JaLCDOI 10.18926/fest/11541
タイトル(別表記) Upconversion property and light scattering in Tm(3+)-doped glass-ceramics
フルテキストURL 007_119_125.pdf
著者 三浦 嘉也| 丁 勇| 村田 隆| 姫井 裕助| 難波 徳郎|
抄録 Glass-ceramics containing Pb(x)Cd(1-x)F(2) microcrystallites were prepared through heat treatment of Tm(3+)/Yb(3+)doped SiO(2)-Al(2)O(3)-PbF(2) glasses. The crystallite size was controlled by varying the heat-treatment time. By changing glass composition, two types of strong optical scattering, Rayleigh and Mie scattering modes were observed for the glass ceramics. In the case of Rayleigh scattering, the scattering region expanded to the long-wavelength side with increasing the heat-treatment time. On the other hand, in the case of Mie scattering, the region were hardly dependent on wavelength, and visible light was widely scattered. It was argued that the different scattering phenomena were caused by the different size of the crystallites or their morphogical texture. Furthermore, the glass-ceramics with strong optical scattering showed higher upconversion fluorescence intensity than the matrix glass. The mechanisms for the enhanced upconversion due to the scattering were discussed.
キーワード Optical scattering Glass-ceramics Oxyfluoride glass Microcrystallite Upconversion fluorescence
出版物タイトル 岡山大学環境理工学部研究報告
発行日 2002-03-22
7巻
1号
開始ページ 119
終了ページ 125
ISSN 1341-9099
言語 Japanese
論文のバージョン publisher
NAID 120002313480