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Non-equilibrium phase control of molecular conductors by intense terahertz pulse excitation

Research Project

Project/Area Number 22684013
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics I
Research InstitutionKeio University (2011)
The University of Tokyo (2010)

Principal Investigator

WATANABE Shinichi  慶應義塾大学, 理工学部, 准教授 (10376535)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥26,390,000 (Direct Cost: ¥20,300,000、Indirect Cost: ¥6,090,000)
Fiscal Year 2011: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2010: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Keywordsテラヘルツ光 / 分子性導体 / カーボンナノチューブ / 光誘起相転移 / 精密偏光計測 / 偏光計測
Research Abstract

We performed terahertz(THz) pump experiments to investigate non-equilibrium carrier dynamics in organic materials. We achieved to generate an intense THz pulse with the peak electric-field of 0. 7 MV/cm, and THz electric-field-induced one-dimensional excitons generation in aligned semiconducting single-walled carbon nanotubes was observed at room temperature. The non-equilibrium dynamics of the charge-ordered phase ofθ-(BEDT-TTF)_2CsZn(SCN)_4 was investigated by the THz-pump and THz-probe experiments, and the transmission change in the THz spectral region was observed by performing the THz pulse excitation. Finally, we proposed and developed a method to quickly and precisely determine the polarization direction of THz pulses for investigating an electron spin dynamics in organic materials for future studies.

Report

(3 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • Research Products

    (28 results)

All 2012 2011 2010 Other

All Journal Article (12 results) (of which Peer Reviewed: 8 results) Presentation (13 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] T-ray topography by time-domain polarimetry2012

    • Author(s)
      N. Yasumatsu, and S. Watanabe
    • Journal Title

      Optics Letters

      Volume: (in press)

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Intense terahertz pulse-induced nonlinear responses in carbon nanotubes2012

    • Author(s)
      R. Shimano, S. Watanabe, and R. Matsunaga
    • Journal Title

      Journal of Infrared, Millimeter, and Terahertz Waves

      Volume: (in press)

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Precise real-time polarization measurement of terahertz electromagnetic waves by a spinning electro-optic sensor2012

    • Author(s)
      N. Yasumatsu, and S. Watanabe
    • Journal Title

      Rev. Sci. Instrum

      Volume: 83 Pages: 23104-23104

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Precise real-time polarization measurement of terahertz electromagnetic waves by a spinning electro-optic sensor2012

    • Author(s)
      Naoya Yasumatsu, Shinichi Watanabe
    • Journal Title

      Review of Scientific Instruments

      Volume: 83 Issue: 2

    • DOI

      10.1063/1.3683570

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 高強度テラヘルツパルスによるカーボンナノチューブの超高速非線形光学現象2011

    • Author(s)
      渡邉紳一、島野亮
    • Journal Title

      月刊オプトロニクス

      Volume: 8月号、30巻、356号 Pages: 107-107

    • Related Report
      2011 Final Research Report
  • [Journal Article] Intense terahertz pulse induced exciton generation in carbon nanotubes2011

    • Author(s)
      S. Watanabe, N. Minami, and R. Shimano
    • Journal Title

      Opt. Express, ibid.

      Volume: 19 Pages: 1528-1538

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] 高強度テラヘルツパルスによるカーボンナノチューブの超高速非線形光学現象2011

    • Author(s)
      渡邉紳一、島野亮
    • Journal Title

      月刊オプトロニクス8月号

      Volume: 30 Pages: 107-111

    • Related Report
      2011 Annual Research Report
  • [Journal Article] Intense terahertz pulse induced exciton generation in carbon nanotubes2011

    • Author(s)
      Shinichi Watanabe
    • Journal Title

      Optics Express

      Volume: 19 Pages: 1528-1538

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intense terahertz field-induced electroabsorption in carbon nanotubes2010

    • Author(s)
      R. Shimano, T. Ogawa, and S. Watanabe
    • Journal Title

      Proceedings of 35th International Conference on Infrared Millimeter and Terahertz Waves(IRMMW-THz)

    • Related Report
      2011 Final Research Report
  • [Journal Article] Room temperature terahertz electro-optic modulation by excitons in carbon nanotubes2010

    • Author(s)
      T. Ogawa, S. Watanabe, N. Minami, and R. Shimano
    • Journal Title

      Appl. Phys. Lett

      Volume: 97 Pages: 41111-41111

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Room temperature terahertz electro-optic modulation by excitons in carbon nanotubes2010

    • Author(s)
      T.Ogawa
    • Journal Title

      Applied Physics Letters

      Volume: 97

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intense terahertz field-induced electroabsorption in carbon nanotubes2010

    • Author(s)
      R.Shimano
    • Journal Title

      Proceedings of 35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz)

    • Related Report
      2010 Annual Research Report
  • [Presentation] Terahertz profilometer by time-domain polarimetry2012

    • Author(s)
      N. Yasumatsu, and S. Watanabe
    • Organizer
      CLEO : 2012
    • Place of Presentation
      San Jose, USA
    • Year and Date
      2012-05-08
    • Related Report
      2011 Final Research Report
  • [Presentation] Terahertz profilometer by time-domain polarimetry2012

    • Author(s)
      Naoya Yasumatsu, Shinichi Watanabe
    • Organizer
      CLEO : 2012
    • Place of Presentation
      San Jose, USA(発表確定)
    • Year and Date
      2012-05-08
    • Related Report
      2011 Annual Research Report
  • [Presentation] 時間分解テラヘルツ分光計測による低次元有機物質の非平衡キャリア動力学の研究2012

    • Author(s)
      渡邉紳一
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-27
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 高速・高精度テラヘルツ偏光解析装置の開発2012

    • Author(s)
      安松直弥, 渡邉紳一
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-24
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] テラヘルツ偏光情報を用いた高速・高精度表面段差イメージング計測2012

    • Author(s)
      安松直弥, 渡邉紳一
    • Organizer
      第59回応用物理学関係連合講演会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2012-03-16
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 高速反射型テラヘルツ波偏光イメージング装置の開発2012

    • Author(s)
      安松直弥, 渡邉紳一
    • Organizer
      第59回応用物理学関係連合講演会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2012-03-16
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] θ-(BEDT-TTF) 2CsZn(SCN) 4の電荷秩序相におけるテラヘルツポンプテラヘルツプローブ分光2011

    • Author(s)
      坪田翔悟, 渡邉紳一, 谷口弘三, 島野亮
    • Organizer
      日本物理学会第66回年次大会
    • Place of Presentation
      新潟大学
    • Year and Date
      2011-03-25
    • Related Report
      2011 Final Research Report
  • [Presentation] 高強度テラヘルツパルスによるカーボンナノチューブにおける励起子の衝突イオン化生成2010

    • Author(s)
      渡邉紳一, 島野亮
    • Organizer
      8th International Symposium on Crystalline Organic Metals,日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 高強度テラヘルツパルスによるカーボンナノチューブにおける励起子の衝突イオン化生成2010

    • Author(s)
      渡邉紳一
    • Organizer
      日本物理学会 2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] Terahertz frequency electro-optic modulation in carbon nanotubes2010

    • Author(s)
      R. Shimano, T. Ogawa, and S. Watanabe
    • Organizer
      The 35th International Conference on Infrared, Millimeter and THz Waves
    • Place of Presentation
      Italy
    • Year and Date
      2010-09-07
    • Related Report
      2011 Final Research Report
  • [Presentation] Intense Terahertz Field-Induced Electroabsorption in Carbon Nanotubes2010

    • Author(s)
      R.Shimano
    • Organizer
      35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz)
    • Place of Presentation
      Rome (Italy)
    • Year and Date
      2010-09-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] カーボンナノチューブにおけるテラヘルツ非線形光学効果2010

    • Author(s)
      渡邉紳一, 島野亮
    • Organizer
      「テラヘルツ分光計測とイメージング」研究討論会(平成22年度第一回テラヘルツ電磁波技術研究会,平成22年度第1回テラヘルツ応用システム研究会共催研究討論会)
    • Place of Presentation
      三国観光ホテル
    • Year and Date
      2010-08-05
    • Related Report
      2011 Final Research Report
  • [Presentation] θ-(BEDT-TTF)_2CsZn(SCN)_4の電荷秩序相におけるテラヘルツポンプテラヘルツプローブ分光

    • Author(s)
      坪田翔悟
    • Organizer
      日本物理学会 第66回年次大会
    • Place of Presentation
      (震災のため中止、発表は成立)
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.phys.keio.ac.jp/guidance/labs/watanabe/index.html

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://www.phys.keio.ac.jp/guidance/labs/watanabe/index.html

    • Related Report
      2011 Annual Research Report
  • [Patent(Industrial Property Rights)] 偏波解析装置、偏波解析方法、物性測定装置、及び物性測定方法2011

    • Inventor(s)
      渡邉紳一、安松直弥
    • Industrial Property Rights Holder
      慶應義塾大学
    • Industrial Property Number
      2011-258104
    • Filing Date
      2011-11-25
    • Related Report
      2011 Annual Research Report 2011 Final Research Report

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Published: 2010-08-23   Modified: 2020-05-15  

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