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Ultrafast radiative decay caused by coherent coupling between light and confined excitons in organic thin films

Research Project

Project/Area Number 24540321
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics I
Research InstitutionOsaka University

Principal Investigator

ITOH Tadashi  大阪大学, ナノサイエンスデザイン教育研究センター, 特任教授 (60004503)

Co-Investigator(Kenkyū-buntansha) ICHIMIYA Masayoshi  滋賀県立大学, 工学部, 准教授 (00397621)
ASHIDA Masaaki  大阪大学, 大学院基礎工学研究科, 教授 (60240818)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsレーザー光物性 / 量子閉じ込め / 超高速輻射緩和 / サイズ共鳴増大 / 光学非線形性 / 四光波混合 / 分子性結晶 / 半導体単結晶薄膜 / 光物性
Outline of Final Research Achievements

We have investigated ultrafast radiative decay and optical nonlinearity caused by coherent coupling between light and confined exciton (so-called size-resonant enhancement) in organic thin films in comparison with those of inorganic thin films.
We have found the acceleration of radiative decay by one or two orders of magnitude (decay time of 250ps or less) of zero-phonon emission line of Frenkel exciton in 100nm-scale thick pure crystalline films of aromatic molecular anthracene. Judging from the high luminescence yield, we have concluded that the acceleration of the luminescence decay is probably caused by the size-resonant enhancement, although any characteristic structure caused by the exciton confinement is not yet found. In inorganic CuCl single-crystalline thin films, we have confirmed the effective enhancement of room-temperature optical nonlinearity of Wannier exciton caused by the size-resonant enhancement.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (25 results)

All 2015 2014 2013 2012 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (20 results) (of which Invited: 1 results)

  • [Journal Article] Resonant Optical Kerr Response with Ultrashort Decay Time by Nonlocal Wave Coupling of Light and Excitons, Ultrafast Phenomena XIX2015

    • Author(s)
      M. Ichimiya, T. Umakoshi, H. Murata, T. Kinoshita, H. Ishihara and M. Ashida
    • Journal Title

      Ultrafast Phenomena XIX, Proceedings of the 19th International Conference, (Springer)

      Volume: 08.Tue.P2 Pages: 348-351

    • DOI

      10.1364/up.2014.08.tue.p2.47

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Extreme Optical Responses by Precise Control in Thin Film Fabrication ofⅠ-Ⅶ Compounds2013

    • Author(s)
      一宮正義、芦田昌明、石原一
    • Journal Title

      Journal of Smart Processing

      Volume: 2 Issue: 5 Pages: 245-250

    • DOI

      10.7791/jspmee.2.245

    • NAID

      10031200072

    • ISSN
      2186-702X, 2187-1337
    • Year and Date
      2013-09-20
    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Growth of high-quality CuCl thin films by a technique involving electron-beam irradiation2013

    • Author(s)
      M. Ichimiya
    • Journal Title

      J. Cryst. Growth

      Volume: 378 Pages: 372-375

    • DOI

      10.1016/j.jcrysgro.2012.12.103

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multiple light-coupling modes of confined excitons observable in photoluminescence spectra of high-quality CuCl thin films2012

    • Author(s)
      L. Q. Phuong, M. Ichimiya, H. Ishihara and M. Ashida
    • Journal Title

      Physical Review B

      Volume: 86 Issue: 23 Pages: 235449-235449

    • DOI

      10.1103/physrevb.86.235449

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Room temperature superradiance due to coherent coupling between light and extended single quantum state2012

    • Author(s)
      M. Ichimiya, H. Yasuda, M. Ashida, H. Ishihara and T. Itoh
    • Journal Title

      Journal of Non-Crystalline Solids

      Volume: 358 Issue: 17 Pages: 2357-2361

    • DOI

      10.1016/j.jnoncrysol.2012.02.019

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 超短パルス励起による巨大な光-励起子コヒーレント結合の観測2015

    • Author(s)
      馬越隆之、佐伯昴、一宮正義、木下岳、石原一、芦田昌明
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学(東京都)
    • Year and Date
      2015-03-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] ZnO薄膜における光波-分極波長距離結合による超高速輻射緩和2015

    • Author(s)
      一宮正義、馬越隆之、佐伯昴、木下岳、石原一、川上将輝、中山正昭、芦田昌明
    • Organizer
      第62回応用物理学会春季学術講演会
    • Place of Presentation
      東海大学(平塚市)
    • Year and Date
      2015-03-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] ZnO薄膜における光-励起子結合効果による超高速非線形応答の観測2014

    • Author(s)
      佐伯昴、馬越隆之、一宮正義、木下岳、石原一、川上将輝、中山正昭、芦田昌明
    • Organizer
      第25回光物性研究会
    • Place of Presentation
      神戸大学(神戸市)
    • Year and Date
      2014-12-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] CuCl薄膜における励起子輻射緩和の超短パルス励起効果2014

    • Author(s)
      馬越隆之、佐伯昴、一宮正義、石原一、芦田昌明
    • Organizer
      第25回光物性研究会
    • Place of Presentation
      神戸大学(神戸市)
    • Year and Date
      2014-12-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] CuCl薄膜における光-励起子長距離結合効果による超高速・高効率光カー応答2014

    • Author(s)
      佐伯 昴,馬越隆之,村田寛幸,一宮正義,芦田昌明
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学(春日井市)
    • Year and Date
      2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] ZnO薄膜における光-励起子コヒーレント結合の観測2014

    • Author(s)
      馬越隆之,佐伯 昴,一宮正義,木下 岳,石原 一,川上将輝,中山正昭,芦田昌明
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学(春日井市)
    • Year and Date
      2014-09-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] Resonant Optical Kerr Response with Ultrashort Decay Time by Nonlocal Wave Coupling of Light and Excitons2014

    • Author(s)
      M. Ichimiya, T. Umakoshi, H. Murata, T. Kinoshita, H. Ishihara, and M. Ashida
    • Organizer
      19th International Conference on Ultrafast Phenomena (UP 2014)
    • Place of Presentation
      Okinawa Convention Center (Okinawa, Japan)
    • Year and Date
      2014-07-09
    • Related Report
      2014 Annual Research Report
  • [Presentation] Ultrafast Resonant Optical Kerr Response due to Long-Range Coherent Coupling of Light and Multinode-Type Excitons2014

    • Author(s)
      M. Ichimiya, H. Murata, T. Umakoshi, T. Kinoshita, H. Ishihara, and M. Ashida
    • Organizer
      Conference on Lasers and Electro-Optics (CLEO: 2014)
    • Place of Presentation
      San Jose Convention Center (San Jose, CA, USA)
    • Year and Date
      2014-06-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] 高品質CuClの薄膜における光カー効果による超高速応答の観測

    • Author(s)
      村田寛幸、馬越隆之、一宮正義、芦田昌明
    • Organizer
      第24回光物性研究会
    • Place of Presentation
      大阪市立大学(大阪市)
    • Related Report
      2013 Research-status Report
  • [Presentation] 量子閉じ込め励起子の波動共鳴による超高速光カー応答

    • Author(s)
      一宮正義、木下岳、石原一、芦田昌明
    • Organizer
      第74回応用物理学会秋季学術講演会
    • Place of Presentation
      同志社大学(京田辺市)
    • Related Report
      2013 Research-status Report
  • [Presentation] Optical Properties of Confined Exciton Systems and Their Perspective

    • Author(s)
      T. Itoh
    • Organizer
      Vietnam International School of Physics (VSOP19)
    • Place of Presentation
      Univ. Quy Nhon, Quy Nhon, Vietnam
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Optical Kerr Effect of Confined Excitons Coherently Coupled with Radiation Wave

    • Author(s)
      M. Ichimiya, K. Kamizono, N. Okamoto, H. Ishihara, and M. Ashida
    • Organizer
      The 10th Conference on Lasers and Electro-Optics Pacific Rim, and The 18th OptoElectronics and Communications Conference / Photonics in Switching 2013 (CLEO-PR & OECC/PS 2013)
    • Place of Presentation
      Kyoto International Conference Center (Kyoto, Japan)
    • Related Report
      2013 Research-status Report
  • [Presentation] 高品質CuCl 薄膜における超高速光カー応答

    • Author(s)
      一宮正義、神薗建太、木下岳、岡本尚也、石原一、芦田昌明
    • Organizer
      ナノ学会第11回大会
    • Place of Presentation
      東京工業大学(東京都)
    • Related Report
      2013 Research-status Report
  • [Presentation] CuCl薄膜における光―励起子結合の増強による励起子輻射緩和の高速化

    • Author(s)
      神薗建太、一宮正義、村田寛幸、石原一、芦田昌明
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学(東広島市)
    • Related Report
      2012 Research-status Report
  • [Presentation] CuCl薄膜における弱閉じ込め励起子の光カー効果

    • Author(s)
      神薗建太、一宮正義、岡本尚也、石原一、芦田昌明
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学(東広島市)
    • Related Report
      2012 Research-status Report
  • [Presentation] Enhancement of Exciton Superradiance in CuCl Thin Films under Oblique Incidence

    • Author(s)
      K. Kamizono, M. Ichimiya, H. Murata, H. Ishihara, and M. Ashida
    • Organizer
      8th Handai Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      Osaka University (Suita, Osaka, Japan)
    • Related Report
      2012 Research-status Report
  • [Presentation] Coherent Exciton-light Couplings in High-quality CuCl Thin Films

    • Author(s)
      L. Q. Phuong, M. Ichimiya, H. Ishihara, and M. Ashida
    • Organizer
      8th Handai Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      Osaka University (Suita, Osaka, Japan)
    • Related Report
      2012 Research-status Report
  • [Presentation] CuCl薄膜における斜入射条件下での励起子輻射緩和の高速化

    • Author(s)
      神薗建太、一宮正義、村田寛幸、石原一、芦田昌明
    • Organizer
      第23回光物性研究会
    • Place of Presentation
      大阪市立大学(大阪市)
    • Related Report
      2012 Research-status Report
  • [Presentation] Growth of high-quality CuCl thin films by a technique involving electron-beam irradiation

    • Author(s)
      M. Ichimiya, L. Q. Phuong, M. Ashida, and T. Itoh
    • Organizer
      The 17th International Conference on Molecular Beam Epitaxy (MBE2012)
    • Place of Presentation
      Nara Prefectural New Public Hall (Nara, Japan)
    • Related Report
      2012 Research-status Report
  • [Presentation] Multiple light-coupling modes of confined excitons observable in photoluminescence spectra of high-quality CuCl thin films

    • Author(s)
      L. Q. Phuong, M. Ichimiya, H. Ishihara, and M. Ashida
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学(横浜市)
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2020-05-15  

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