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1998 Fiscal Year Final Research Report Summary

Development of high thermal-resistant quartz laser materials by uniform dispersion with zeolite and its application to industry.

Research Project

Project/Area Number 09650735
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic materials/Physical properties
Research InstitutionOsaka University

Principal Investigator

NAKATSUKA Masahiro  Institute of Laser Engineering, Osaka University, レーザー核融合研究センター, 教授 (20088462)

Co-Investigator(Kenkyū-buntansha) JITSUNO Takahisa  Institute of Laser Engineering, レーザー核融合研究センター, 助教授 (30162811)
FUJITA Hisanori  Institute of Laser Engineering, レーザー核融合研究センター, 助教授 (70135755)
Project Period (FY) 1997 – 1998
KeywordsQuartz glass / Laser material / Zeolite / Thermal resistance / Quantum efficiency / Fluorescence / Neodymium ion / Bismus ion
Research Abstract

The object of this research is to achieve high thermal-resistant laser materials with quartz host.The research results are as follows :
(1) It was found that the fluorescence extinction in a quartz material produced by a conventional method was due to cluctering of doped atoms such as neodymium.
(2) The new method was established to realize a uniform dispersion of doped atoms in quartz glass to avoid clustering in solgel quartz.The quantum efficiency was largely recovered and the fluorescence life time reached to 500 micro second.
(3) Ther were founded many technologies to control vavle generation in quartz glass with particle selection of coloidal silica in solgel method, processing of preformed material in solgel process, an history in sintering temperature, and control of atomospheric gases.
(4) Another application of zeolite crystal was found to co-doping method to silica, usage of phospher to improve an emission process, and new fluorescence from bismus and copper atoms.
(5) Measurement method of quantum efficiency was newly established to estimate a basic property of the laser glass.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] Y.Hujimoto and M.Nakatsuka: "A novel method for uniform dispersion of the rare earth inos in SiO_2 glass using zeolite X" Journal of Non-Crystalline Solids. Vol.215. 182-191 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤本靖,中塚正大: "積分球とサーモパイルを併用した発光体の量子効率測定の新手法" レーザー研究. 25巻2号. 171-175 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Hujimoto and M.Nakatsuka: "Spectroscopic properties and quantum yield of Cu-doped SiO_2 glass" Journal of Luminescence. Vol.75. 213-219 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Hujimoto and M.Nakatsuka: "A novel method for uniform dispersion of the rate earth ions in SiO_2 glass using zeolite X" Journal of Non-Crystalline Solids. Vol.215. 182-191 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Hujimoto and M.Nakatsuka: "New method to measure quantum efficiency of fluorescence by using integralating sphere and thermo-pile" The Review of Laser Engineering. Vol.25, No.2. 171-175 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Hujimoto and M.Nakatsuka: "Spectroscopic properties and quantum yield of Cu-doped SiO_2 glass" Journal of Luminescence. Vol.175. 213-219 (1997)

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

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Published: 1999-12-08  

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