Ikesue
    • Journal Title

      Optics Express

      Volume: 27 Issue: 5 Pages: 7485-7490

    • DOI

      10.1364/oe.27.007485

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 2.92um high-efficiency continuous-wave laser operation of diode-pumped Er:YAP crystal at room temperature2019

    • Author(s)
      Hiroki Kawase and Ryo Yasuhara
    • Journal Title

      Optics Express

      Volume: 27 Issue: 9 Pages: 12213-12220

    • DOI

      10.1364/oe.27.012213

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Terbium Aluminum Garnet Ceramics for the Optical Isolator in Ultra-High Power Lasers2020

    • Author(s)
      Ryo Yasuhara
    • Organizer
      Advanced Solid State Lasers
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High efficient mid-infrared Er:YAP laser2019

    • Author(s)
      Ryo Yasuhara
    • Organizer
      Seminar on Mid-Infrared Laser Technology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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