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SECOND-ORDER OPTICAL NONLINEAR EFFECT IN GE-DOPED GLASS MATERIALS

Research Project

Project/Area Number 06650045
Research Category

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

Allocation TypeSingle-year Grants
Research Field Applied optics/Quantum optical engineering
Research InstitutionCHIBA UNIVERSITY,FACULTY OF ENGINEERING

Principal Investigator

OGURA Iwao  CHIBA UNIVERSITY,FACULTY OF ENGINEERING,PROFESSOR, 工学部, 教授 (80013100)

Co-Investigator(Kenkyū-buntansha) OMATSU Takashige  CHIBA UNIVERSITY,FACULTY OF ENGINNERING,RESEARCH ASSOCIATE, 工学部, 助手 (30241938)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
KeywordsSecond harmonic generation / Optical fiber / Photorefractive effects / Multi-photon absorption / シリカガラス / 二次の非線形光学効果
Research Abstract

Theoretical investigation of a conversion efficiency of second harmonic generation in Ge-doped glass materials was carried out. Photo-carriors, generated by the multi-photon absorption during the seeding process, diffuse and produce a local electric field in glass materials. By the local electric field, the symmetry of glass materials is broken and the second order nonlinearity is induced. On the basis of this model, the second order nonlinear coefficient should be proportional to Iomega^4I_2omega^2 This scaling law agrees with the previous experimental results. Further, the build-up time of second order nonlinearity and the amplitude of local electric field depend on the excitation rate of photo-carriors. Doping impurities, which operate as a donor level, is effective for obtaining materials with larger nonlinearity.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 下瀬川正幸: "干渉計測によるNYABロッドの熱伝導率測定" 第20回光学シンポジウム講演予稿集. 19-20 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Takshige OMATSU: "Thermal effects in laser diode pumped self-frequency-doubled NYAB microchip laser" Optics Communications. 118. 302-308 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masayuki SHIMOSEGAWA et. al.: "Thermal properties of laser diode pumped NYAB microchip laser rod" Symposium on Japanease Optics '95. 19-20 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Takashige OMATSU et. al.: "Thermal effects in laser diode pumped self-frequency-doubled NYAB microchip laser" Optics Communications. 118. 302-308 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 下瀬川正幸: "干渉計測によるNYABロッドの熱伝導率測定" 第20回光学シンポジウム講演予稿集. 19-20 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.OMATSU: "Thermal effects in laser diode pumped self‐frequency‐doubled NYAB microchip laser" Optics Communications. 118. 302-308 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 加藤嘉己: "LD励起自己周波数逓信マイクロチップNYABレーザーにおける熱誘起位相不整合" 光学. 23. 511-515 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Takashige Omatsu: "Second harmonic generation of a copper vapor laser using an anamorphic optical system" Japanese Journal of Applied Physics(part1). 33. 4903-4904 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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