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Research on spin-optical effects in semiconductors and their applications to optical devices

Research Project

Project/Area Number 14550044
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied optics/Quantum optical engineering
Research InstitutionKonan University

Principal Investigator

ANDO Hiraoki  Konan University, department of Science and Technology, Professor, 理工学部, 教授 (50330402)

Co-Investigator(Kenkyū-buntansha) MIZUNO Kenichi  Konan University, department of Science and Technology, Professor, 教授 (80068139)
ICHIDA Masao  Konan University, department of Science and Technology, Lecturer, 講師 (30260590)
AOKI Tamao  Konan University, department of Science and Technology, Associate Professor, 助教授 (80283034)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2004: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2003: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2002: ¥2,800,000 (Direct Cost: ¥2,800,000)
KeywordsSpin / Polarization / Nanostructure / Semiconductor / low-dimensional structure / レーザー / カーボンナノチューブ / レーザ
Research Abstract

In this research project spin-optical effects in semiconductor structures have been investigated to clarify spin process in semiconductors and to apply the spin effects to novel device functions. Following results have been obtained in the project.
・Spin effects on polarization characteristics in semiconductor lasers have been investigated. In the experiments AlGaAs/GaAs Distributed-Feedback structure surface-emitting laser was optically excited with circularly polarized pulse to cause partial electron-spin alignment in GaAs active medium and thus to investigate spin effects in the laser structures. The partial alignment of electron spin markedly affects the polarization states of lasing output especially in the vicinity lasing threshold. A theoretical model, which includes electron-spin polarization states and their relaxation process, is proposed based on laser rate equations. The comparison of the experiments and the theory offers precious information on electron and hole spin behavi … More or in GaAs gain medium.
・Magnet-optical properties in aligned single-walled carbon nanotubes have measured under high magnetic field up to 10T. Appling high magnetic field parallel to the aligned tube axis, the optical absorption spectra has changed significantly in the vicinity of absorption peak corresponding to the 0.8 eV semiconductor tube transition. The observed change in optical absorption is explained by magnetic-field-induced band splitting and is theoretically analyzed by considering spin and orbital Zeeman effects.
・Polarization resolved photoluminescence mesurements have been carrier out in quantum well structures having different well thickness to investigate the effects of carrier localization on spin relaxation. Since nonlayer fluctuations in a thin quantum well cause carrier localization the quantum wells offers special opportunities to investigate the spin-localization effects. In the experiments a photoelestic modulator has been used to precisely evaluate circularly polarized luminescence components. Experiments have demonstrated the carrier localization in quantum wells causes significant prolongation of spin lifetime. Less

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (21 results)

All 2005 2004 2003 Other

All Journal Article (16 results) Publications (5 results)

  • [Journal Article] Temperature dependence of time-resolved luminescence spectra for 1D excitons in single-walled carbon nanotubes micelles2005

    • Author(s)
      M.Ichida, et al.
    • Journal Title

      J.Lumin. 112

      Pages: 287-290

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Temperature dependence of time-resolved luminescence spectra for 1D excitons in single-walled carbon nanotubes in micelles2005

    • Author(s)
      M.Ichida, I.Umezu, H.Kataura, M.Kimura, S.Suzuki, Y.Achiba, H.Ando
    • Journal Title

      J Lumin. 112

      Pages: 287-287

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Temperature dependence of time-resolved luminescence spectra for 1D excitons in single-walled carbon nanotubes in micelles2005

    • Author(s)
      M.Ichida, et al.
    • Journal Title

      J.Luminescence 112(掲載予定)

      Pages: 287-290

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effects of biexcitons on exciton coherence processes in In_xGa_<1-x>As quantum dots2004

    • Author(s)
      H.Gotoh, et al.
    • Journal Title

      Phys.Rev B 69

      Pages: 155328-155328

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effects of exciton-biexciton coherent coupling on exciton absorption in quantum dots2004

    • Author(s)
      H.Gotoh, H.Kamada, T.Saitoh, H.Ando, J.Temmyo
    • Journal Title

      Appl.Phys.Lett. 85

      Pages: 3480-3480

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effects of exciton-biexciton coherent coupling on exciton absorption in quantum dots2004

    • Author(s)
      H.Gotoh, et al.
    • Journal Title

      Appl.Phys.Lett. 85

      Pages: 34880-3482

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effects of biexcitons on exciton coherence processes in In_xGa_<1-x>As quantum dots2004

    • Author(s)
      H.Gotoh, et al.
    • Journal Title

      Phys.Rev B. 69

      Pages: 155328-155331

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Electric-field-induced anisotropy of exciton optical properties in semiconductor quantum dots2003

    • Author(s)
      H.Gotoh, et al.
    • Journal Title

      J.Appl.Phys. 94

      Pages: 342-347

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Exciton spin relaxation properties in zero dimensional semiconductor quantum dots2003

    • Author(s)
      H.Gotoh, at al.
    • Journal Title

      Jpn.J.Appl.Phys. 42

      Pages: 3340-3349

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Electric-field-induced anisotropy of exciton optical properties in semiconductor quantum dots2003

    • Author(s)
      H.Gotoh, H.Kamada, T.Saitoh, H.Ando, J.Temmyo
    • Journal Title

      J.Appl.Phys. 94

      Pages: 342-342

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Exciton spin relaxation properties in zero dimensional semiconductor quantum dots2003

    • Author(s)
      H.Gotoh, H.Kamada, H.Ando, J.Temmyo
    • Journal Title

      Jpn.J.Appl.Phys. 42

      Pages: 3340-3340

    • NAID

      10011255384

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Optical properties of CdS nanocrystal covered by polymer chains on the surface2003

    • Author(s)
      I.Umezu, K.Mandai, R.Koizumi, T.Aoki-Matsumoto, K.Mizuno, M.Inada, A.Sugimura, Y.Sunaga, T.Ishii, Y.Nagasaki
    • Journal Title

      Micro Electronic Engineering 66

      Pages: 53-53

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Exciton absorption properties of coherently coupled exciton-biexciton systems in quantum dots

    • Author(s)
      H.Gotoh, et al.
    • Journal Title

      Phys.Rev.B (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Magneto-optical properties of aligned single-walled carbon nanotubes

    • Author(s)
      M.Ichida, et al.
    • Journal Title

      Proceedings of the 27th International Conference on the Physics of Semiconductors (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Exciton absorption properties of coherently coupled exciton-biexciton systems in quantum dots

    • Author(s)
      H.Gotoh, H.Kamada, T.Saitoh, H.Ando, J.Temmyo
    • Journal Title

      Phys.Rev B. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Magneto-optical properties of aligned single-walled carbon nanotubes

    • Author(s)
      M.Ichida, H.Wakida, H.Kataura, Y.Achiba, H.Ando
    • Journal Title

      Proceedings of the 27th International Conference on the Physics of Semiconductors. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] H.Gotoh, et al.: "Exciton Spin Relaxation Properties in Zero Dimensional Semiconductor Quantum Dots"Jpn.J.Appl.Phys.. 42. 3340-3349 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Gotoh, et al.: "Electric-field-induced Anisotropy of Excitonic Optical Properties in Semiconductor Quantum Dots"J.Appl.Phys.. 94. 342-347 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Ichida, et al.: "Ultrafast relaxation dynamics of photoexcited states on semiconducting single-walled carbon"Physica B. 323. 237-238 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Ichida, et al.: "Coulomb effects on the fundamental optical transition in semiconducting single-walled carbon"Phys. Rev. B. 65. 241407(R)-241410(R) (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Aoki, et al.: "Size distribution of aromatic microcrystallites embedded in PMMA nonlinear optics"Nonlinear Optics. (To be published).

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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