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

Study of Long Wavelength Semiconductor Lasers by EMF Excitation

Research Project

Project/Area Number 02452076
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Applied materials
Research InstitutionKyoto University

Principal Investigator

MORIMOTO T.  Kyoto Univ. Inst. Atomic Energy, Prof., 原子エネルギー研究所, 教授 (30027122)

Co-Investigator(Kenkyū-buntansha) UEDA S.  Kyoto Univ. Inst. Atomic Energy, Technician, 原子エネルギー研究所, 教務職員 (00093196)
CHIBA M.  Kyoto Univ. Inst. Atomic Energy, Instructor, 原子エネルギー研究所, 助手 (90027144)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 1991: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1990: ¥4,400,000 (Direct Cost: ¥4,400,000)
KeywordsSemiconductor Lasers / Tunable Infrared Lasers / Narrow-Gap Semiconductors / Quantum Limit / Electromagnetic-Force Excitation / 赤外線レ-ザ- / 赤外線誘導放射 / 波長可変赤外半導体レ-ザ- / 量子極限におけるレ-ザ-作用 / バルクInSbの電磁力励起
Research Abstract

Stimulated, interband Landau emission originating from the excitation of electrons and holes by the action of the J X H force at the quantum limit has been discovered in bulk n-type InSb at 4.2 - 135 K, accompanied by a current saturation in the V - I curve, when passing a current density J, as low as 1640 A/cm^2 for H = 7 T at 80 K for example, in perpendicular to the applied magnetic field H.
At the quantum limit, the excited electrons and holes are almost populated in the lowest Landau levels yielding the inverted population at the current densities above the threshold value Jc. Then, the gain, g (omega, H), of the Landau emission at the band edge (k_z= 0) has been shown to be divergently high value for the (O_+ -> O') and (O_<_> -> O') transitions, explaining well such an extremely small value of Jc.
The polarization measurements have revealed that the extraordinary mode is the favorable one to suffer the selective amplifier in the sample.
The similar Landau emission has also been observed at room temperature in high magnetic fields above 6 T, from which the band parameters, such as epislon_g = 0.18 eV, m^* _1(0)= 0.015 m_o and g_1(O)= -47, have been determined for InSb at room temperature.
The similar phenomena have been verified for Hg_<0.8>Cd_<0.2>Te, but with the quantum efficiency of about 1/20 of InSb samples.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] T.MORIMOTO: "Stimulated Landau Emission of Bulk InSb due to Electromagnetic-Force Excitation" Proc.20th Int.Conf.Physics of Semiconductors,Thessaloniki,1990,ed.E.M.Anastassakis and J.D.Joannopoulos(World Scientific,Singapore 1990). 1847-1850 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.MORIMOTO: "Stimulated Interband Landau Emission due to Electromagnetic-Force Excitation of InSb at Quantum Limit" Proc.Int.Conf.Application of High Magnetic Fields in Semiconductor Physics,Wurzburg(1990);High Magnetic Fields in Semiconductor Physics III,ed.G.Landwehr(Springer-Verlag,Berlin,1992).(1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.MORIMOTO: "Interband Landau Emission Due to Magnetoelectric-Photo Effect in Bulk InSb:Quantum Aspects of Stimulated Emission at High Magnetic Fields" Journal of Physical Society of Japan. 60. 2446-2460 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.MORIMOTO: "Stimulated Infrared Emission from Hot Electrons of InSb Excited by J×H Force at the Quantum Limit" Extended Abstract,7th Int.Conf.on Hot Carriers in Semiconductors(Nara,1991),191-192;Semicond.Sci.Technol.(1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.MORIMOTO: "Polarization of the Stimulated Emission due to the Magnetoelectric-Photo Effect of InSb at the Qunttim Limit" Japanese Journal of Applied Physics. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Morimoto and M. Chiba: ""Stimulated Landau Emission of Bulk InSb due to Electromagnetic-Force Excitation"" Proc. 20th Int. Conf. Physics of Semiconductors, Thessaloniki, 1990. World Scientific, Singapore 1990. 1847-1850 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Morimoto and M. Chiba: ""Stimulated Interband Landau Emission due to Electromagnetic-Force Excitation of InSb at the Quantum Limit"" Proc. Int. Conf. Application of High Magnetic Fields in Semiconductor Physics, Wurzburg (1990). Springer-Verlag, Berlin. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Morimoto and M. Chiba: ""Interband Landau Emission Due to Magnetoelectric-Photo Effect in Bulk InSb : Quantum Aspects of Stimulated Emission at High Magnetic Fields"" J. Phys. Soc. Jpn.60. 2446-2460 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Morimoto and M. Chiba: ""Stimulated Infrared Emission from Hot Electrons of InSb Excited by JXH Force at the Quantum Limit"" 7th Int. Conf. on Hot Carriers in Semiconductors (Nara, 1991). Semicond. Sci. Technol.(1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Morimoto and M. Chiba: ""Polarization of the Stimalated Emission due to the Magnetoelectric-Photo Effect of InSb at the Quantum Limit"" Jpn. J. Appl. Phys.(1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.MORIMOTO: "Stimulated Interband Landau Emission due to ElectromagneticーForce Excitation of InSb at Quantum Limit" Proc.Int.Conf.Application of High Magnetic Fields in Semiconductor Physics,Wurzburg(1990);High Magnetic Fields in Semiconductor Physics III,ed.G.Landwehr(SpringerーVerlag,Berlin,1992). (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.MORIMOTO: "Interband Landau Emission Due to MagnetoelecricーPhoto Effect in Bulk InSb:Quantum Aspeects of Stimulated Emission at High Magnetic Fields" Journal of Physical Society of japan. 60. 2446-2460 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.MORIMOTO: "Stimulated Infrared Emission from Hot Electrons of InSb Excited by J×H Force at the Quantum Limit" Extended Abstract,7th Int.Conf.on Hot Carriers in Semiconductors(Nara,1991),191ー192;Semicond.Sci.Technol.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.MORIMOTO: "Polarization of the Stimulated Emission due to the MagnetoelectricーPhoto Effect of InSb at the Qunttim Limit" Japanese Journal of Applied Physics. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.MORIMOTO: "Stimulated Interband Landau Emission of Bulk InSb due to ElectromagneticーForce Excitation" Proc.20th Int.Conf.Physics of Semiconductors,Thessaloniki(1990). 3. 1847-1850 (1990)

    • Related Report
      1990 Annual Research Report

URL: 

Published: 1990-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi