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Slitless time-resolved ARPES

Research Project

Project/Area Number 19KK0350
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))

Allocation TypeMulti-year Fund
Review Section Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
Research InstitutionThe University of Tokyo

Principal Investigator

Ishida Yukiaki  東京大学, 大学院理学系研究科(理学部), 特任講師 (30442924)

Project Period (FY) 2020 – 2022
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Keywords角度分解光電子分光 / 仕事関数 / ファイバーレーザー / 表面第2高調波 / 光電子分光法 / フェムト秒域ファイバーレーザー / 表面第2高調波 / 時間分解光電子分光 / レーザー高調波 / 第二高調波発生 / 超高速現象 / 円二色性 / 光電子分光 / レーザー
Outline of Research at the Start

2015年頃に光電子分析器に技術革命がおきた。従来の分析器によって一度に取り込める光電子はせいぜい1次元のスリットに入射するものであったが、このスリットないしその概念がなくなったものが登場し、2次元の立体角に放出される光電子を一度に取り込むことが可能となった。このスリットレス分析器にレーザー光源を組み込むことで、新しい時間分解光電子分光装置を建設する。スリットレス化によって初めて可能となる非線形光電子現象の探索や超高速非平衡現象の精査を実現する。

Outline of Final Research Achievements

In the ISSP-CCES Joint Research lab located at Seoul National University, we achieved the followings: (1) Two time-resolved ARPES systems developed at ISSP were transferred to the Joint-Research lab; (2) We succeeded in developing a compact femto-fiber laser system that operates in an ordinary laboratory environment; thereby we docket the laser system to a slitless photoelectron analyze and demonstrated a new method by which work function can be measured with a precision better than 1-2 orders of magnitude than conventional methods; (3) By utilizing a slitless analyzer and circularly-polarized laser harmonics, we investigated the circular dichroism in the photoelectron solid angular distribution, and formulated the pattern classification. (4) We developed a compact second harmonic generation detector and observed some novel first-order structural transition occurring in a transition-metal chalcogenide; (4) We developed a compact 1 MHz femto-fiber laser system that operates on a hand.

Academic Significance and Societal Importance of the Research Achievements

本課題で得られた成果は、超高速分光学、レーザー技術、材料科学の領域に渡って意義をもち、ISSP-CCESの共同ラボにおけるさらなる国際共同研究を促進する。本研究期間中に開発した小型で汎用性のあるフェムト秒域パルスレーザー光源や装置は、光電子分光に限らず様々な科学・技術分野で進歩とイノベーションを推進すると期待される。

Report

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

    (7 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Remarks (1 results)

  • [Int'l Joint Research] IBS-CCES(韓国)2020

    • Related Report
      2022 Annual Research Report
  • [Journal Article] A new category of “Aha!” driven by touch: A grip sensation into the directional seam on a baseball2023

    • Author(s)
      Yukiaki Ishida
    • Journal Title

      i-Perception

      Volume: 14 Issue: 3 Pages: 1-10

    • DOI

      10.1177/20416695231175598

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrafast probes of photovoltage and two-dimensional electron gas in the topological insulator Bi2Te3 by angle-resolved photoemission and terahertz spectroscopy2022

    • Author(s)
      Bumjoo Lee, Yukiaki Ishida, Jonghyeon Kim, Jinsu Kim, Na Hyun Jo, So Yeun Kim, Inho Kwak, Min-Cheol Lee, Kyungwan Kim, Jae Hoon Kim, Myung-Hwa Jung, Shik Shin, Tae Won Noh, and Hyunyong Choi
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 19 Pages: 195430-195430

    • DOI

      10.1103/physrevb.106.195430

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of the sample work function on alkali metal dosing induced electronic structure change2021

    • Author(s)
      Saegyeol Jung, Yukiaki Ishida, Minsoo Kim, Masamichi Nakajima, Shigeyuki Ishida, Hiroshi Eisaki, Woojae Choi, Yong Seung Kwon, Jonathan Denlinger, Toshio Otsu, Yohei Kobayashi, Soonsang Huh, Changyoung Kim
    • Journal Title

      Journal of Electron Spectroscopy and Related Phenomena

      Volume: 249 Pages: 147045-147045

    • DOI

      10.1016/j.elspec.2021.147045

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A compact and stable incidence-plane-rotating second harmonics detector2021

    • Author(s)
      Kim S. H.、Jung S.、Seok B.、Kim Y. S.、Park H.、Otsu T.、Kobayashi Y.、Kim C.、Ishida Y.
    • Journal Title

      Review of Scientific Instruments

      Volume: 92 Issue: 4 Pages: 043905-043905

    • DOI

      10.1063/5.0047337

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Work function seen with sub-meV precision through laser photoemission2020

    • Author(s)
      Ishida Y.、Jung J. K.、Kim M. S.、Kwon J.、Kim Y. S.、Chung D.、Song I.、Kim C.、Otsu T.、Kobayashi Y.
    • Journal Title

      Communications Physics

      Volume: 3 Issue: 1 Pages: 158-158

    • DOI

      10.1038/s42005-020-00426-x

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Remarks] Measuring the work function precisely

    • URL

      https://engineeringcommunity.nature.com/posts/measuring-the-work-function-precisely

    • Related Report
      2022 Annual Research Report

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Published: 2020-02-06   Modified: 2025-01-30  

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