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Light source development for sub-cycle time-resolved spectroscopy using terahertz waves and X-ray pulses

Research Project

Project/Area Number 22K14620
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 30020:Optical engineering and photon science-related
Research InstitutionUniversity of Hyogo

Principal Investigator

Kaneshima Keisuke  兵庫県立大学, 理学研究科, 助教 (30804025)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords放射光 / ファイバーレーザー / テラヘルツ波 / 時間分解分光 / レーザー / X線
Outline of Research at the Start

超短パルス光の生成・制御・応用に関する技術は、物質の量子状態やそのダイナミクスを知り、それらを制御するために欠かせない技術となっている。本研究では、超短パルス光源であるレーザーと放射光の強みを組み合わせ、それぞれの限界を打破した「サブサイクル時間分解X線分光」の実現を目指した装置開発を行う。これにより「光電場と電子との相互作用から始まる物質中の相互作用、特にその初期過程を、正確に理解し、精密に制御できるか」という学術的問いに答えることを目的とする。

Outline of Final Research Achievements

The objective of this research is to develop a fiber laser system that can synchronize with synchrotron X-ray pulses and use it to generate terahertz waves. This will enable time-resolved spectroscopy combining X-rays with near-infrared light and X-rays with terahertz waves.
The research involved developing a compact, portable ultrashort pulse femtosecond fiber laser system (pulse width 35 fs) and a timing synchronization system with synchrotron radiation. The performance of this system was evaluated following actual synchronization with synchrotron radiation. These results were published in the Journal of Synchrotron Radiation. Additionally, the generation and evaluation of terahertz waves using this system were successful, and the findings will be published soon.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発したファイバーレーザーシステムおよびタイミング同期電子回路は,コンパクトで持ち運び可能な設計となっている.これにより,レーザーのパラメータ調整やアラインメントを事前に行った状態で,放射光施設に持ち込むことが可能となる.本システムを使用することで,従来よりも容易に放射光X線を用いた時間分解分光を実現できる.この技術は,X線を用いた時間分解分光の学術的・産業的応用において,大きな意義を持つ.

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (5 results)

All 2024 2022 Other

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

  • [Journal Article] Development of a portable and cost-effective femtosecond fibre laser synchronizable with synchrotron X-ray pulses2024

    • Author(s)
      Kaneshima Keisuke、Kyoda Takumi、Sugeta Shuta、Tanaka Yoshihito
    • Journal Title

      Journal of Synchrotron Radiation

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dispersion measurement of an objective lens for ultrafast microscopy2022

    • Author(s)
      Keisuke Kaneshima, Takumi Minami, Takumi Kyoda, Yoshihito Tanaka
    • Journal Title

      Optics Continuum

      Volume: 1 Issue: 9 Pages: 1939-1945

    • DOI

      10.1364/optcon.453567

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Portable femtosecond fiber laser system synchronizable with synchrotron X-ray pulse2024

    • Author(s)
      Kyoda Takumi、Sugeta Shuta、Tanaka Yoshihito、Kaneshima Keisuke
    • Organizer
      The 13th Advanced Lasers and Photon Sources (ALPS2024)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 兵庫県立大学研究者情報

    • URL

      https://cv01.ufinity.jp/u_hyogo/index.php?action=pages_view_main&active_action=cvclient_view_main_init&cvid=kaneshima&display_type=cv&block_id=216#_216

    • Related Report
      2022 Research-status Report
  • [Remarks] 研究者webサイト

    • URL

      https://kaneshima.info/

    • Related Report
      2022 Research-status Report

URL: 

Published: 2022-04-19   Modified: 2025-01-30  

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