Comparative investigation of up-conversion luminescence in Tm-doped oxide-chloride germanate and tellurite glasses |
| |
Authors: | Hongtao Sun Zhongchao Duan Gang Zhou Junjie Zhang Zhonghong Jiang |
| |
Affiliation: | a Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China b Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China |
| |
Abstract: | Tm3+-doped oxide-chloride germanate and tellurite glasses have been synthesized by conventional melting method. Intense up-conversion luminescence emissions were simultaneously observed at room temperature in these glasses. The possible up-conversion mechanisms are discussed and estimated. However, in these Tm3+-doped glasses, tellurite glass showed weaker up-conversion emissions than germanate glass, which is inconsistent with the prediction from the difference of maximum phonon energy between tellurite and germanate glasses. In this paper, Raman spectroscopy was employed to investigate the origin of the difference in up-conversion luminescence in the two glasses. Our results confirm that, besides the maximum phonon energy, the phonon density of host glasses is also an important factor in determining the up-conversion efficiency. |
| |
Keywords: | 78.20.&minus e 42.70.Ce 32.70.Cs 42.70.Hj |
本文献已被 ScienceDirect 等数据库收录! |
|