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Shortening the free electron laser pulse by controlling the slippage effect

Research Project

Project/Area Number 18H03691
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 14:Plasma science and related fields
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Tanaka Takashi  国立研究開発法人理化学研究所, 放射光科学研究センター, グループディレクター (30321780)

Co-Investigator(Kenkyū-buntansha) 貴田 祐一郎  公益財団法人高輝度光科学研究センター, 光源基盤部門, 研究員 (70553486)
田中 義人  兵庫県立大学, 理学研究科, 教授 (80260222)
橋本 智  兵庫県立大学, 高度産業科学技術研究所, 准教授 (80285337)
金城 良太  国立研究開発法人理化学研究所, 放射光科学研究センター, 研究員 (50790862)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
Fiscal Year 2018: ¥30,550,000 (Direct Cost: ¥23,500,000、Indirect Cost: ¥7,050,000)
Keywords自由電子レーザー / 短パルスレーザー / コヒーレント放射 / アンジュレータ / 蓄積リング / 時間同期 / テーパーアンジュレータ / 放射光理論 / パルス制御
Outline of Final Research Achievements

The goal of this project is to experimentally demonstrate a new free electron laser (FEL) concept, which enables to shorten the FEL pulse length down to the theoretical lower limit, namely, to a single cycle pulse. Using a short-pulse laser with the wavelength of 800 nm and pulse length of 12 fs as seed light, we successfully generated coherent radiation with the wavelength of 400 nm, and achieved spectral broadening by applying a field gradient in the undulator. The pulse length of the coherent radiation evaluated by means of a cross-correlation technique was of the order of 100 fs, which is consistent with a theoretical prediction that takes into account the effects of the large dispersion in the transport line. The above experimental results strongly suggest the validity of the new FEL concept to realize the single-cycle FEL.

Academic Significance and Societal Importance of the Research Achievements

本研究課題で実証を目指した新たなFEL発振原理は、従来の原理では不可能な、単一サイクルFELを実現するための基本原理である。FELは、従来の光学レーザーでは不可能な波長領域をカバーするための重要な光源であるが、その短パルス化にはスリッページによるパルス伸長という根本的な問題が最大の障壁として存在していた。今回、上記原理を実験的に実証したことにより、FELにおける短パルス化、特にスリッページが律速となる究極的な条件における短パルス化の実現が視野に入ってきたことで、FELによる高出力アト秒パルスの生成や、それを光源として利用した新たな科学の展開が期待できる。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (19 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (12 results) (of which Int'l Joint Research: 2 results,  Invited: 9 results)

  • [Journal Article] Proposal to generate a pair of intense independently tunable attosecond pulses from undulator radiation2022

    • Author(s)
      Takashi Tanaka and Primoz Rebernik Ribic
    • Journal Title

      Optics Letters

      Volume: 47 Issue: 6 Pages: 1411-1414

    • DOI

      10.1364/ol.452357

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of an undulator with a variable magnetic field profile2021

    • Author(s)
      Takashi Tanaka, Yuichiro Kida, Ryota Kinjo, Tadashi Togashi, Hiromitsu Tomizawa, Satoshi Hashimoto, Shuji Miyamoto, Sumiyuki Okabe and Yoshihito Tanaka
    • Journal Title

      Journal of Synchrotron Radiation

      Volume: 28 Issue: 2 Pages: 404-409

    • DOI

      10.1107/s1600577521000989

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Isolated single-cycle extreme-ultraviolet pulses from undulator radiation2020

    • Author(s)
      Primoz Ribic and Takashi Tanaka
    • Journal Title

      Optics Letters

      Volume: 45 Issue: 18 Pages: 5234-5237

    • DOI

      10.1364/ol.401977

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Shortening the pulse duration in seeded free-electron lasers by chirped microbunching2019

    • Author(s)
      Takashi Tanaka and Primoz Ribic
    • Journal Title

      Optics Express

      Volume: 27 Issue: 21 Pages: 30785-30892

    • DOI

      10.1364/oe.27.030875

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Electron bunch compression with an optical laser2019

    • Author(s)
      Takashi Tanaka
    • Journal Title

      Phys. Rev. Accel. Beams

      Volume: 22 Issue: 11

    • DOI

      10.1103/physrevaccelbeams.22.110704

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Universal representation of undulator phase errors2018

    • Author(s)
      Tanaka Takashi
    • Journal Title

      Physical Review Accelerators and Beams

      Volume: 21 Issue: 11

    • DOI

      10.1103/physrevaccelbeams.21.110704

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Difference frequency generation in free electron lasers2018

    • Author(s)
      Tanaka Takashi
    • Journal Title

      Optics Letters

      Volume: 43 Issue: 18 Pages: 4485-4488

    • DOI

      10.1364/ol.43.004485

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] ニュースバルにおけるレーザーシーディング法を用いたコヒーレント短パルス光の発生2023

    • Author(s)
      田中義人
    • Organizer
      ニュースバルシンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 単一サイクルFEL原理実証用超短パルスレーザー光源の開発2022

    • Author(s)
      貴田 祐一郎
    • Organizer
      日本加速器学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Generation and Control of Attosecond Pulses2021

    • Author(s)
      Takashi Tanaka
    • Organizer
      Attosecond to Few-Femtosecond Ultrafast Science at Future FELs
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Generation of Short-Pulse FELs: Proposal2020

    • Author(s)
      Takashi Tanaka
    • Organizer
      Advanced FEL Technologies
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] アンジュレータ位相誤差の普遍的表式と系統的不整磁場への適用2019

    • Author(s)
      田中隆次
    • Organizer
      日本加速器学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 差周波FEL(自由電子レーザー)による新たな光源の可能性2019

    • Author(s)
      田中隆次
    • Organizer
      HiSOR研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] XFELを単一サイクル化する新たな原理と蓄積リングにおける実証計画2019

    • Author(s)
      田中隆次
    • Organizer
      PF研究会「高繰り返し極短パルス光源の未来」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] ニュースバルBL01 における単一サイクルFEL 原理実証計画2019

    • Author(s)
      田中隆次
    • Organizer
      ニュースバルシンポジウム2019
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 自由電子レーザーの短パルス化と将来展望2018

    • Author(s)
      田中隆次
    • Organizer
      第15回AMO討論会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] ニュースバルにおける単一サイクル自由電子レーザー原理実証実験計画2018

    • Author(s)
      田中隆次
    • Organizer
      第15回日本加速器学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] X線自由電子レーザーSACLAの短パルス化と将来展望2018

    • Author(s)
      田中隆次
    • Organizer
      第2回レーザー学会「ユビキタス・パワーレーザー」専門委員会、第2回科学技術交流財団「マイクロ固体フォトニクス」研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Infrared Synchrotron Radiation (IRSR) in Storage Rings: Limitations and New Possibilities2018

    • Author(s)
      Takashi Tanaka
    • Organizer
      SPring-8先端利用技術ワークショップ~強磁場中顕微赤外分光と高輝度放射光施設における赤外ビームラインの展望~
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2024-01-30  

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