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2011 Fiscal Year Final Research Report

Observation of coherent magnons controlled by optical pulses using terahertz emission spectroscopy

Research Project

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Project/Area Number 21656019
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Applied optics/Quantum optical engineering
Research InstitutionOsaka University

Principal Investigator

NAGASHIMA Takeshi  大阪大学, レーザーエネルギー学研究センター, 助教 (60332748)

Project Period (FY) 2009 – 2011
Keywordsマグノン / テラヘルツ / 超高速制御
Research Abstract

Terahertz radiation with characteristic oscillations from transition-metal oxide antiferromagnets illuminated with femtosecond optical pulses was investigated by terahertz emission spectroscopy. From the dependences of frequency and amplitude of the oscillations on temperature and excitation intensity, it is concluded that the oscillations are magnetic-dipole radiation from coherent magnons excited by the optical pulses. In addition, controls of coherent magnons with high temporal resolution by irradiations of optical pulse trains and optical pulses with various polarization states are demonstrated.

  • Research Products

    (15 results)

All 2012 2011 2010 2009

All Journal Article (3 results) Presentation (12 results)

  • [Journal Article] Coherent control of terahertz radiation from antiferromagnetic magnons in NiO excited by optical laser pulses2012

    • Author(s)
      Junichi Nishitani, Takeshi Nagashima, and Masanori Hangyo
    • Journal Title

      Physical Review B

      Volume: 85 Pages: 174439

  • [Journal Article] Measurement of electron paramagnetic resonance using terahertz time-domain spectroscopy2011

    • Author(s)
      Kohei Kozuki, Takeshi Nagashima, and Masanori Hangyo
    • Journal Title

      Optics Express

      Volume: 19 Pages: 24950-24956

  • [Journal Article] Terahertz radiation from coherent antiferromagnetic magnons excited by femtosecond laser pulses2010

    • Author(s)
      Junichi Nishitani, Kohei Kozuki, Takeshi Nagashima, and Masanori Hangyo
    • Journal Title

      Applied Physics Letters

      Volume: 96 Pages: 221906

  • [Presentation] 反強磁性体MnOのテラヘルツ分光2012

    • Author(s)
      西谷純一, 長島健, 萩行正憲
    • 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
      2012-03-26
  • [Presentation] 光・電磁波パルスを用いた電子スピンの高速応答検出及び制御2012

    • Author(s)
      長島健
    • Organizer
      日本分光学会関西支部平成23年度講演会
    • Place of Presentation
      大阪大学
    • Year and Date
      2012-03-09
  • [Presentation] Terahertz radiation from antiferromagnetic MnO2011

    • Author(s)
      Junichi Nishitani, Takeshi Nagashima, and Masanori Hangyo
    • Organizer
      36th International Conference on Infrared, Millimeter and Terahertz Waves(IRMMW-THz)
    • Place of Presentation
      ヒューストン, USA
    • Year and Date
      2011-10-06
  • [Presentation] 光-電磁波パルスによる電子スピンの制御と検出2011

    • Author(s)
      長島健
    • Organizer
      大阪大学フォトニクスセンター第22回フォトニクス・コロキウム
    • Place of Presentation
      大阪大学
    • Year and Date
      2011-08-01
  • [Presentation] フェムト秒光パルス励起反強磁性マグノンからのテラヘルツ波放射2010

    • Author(s)
      西谷純一, 長島健, 萩行正憲
    • Organizer
      平成22年度日本分光学会年次講演会
    • Place of Presentation
      京都大学(京都市)
    • Year and Date
      2010-11-20
  • [Presentation] 光パルス及びテラヘルツ波パルスと物質の相互作用2010

    • Author(s)
      長島健
    • Organizer
      理化学研究所エクストリームフォトニクス研究シンポジウム
    • Place of Presentation
      理化学研究所(和光市)
    • Year and Date
      2010-10-13
  • [Presentation] Terahertz radiation from coherent antiferromagnetic magnons exited by circularly polarized laser pulses2010

    • Author(s)
      Junichi Nishitani, Takeshi Nagashima, Masanori Hangyo
    • Organizer
      The 35th International Conference on Infrared, Millimeter, and Terahertz Wave
    • Place of Presentation
      Angelicum University(ローマ)
    • Year and Date
      2010-09-03
  • [Presentation] フェムト秒光パルス励起反強磁性コヒーレントマグノンからのテラヘルツ波放射2010

    • Author(s)
      長島健
    • Organizer
      東京大学物性研短期研究会「外部場の時間操作と実時間物理現象」
    • Place of Presentation
      東京大学物性研究所(柏市)
    • Year and Date
      2010-06-23
  • [Presentation] テラヘルツ波時間領域分光法を用いた電子スピン応答の研究2010

    • Author(s)
      長島健, 西谷純一, 上月康平
    • Organizer
      電気学会光応用・視覚研究会
    • Place of Presentation
      大阪産業大学梅田サテライトキャンパス
    • Year and Date
      2010-01-27
  • [Presentation] フェムト秒光パルス励起反強磁性マグノンからのテラヘルツ波放射2009

    • Author(s)
      西谷純一, 長島健, 上月康平, 萩行正憲
    • 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] Terahertz Emission from Antiferromagnetic Magnons Excited by Femtosecond Laser Pulses2009

    • Author(s)
      西谷純一, 長島健, 上月康平, 萩行正憲
    • Organizer
      The 34th International Conference on Infrared, Millimeter and Terahertz Wave
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2009-09-24
  • [Presentation] Electron spin response studied by THz time domain spectroscopy2009

    • Author(s)
      長島健, 西谷純一, 上月康平
    • Organizer
      8th Pacific Rim Conference on Lasers and Electro-Optics
    • Place of Presentation
      Shanghai, China
    • Year and Date
      2009-08-31

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Published: 2013-07-31  

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