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2012 Fiscal Year Final Research Report

Dynamics of high-density excited states and photo-induced phases in novel semiconductors

Planned Research

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Project AreaOptical science of dynamically correlated electrons in semiconductors
Project/Area Number 20104007
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionOsaka University

Principal Investigator

ASHIDA Masaaki  大阪大学, 基礎工学研究科, 教授 (60240818)

Co-Investigator(Kenkyū-buntansha) TANAKA Koichiro  京都大学, 学内共同利用施設等, 教授 (90212034)
Co-Investigator(Renkei-kenkyūsha) MATSUBARA Eiichi  大阪大学, 大学院・基礎工学研究科, 特任助教 (10421992)
HIRORI Hidemoto  京都大学, 物質-細胞統合システム拠点, 特定拠点助教 (00512469)
SHIRAI Masanobu  京都大学, 物質-細胞統合システム拠点, 特定拠点助教 (30303803)
WATA1NABE Masayuki  京都大学, 大学院・人間環境学研究科, 助教 (20240525)
Project Period (FY) 2008 – 2012
Keywordsテラヘルツ / 強相関電子系 / 酸化物 / 高密度光励起 / 光誘起相転移 / 光物性 / 空気プラズマ
Research Abstract

To investigate the dynamics of photo-induced phases of high-density excited states in novel semiconductors, such as oxides, ultrabroadband time domain spectroscopy, which provides electric field detection, has been successfully developed, so that it covers from sub-terahertz up to near-infrared 200 THz, which is the world’s highest frequency. As a result, new phonon modes in a quantum paraelectrics were observed. Moreover, the highest terahertz conversion efficiency was achieved and a novel frequency change of the phonon modes in the quantum paraelectrics caused by irradiation of the highly intense terahertz wave, which suggests a new way of material control.

  • Research Products

    (40 results)

All 2013 2012 2011 2010 2009 2008

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

  • [Journal Article] Coherent infrared spectroscopy system from terahertz to near infrared using air plasma produced by 10-fs pulses2013

    • Author(s)
      E. Matsubara, M. Nagai, and M. Ashida
    • Journal Title

      J. Opt. Soc. Am. B

      Volume: Vol.30 Pages: 1627-1630

    • DOI

      DOI:10.1364/JOSAB.30.001627

    • Peer Reviewed
  • [Journal Article] 高強度テラヘルツ光発生と非線形テラヘルツ分光2013

    • Author(s)
      田中耕一郎,廣理英基
    • Journal Title

      レーザー研究

      Volume: 40 Pages: 480-485

    • Peer Reviewed
  • [Journal Article] Nonlinear Optical Phenomena Induced by Intense Single-Cycle Terahertz Pulses2013

    • Author(s)
      H. Hirori and K. Tanaka
    • Journal Title

      IEEE Journal of Selected Topics in Quantum Electronics

      Volume: 19 Pages: 8401110

    • DOI

      DOI:10.1109/JSTQE.2012.2221685

    • Peer Reviewed
  • [Journal Article] Ultrabroadband coherent electric field from far infrared to 200 THz using air plasma induced by 10 fs pulses2012

    • Author(s)
      E. Matsubara, M. Nagai, and M. Ashida
    • Journal Title

      Appl. Phys. Lett

      Volume: 101 Pages: 011105 (1-4)

    • DOI

      DOI:10.1063/1.4732524

    • Peer Reviewed
  • [Journal Article] High-efficient THz electric pulse generation via optical rectification by suppressing stimulated Raman Scattering2012

    • Author(s)
      M. Nagai, E. Matsubara and M. Ashida
    • Journal Title

      OSA Technical Digest, 2012

      Volume: JW2A Pages: 54(1-2)

    • DOI

      DOI:10.1364/CLEO_AT.2012.JW2A.54

    • Peer Reviewed
  • [Journal Article] Ultrafast Carrier Dynamics Under High Electric Field In Graphene2012

    • Author(s)
      S. Tani, F. Blanchard, and K. Tanaka
    • Journal Title

      Phys. Rev. Lett

      Volume: 109 Pages: 166603(1-5)

    • DOI

      DOI:10.1103/PhysRevLett.109.166603

    • Peer Reviewed
  • [Journal Article] 高強度テラヘルツパルスで誘起する非線形光学現象2012

    • Author(s)
      廣理英基,田中耕一郎
    • Journal Title

      応用物理学会誌

      Volume: 81 Pages: 291-297

    • Peer Reviewed
  • [Journal Article] Extremely thin metamaterial as slab waveguide at terahertz frequencies2012

    • Author(s)
      Y. Minowa, M. Nagai, H. Tao, K. Fan, A. C. Strikwerda, X. Zhang, R. D. Averitt, and K. Tanaka
    • Journal Title

      IEEE Transactions on Terahertz Science and Technology

      Pages: 097401

    • DOI

      DOI:10.1109/TTHZ.2011

    • Peer Reviewed
  • [Journal Article] Ferroelectric soft mode in a SrTiO_3 thin film impulsively driven to the anharmonic regime using intense picosecond Terahertz pulses2012

    • Author(s)
      I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka
    • Journal Title

      Physical Review Letters

      Volume: 108 Pages: 097401

    • DOI

      DOI:10.1103/PhysRevLett.108.097401

    • Peer Reviewed
  • [Journal Article] High-efficiency terahertz pulse generation via optical rectification by suppressing stimulated Raman scattering process2012

    • Author(s)
      M. Nagai, E. Matsubara, and M. Ashida
    • Journal Title

      OPTICS EXPRESS

      Volume: 20 Pages: 6509

    • DOI

      DOI:10.1364/OE.20.006509

    • Peer Reviewed
  • [Journal Article] Electric field detection of coherent synchrotron radiation in a storage ring generated using laser bunch slicing2012

    • Author(s)
      I. Katayama, H. Shimosato, M. Bito, K. Furusawa, M. Adachi, M. Shimada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh, and M. Ashida
    • Journal Title

      Appl. Phys. Lett

      Volume: 100 Pages: 111112

    • DOI

      DOI:10.1063/1.3694049

    • Peer Reviewed
  • [Journal Article] Ultrabroadband terahertz generation using DAST single crystals2012

    • Author(s)
      I. Katayama, R. Akai, M. Bito, H. Shimosato, K. Miyamoto, H. Ito, and M. Ashida
    • Journal Title

      Appl. Phys. Lett

      Volume: 97 Pages: 021105

    • DOI

      DOI:10.1063/1.3463452

    • Peer Reviewed
  • [Journal Article] Extraordinary carrier multiplication gated by a picosecond electric field pulse2011

    • Author(s)
      H. Hirori, K. Shinokita, M. Shirai, S. Tani, Y. Kadoya, and K. Tanaka
    • Journal Title

      Nature Communications

      Volume: vol.2 Pages: 594-1-594-6

    • DOI

      DOI:10.1038/ncomms1598

    • Peer Reviewed
  • [Journal Article] THz Nonlinear Spectroscopy of Solids2011

    • Author(s)
      K. Tanaka, H. Hirori, and M. Nagai
    • Journal Title

      IEEE Transactions on Terahertz Science and Technology

      Volume: 1 Pages: 301-312

    • DOI

      DOI:10.1109/TTHZ.2011.2159535

    • Peer Reviewed
  • [Journal Article] Magnetically controlled broadband THz absorption in a multiferroic hexaferrite at room temperature2011

    • Author(s)
      E. Matsubara, Y. Onishi, T. Ishikura, and M. Ashida
    • Journal Title

      CLEO 2011:Technical Digest

      Volume: JThB110

    • DOI

      DOI:10.1109/CLEOE.2011.5942522

    • Peer Reviewed
  • [Journal Article] Magnetic-Field Induced Broadband THz Absorption Change in a Multiferroic Hexaferrite at Room Temperature2011

    • Author(s)
      E. Matsubara, Y. Onishi, T. Ishikura, T. Kimura, and M. Ashida
    • Journal Title

      Europe CLEO/Europe EQEC 2011:Technical Digest

      Volume: CC3.2

    • DOI

      DOI:10.1109/CLEOE.2011.5942522

    • Peer Reviewed
  • [Journal Article] 高強度テラヘルツパルスが創る物性2011

    • Author(s)
      永井正也,廣理英基,田中耕一郎
    • Journal Title

      物理学会誌

      Volume: 66(12) Pages: 919-922

    • Peer Reviewed
  • [Journal Article] 広帯域テラヘルツ分光法とその薄膜評価への応用2010

    • Author(s)
      片山郁文,芦田昌明
    • Journal Title

      Journal of the Vacuum Society of Japan

      Volume: 53 Pages: 301-308

    • DOI

      DOI:10.3131/jvsj2.53.301

    • Peer Reviewed
  • [Journal Article] Excitonic Interactions with Intense Terahertz Pulses in ZnSe/ ZnMgSSe Multiple Quantum Wells2010

    • Author(s)
      H. Hirori, M. Nagai, and K. Tanaka
    • Journal Title

      Phys. Rev. B

      Volume: 81 Pages: 081305(R)

    • DOI

      DOI:10.1103/PhysRevB.81.081305

    • Peer Reviewed
  • [Journal Article] Electric Field Detection of Near-Infrared Light Using Photoconductive Sampling2009

    • Author(s)
      M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto, and H. Ito
    • Journal Title

      Ultrafast Phenomena XVI (Springer Series in Chemical Physics, 2009)

      Pages: 979-981

    • Peer Reviewed
  • [Presentation] THz dispersive mirror with metal disk array2012

    • Author(s)
      M. Nagai, M. Kimura, Y. Minowa and M. Ashida
    • Organizer
      International Symposium on Frontiers in THz Technology (FTT2012)
    • Place of Presentation
      Nara, Japan
    • Year and Date
      20121127-29
  • [Presentation] Terahertz Spectroscopy in Solids with Single-Cycle Terahertz Pulses2012

    • Author(s)
      K. Tanaka
    • Organizer
      International Symposium on Frontiers in THz Technology (FTT2012)
    • Place of Presentation
      Nara, Japan
    • Year and Date
      20121127-29
  • [Presentation] Generation and detection of ultrabroadband coherent infrared pulse with 200 THz bandwidth2012

    • Author(s)
      E. Matsubara, M. Nagai and M. Ashida
    • Organizer
      The 37th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2012)
    • Place of Presentation
      Wollongong, Australia
    • Year and Date
      20120923-28
  • [Presentation] Phase compensation in THz frequency region using the mirror with metal disk array2012

    • Author(s)
      M. Nagai, M. Kimura,Y. Minowa, M. Ashida
    • Organizer
      The 37th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2012)
    • Place of Presentation
      Wollongong, Australia
    • Year and Date
      20120923-28
  • [Presentation] Nonlinear carrier dynamics induced by intense terahertz wave2012

    • Author(s)
      K. Tanaka
    • Organizer
      The 37th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz2012)
    • Place of Presentation
      Wollongong, Australia
    • Year and Date
      20120923-28
  • [Presentation] High-Power Terahertz Generation and Terahertz Nonlinear Spectroscopy2012

    • Author(s)
      K. Tanaka
    • Organizer
      34th International Free Electron Laser Conference (FEL2012)
    • Place of Presentation
      Nara, Japan
    • Year and Date
      20120826-31
  • [Presentation] Ultrabroadband infrared time-domain spectroscopy2012

    • Author(s)
      M. Ashida
    • Organizer
      DYCE International Workshop
    • Place of Presentation
      Hokkaido, Japan
    • Year and Date
      20120807-11
  • [Presentation] Terahertz spectroscopy in solids with single-cycle terahertz pulses2012

    • Author(s)
      K. Tanaka
    • Organizer
      DYCE International Workshop
    • Place of Presentation
      Hokkaido, Japan
    • Year and Date
      20120807-11
  • [Presentation] Nonlinear Terahertz Spectroscopy in Solids with Single-Cycle Terahertz Pulses2012

    • Author(s)
      Koichiro Tanaka
    • Organizer
      18th Ultrafast Phenomena Conference (UP2012)
    • Place of Presentation
      Lausanne, Switzerland
    • Year and Date
      20120709-13
  • [Presentation] Generation and detection of ultrabroadband infrared wave exceeding 200 THz2012

    • Author(s)
      E. Matsubara, M. Nagai, and M. Ashida
    • Organizer
      XVIIIth International Conference on Ultrafast Phenomena (UP2012)
    • Place of Presentation
      Lausanne, Switzerland
    • Year and Date
      20120708-13
  • [Presentation] Generation of ultrabroadband coherent infrated wave with 200 THz bandwidth using air plasma driven by intense sub 10 fs pulses2012

    • Author(s)
      E. Matsubara, M. Nagai and M. Ashida
    • Organizer
      CLEO: Science and Innovations (CLEO_SI) 2012
    • Place of Presentation
      San Jose, USA
    • Year and Date
      20120506-11
  • [Presentation] High-efficient THz electric pulse generation via optical rectification by suppressing stimulated Raman Scattering2012

    • Author(s)
      M. Nagai, E. Matsubara and M. Ashida
    • Organizer
      Quantum Electronics and Laser Science Conference (QELS) 2012
    • Place of Presentation
      San Jose, USA
    • Year and Date
      20120506-11
  • [Presentation] Terahertz Nonlinear Spectroscopy with Intense Half-Cycle Pulses2012

    • Author(s)
      Koichiro Tanaka
    • Organizer
      The 1st Advanced Lasers and Photon Sources (ALPS'12)
    • Place of Presentation
      Pacifico Yokohama Yokoham, Japan
    • Year and Date
      20120426-27
  • [Presentation] Terahertz Near-Field Microscope for bio-sensing2012

    • Author(s)
      Koichiro Tanaka
    • Organizer
      Biophotonics Symposium: Terahertz Waves & Interactions with Biological Structures
    • Place of Presentation
      University of California, Davis, Sacramento, CA, USA
    • Year and Date
      2012-06-29
  • [Presentation] Magnetic-Field Induced Broadband THz Absorption Change in a Multiferroic Hexaferrite at Room Temperature2012

    • Author(s)
      E. Matsubara, Y. Onishi, T. Ishikura, T. Kimura, M. Ashida
    • Organizer
      European Conference on Lasers and Electro-Optics and the XIIth European Quantum Electronics Conference 2011
    • Place of Presentation
      International Congress Center, Munich, Germany
    • Year and Date
      2012-05-22
  • [Presentation] Nonlinear spectroscopy using intense THz pulses with amplitudes exceeding2011

    • Author(s)
      K. Tanaka
    • Organizer
      CLEO Europe 2011
    • Place of Presentation
      Munich, Germany
    • Year and Date
      2011-06-17
  • [Presentation] Ultrabroadband terahertz wave generation and detection with DAST crystal and photoconductive antenna2010

    • Author(s)
      M. Ashida
    • Organizer
      The 3rd Korea-Japan Joint Workshop on THz Technology
    • Place of Presentation
      Busan, Korea
    • Year and Date
      20101216-17
  • [Presentation] Coherent Synchrotron Terahertz Radiation Using Electron Bunch Slicing2010

    • Author(s)
      I. Katayama, H. Simosato, M. Bito, K. Furusawa, M. Adachi, M. Simada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh, M. Ashida
    • Organizer
      35th International Conference on Infrared, Millimeter and Terahertz Waves IRMMW-THz2010
    • Place of Presentation
      Rome, Italy
    • Year and Date
      20100905-10
  • [Presentation] Ultrabroadband Electric Field Generation and Detection from Far Infrared to Optical Communication Frequency2010

    • Author(s)
      E. Matsubara, M. Bito, H. Shimosato, M. Ashida
    • Organizer
      35th International Conference on Infrared, Millimeter and Terahertz Waves IRMMW-THz2010
    • Place of Presentation
      Rome, Italy
    • Year and Date
      20100905-10
  • [Presentation] Ultrabroadband THz generation and detection with 5-fs pulses2008

    • Author(s)
      M.Ashida
    • Organizer
      テラヘルツテクノロジーフォーラム第2回日韓合同ワークショップ
    • Place of Presentation
      三菱ビルコンファレンススクェアエムプラス丸の内
    • Year and Date
      20081024-25

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Published: 2014-08-29   Modified: 2025-06-05  

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