JaLCDOI 10.18926/fest/11541
Title Alternative Upconversion property and light scattering in Tm(3+)-doped glass-ceramics
FullText URL 007_119_125.pdf
Author Miura, Yoshinari| Ding, Yong| Murata, Takashi| Himei, Yusuke| Nanba, Tokuro|
Abstract 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.
Keywords Optical scattering Glass-ceramics Oxyfluoride glass Microcrystallite Upconversion fluorescence
Publication Title 岡山大学環境理工学部研究報告
Published Date 2002-03-22
Volume volume7
Issue issue1
Start Page 119
End Page 125
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313480