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1994 Fiscal Year Final Research Report Summary

Design and Manufacture of a Solid State Laser with Tunable Range from 1.3mum to 1.6mum

Research Project

Project/Area Number 05559007
Research Category

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

Allocation TypeSingle-year Grants
Research Field 広領域
Research InstitutionTOKYO INSTITUTE OF TECHNOLOGY

Principal Investigator

MINAMI Fujio  Tokyo Institute of Technology, Dep.of Appl.Phys., Professor Cheif Researcher, 理学部, 教授 (30200083)

Co-Investigator(Kenkyū-buntansha) TANAKA Yuichi  Ouyou Kouden CO.,, 主任研究員
Project Period (FY) 1993 – 1994
KeywordsCr^<4+> : YAG / tunable laser / 2photon resonance / GaAs / AlGaAs / quantum well
Research Abstract

In order to design a solid state Cr : YAG laser with 1.3-1.6 mum tuning range, we first constructed a Ti : sapphire laser system. Using an optimized Ti : sapphire laser and two-photon spectroscopy, we investigated ZnSe thin films and quantum wells. As a result, it is found that SHG signals in these materials manifest themselves in two-photon resonance with 1S and 2P excitons. We also showed that 2P exciton state has a fine structure caused by the coupling between the exciton envelope and the total hole spin.
Replacing a laser rod and mirrors, we made a Cr : YAG lase system pumped by Nd : YAG laser. At 8 W cw excitation, a tuning range from 1.38 mum to 1.58 mum was obtained and an average output power of 0.9 W was attained.
Next we confirm the pulse operation of this laser system. When pumped by a 5 W Q-switched Nd : YAG laser operating 3kHz, the laser had an average output power of 150 mW,a pulse duration of 100 ns and a tuning range of 1.38-1.58 mum. Using this laser system, we investigated the resonance SHG effects in GaAs/AlGaAs quantum wells. We observed an enhancement of SHG which occurs when the twice the incident photon energy is resonant with the 1S exciton state.

  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] K. Inoue: "Study of electronic strucutre in strained ZnSe/GaAs thin films bynonlinear optical-and Brewster-angle reflection spectroscopies" J. Crystal Growth. 138. 182-186 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] F. Minami: "Two-photon spectroscopy in ZnSe/ZnS quantum wells" J.Crystal Growth. 138. 796-799 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Kuroda: "Excitonic structures in II-VI superlattices observed by Brewster-angle reflectance spectroscopy" J. Appl. Phys.76. 533-536 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Matsushita: "2P Exciton in Biaxially Strained ZnSe" Proc. 22nd Int. Conf. of Semicond Phys.321-324 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Kuroda: "Subpicosecond Excitonic Coherence Emission ina II-VI Superlattice Observed by Transient Reflectance Spectroscopy" Proc. 22nd Int. Conf. of Semicond. Phys.1388-1391 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 南 不二雄: "半導体における光第2高調波の共鳴発生" 日本物理学会誌. 50(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Inoue: ""Study of electronic strucutre in strained ZnSe/GaAs thin films by nonlinear optical- and Brewster-angle reflection spectroscopies"" J.Crystal Growth. 138. 182 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] F.Minami: ""Two-photon spectroscopy in ZnSe/ZnS quantum wells"" J.Crystal Growth. 138. 796 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kuroda: ""Excitonic structures in II-VI superlatices observed by Brewster-angle reflectance spectroscopy"" J.Appl. Phys. 76. 533 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Matsushita: ""2P Exciton in Biaxially Strained ZnSe"" Proc.22nd Int.Conf.of Semicond. Phys., (World Scientific Singapore, 1995). 321

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kuroda: ""Subpicosecond Excitonic Coherence Emission in a II-VI Superlattice Observed by Transient Reflectance Spectroscopy"" Proc.22nd Int.Conf.of Semicond. Phys., (World Scientific Singapore, 1995). 1388

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kuroda: ""Exciton free induction decay in II-VI thin films observed by transient Brewster-angle reflectance spectroscopy"" Excitonic Processes in Condensed Matter, editted by J.Singh(SPIE,Washington 1995). 474

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] F.Minami: ""Resonant second harmonic generation in semiconductors"" Butsuri Gakkaisi. 50in press. (1995)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1996-04-15  

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