Ultrafast coherent nonlinear optical responses in carbon nanotubes

• Project/Area Number: 20340072
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: The University of Tokyo
• Principal Investigator: OKAMOTO Hiroshi The University of Tokyo, 大学院・新領域創成科学研究科, 教授 (40201991)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000); Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2009: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2008: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
• Keywords: カーボンナノチューブ / 非線形光学応答 / レーザー分光 / 光スイッチ / 励起子

Research Abstract

In semiconducting carbon nanotubes, optical properties are dominated by large oscillator strength and large binding energy of one-dimensional excitons and, therefore, large third-order optical nonlinearity is expected to be observed. In this study, we have measured coherent nonlinear optical spectra by femtosecond transient absorption spectroscopy. We have found a new kind of coherent nonlinear optical responses originating from exciton-exciton scattering as well as optical Stark effects generally observed in low-dimensional semiconductors under a near-resonant excitation condition.

Research Products

• [Journal Article] Optical pump-probe spectroscopy of photocarriers in rubrene single crystals (2011)
  • Author(s): S.Tao, et al.
  • Journal Title: Physical Review B Volume: 83
  • Peer Reviewed
• [Journal Article] Direct Detection of the Ultrafast Response of Charges and Molecules in the Photoinduced Neutral-to-Ionic Transition of the Organic Tetrathiafulvalene-p-Chloranil Solid (2010)
  • Author(s): H.Uemura, H.Okamoto
  • Journal Title: Physical Review Letters Volume: 105
  • Peer Reviewed
• [Journal Article] Subpicosecond coherent nonlinear optical response of isolated single-walled carbon nanotubes (2009)
  • Author(s): S.Tao, Y.Miyata, K.Yanagi, H.Kataura, H.Okamoto
  • Journal Title: Physical Review B 80
• [Journal Article] Subpicosecond coherent nonlinear optical response of isolated single-walled carbon nanotubes (2009)
  • Author(s): 田尾祥一, 他
  • Journal Title: Physical Review B 80
  • Peer Reviewed
• [Journal Article] Utrafast optical responses in one-dimensional Mott insulators of halogen-bridged Ni compounds (2009)
  • Author(s): S.Tao, et a1.
  • Journal Title: Journal of Physics:Conference Series 148
• [Presentation] 光機能性部位を有する分子性化合物EDT-TTF-BTAおよびBTM-TTF-SCH2-Fluoreneの光電物性 (2011)
  • Author(s): 内田隆介, 他3名
  • Organizer: 日本物理学会2011年第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-02-25
• [Presentation] 第14回NAIST科学技術セミナー (2010)
  • Author(s): 岡本博
  • Organizer: フェムト秒レーザー光で起こす超高速相転移
  • Place of Presentation: 奈良先端科学技術大学院大学
  • Year and Date: 2010-12-01
• [Presentation] 過渡吸収分光で探る有機半導体の光キャリアダイナミクス (2010)
  • Author(s): 岡本博
  • Organizer: 日本物理学会2010年第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-20
• [Presentation] 光で物質を制御する～分子性半導体の光誘起相転移～(招待講演) (2009)
  • Author(s): 岡本博
  • Organizer: 第4回物性科学領域横断研究会-凝縮系科学の最前線-
  • Place of Presentation: 東京大学
  • Year and Date: 2009-11-29
• [Presentation] ルブレン単結晶における励起子・光キャリアダイナミクスの温度依存性 (2009)
  • Author(s): 田尾祥一, 他4名
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-27
• [Presentation] Photogeneration and relaxation dynamics of excitons and charge carriers in an organic molecular semiconductor rubrene (2009)
  • Author(s): 田尾祥一, 他
  • Organizer: The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets(ISCOM2009)
  • Place of Presentation: Hokkaido
  • Year and Date: 2009-09-13
• [Presentation] Ultrafast Exciton and Carrier Dynamics in a Rubrene Single Crystal(招待講演) (2009)
  • Author(s): 田尾祥一, 他
  • Organizer: ISSP Workshop「Physics and New Phenomena of π-electronic Interfaces」
  • Place of Presentation: University of Tokyo
  • Year and Date: 2009-08-10
• [Presentation] Temperature and excitation energy dependence of ultrafast dynamics of photoexcited states in rubrene single crystals (2009)
  • Author(s): 田尾祥一, 他
  • Organizer: ISSP Workshop「Physics and New Phenomena of π-electronic Interfaces」
  • Place of Presentation: University of Tokyo
  • Year and Date: 2009-08-10
• [Presentation] ルブレン単結晶のフェムト秒分光:光キャリア生成の励起エネルギー依存性 (2009)
  • Author(s): 田尾祥一他7名
  • Organizer: 日本物理学会2009年第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-30
• [Presentation] Ultrafast exciton level modulation due to coherent optical nonlinearity in isolated semiconducting SWNTs (2009)
  • Author(s): S.Tao, Y.Miyata, K.Yanagi, H.Kataura, H.Okamoto
  • Organizer: The 37th Fullerene-Nanotubes General Symposium
  • Place of Presentation: Tsukuba city
• [Presentation] Ultrafast optical responses in one-dimensional Mott insulators of halogen-bridged Ni compounds (2008)
  • Author(s): S.Tao, et al.
  • Organizer: 3rd International Conference on Photo-Induced Phase Transitions and Cooperative Phenomena(PIPT2008)
  • Place of Presentation: the Media Center of Osaka City University
  • Year and Date: 2008-11-11
• [Presentation] Ultrafast exciton and carrier dynamics in an organic semiconductor rubrene (2008)
  • Author(s): S.Tao, et a1.
  • Organizer: International Symposium on Anomalous Quantum Materials(ISAQM2008)
  • Place of Presentation: University of Tokyo
  • Year and Date: 2008-11-09
• [Book] 「金属錯体の現代物性化学」 4章.多重機能性の最前線 1節 (2008)
  • Author(s): 岡本博
  • Publisher: 三共出版
• [Remarks] ホームページ
  • URL: http://pete.k.u-tokyo.ac.jp/index.html
• [Remarks]
  • URL: http://pete.k.u-tokyo.ac.jp/
• [Remarks]
  • URL: http://Pete.k.u-tokyo.ac.jp/index.htm