• Search Research Projects
  • Search Researchers
  1. Back to previous page

THz光増幅器を用いた飽和吸収と非線形分光

Research Project

Project/Area Number08F08377
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Applied optics/Quantum optical engineering
Research InstitutionOsaka University
Host Researcher 猿倉 信彦  大阪大学, レーザーエネルギー学研究センター, 教授
Foreign Research Fellow ELMER Estacio Surat  大阪大学, レーザーエネルギー学研究センター, 外国人特別研究員
ESTACIO Elmer Surat  大阪大学, レーザーエネルギー学研究センター, 外国人特別研究員
Project Period (FY) 2008 – 2010
Project Status Completed(Fiscal Year 2010)
Budget Amount *help
¥2,200,000 (Direct Cost : ¥2,200,000)
Fiscal Year 2010 : ¥300,000 (Direct Cost : ¥300,000)
Fiscal Year 2009 : ¥800,000 (Direct Cost : ¥800,000)
Fiscal Year 2008 : ¥1,100,000 (Direct Cost : ¥1,100,000)
KeywordsTHzエミッタ / GaAs on Si / 非線形光学結晶 / 差周波発生(DFG) / 疑似位相整合 / 非線形光学結晶(KTP) / THz増幅 / ab initio計算 / Ba化合物 / フォノン
Research Abstract

テラヘルツ非線形分光測定装置の原理実証として、周期的分極反転構造を持つKTP結晶を利用した差周波発生を用いたTHz疑似位相整合差周波発生のデザインを行った。KTP結晶を最適な角度で固定し、2つの励起チタンサファイアレーザービームの間の角度をわずか0.005゜動かすだけで、0.27~1.21THzの領域でTHz波放射が得られ、さらにそのTHz波放射の分散は最小で1.81。という非常に小さな値でデザイン可能ということが示された。また、結晶の角度におけるTHz波の角度分散は、非線形に大きくなることがわかり、結晶の角度の重要性が確認された。
今回の計算により、周期的分極反転構造を持つKTP結晶を全く回転させることなく、広い周波数領域のTHz波が得られることが示された。これは実験的観点からも、実験装置を大がかりに調整させる必要がないことを示唆している。それゆえ、実験室での実現可能性が極めて高いものであると思われる。

Report

(3results)
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • 2008 Annual Research Report

Research Products

(10results)

All 2010 2008

All Journal Article Presentation

  • [Journal Article] Numerical Approach for Determination of Cutback Length to Estimate Dispersion and Loss Parameters of Terahertz Waveguides2010

    • Author(s)
      K.Ishikawa, C.Ponseca, E.S.Estacio, et al.
    • Journal Title

      Japanese Journal of Applied Physics

      Volume : Vol.49 Pages : 72702-72702

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of the terahertz emission characteristics of MBE-grown Ga As-based nanostructures2010

    • Author(s)
      S.Takatori, P.H.Minh, E.Estacio, et al.
    • Journal Title

      Optical Materials

      Volume : Vol.32 Pages : 776-779

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Birefringence of beta-BaB_2O_4 crystal in the terahertz region for parametric device design2008

    • Author(s)
      Elmer Estacio, et al.
    • Journal Title

      APPLIED PHYSICS LETTERS 92

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Terahertz emission from GaAs films on Si (100) and Si (111) substrates grown by molecular beam epitaxy (Poster)2010

    • Author(s)
      Takashi Yoshioka, Elmer Estacio, Satoru Takatori, et al.
    • Organizer
      The Fifth General Meeting of Asian Consortium on Computational Materials Science-Virtual Organization
    • Place of Presentation
      Tohoku University, Sendai, Japan
    • Year and Date
      2010-12-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] Terahertz emission from MBE-grown InAs and GaAs thin films on Si substrates excited in the transmissiongeometry, (Oral)2010

    • Author(s)
      E.Estacio, S.Takatori, M.Pham, et al.
    • Organizer
      28th SPP Physics Congress
    • Place of Presentation
      Antipolo City, Rizal, Philippines
    • Year and Date
      2010-10-27
    • Related Report
      2010 Annual Research Report
  • [Presentation] Terahertz emission from GaAs films on Si (100) substrates grown by molecular beam epitaxy (Invited Talk)2010

    • Author(s)
      Takashi Yoshioka, Elmer Estacio, Satoru Takatori, et al.
    • Organizer
      The 16th International Conference on Crystal Growth
    • Place of Presentation
      Beijing, China(招待講演)
    • Year and Date
      2010-08-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] Magnetic field polarity effects on the terahertz emission from GaAs/AIGaAs modulation -doped heterostructures with different AIGaAs spacer-la yer thickness (Oral)2010

    • Author(s)
      Takashi Yoshioka, Elmer Estacio, Satoru Takatori, et al.
    • Organizer
      The 16th International Conference on Crystal Growth
    • Place of Presentation
      Beijing, China
    • Year and Date
      2010-08-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] Terahertz Emission Characteristics of GaAs-based nanostructures grown by molecular beam epitaxy2010

    • Author(s)
      ESTACIO Elmer
    • Organizer
      The 1st Ultrafast Dynamics Symposium
    • Place of Presentation
      National Chiao Tung University, Taipei
    • Year and Date
      2010-01-14
    • Related Report
      2009 Annual Research Report
  • [Presentation] Terahertz emission from ultrafast optical excitation of MBE-grown GaAs on Si(100)and Si(111)substrates2010

    • Author(s)
      ESTACIO Elmer
    • Organizer
      The 6th Asian Conference on Ultrafast Phenomena
    • Place of Presentation
      National Taiwan University, Taipei
    • Year and Date
      2010-01-12
    • Related Report
      2009 Annual Research Report
  • [Presentation] Birefringence and Phonon-Mode Absorption of a BBO Crystal in the Terahertz Region2008

    • Author(s)
      Elmer Estacio, et al.
    • Organizer
      International Workshop on Photonics & Applications
    • Place of Presentation
      Nha Trang, Vietnam
    • Year and Date
      2008-09-11
    • Related Report
      2008 Annual Research Report

URL :

Published : 2008-04-01   Modified : 2016-04-21  

Information FAQ News Terms of Use

Powered by NII kakenhi