Luminescence of Ga2O3-GeO2-Bi2O3-PbO Glasses Doped with Rare-earth Ions for Full Color Displays
This paper reports on frequency upconversion emission properties of Tm3 + /Yb3+ and/or Ho3 +/Yb3 +-doped Ga2O3-GeO2-Bi2O3-PbO heavy metal oxide glasses. An intense blue emission centered at around 476 nm of Tm3 + /Yb3 + -co-doped samples, corresponding to the 1G4→3H6 transition of Tm3+ has been clearly observed upon excitation of 980 nm laser diode. The cube-like dependence of the blue-emission on the incident pump laser power, indicates a three-photon process contribute to the blue upconversion emissions. Meanwhile intense green and red emissions centered at 546 and 660 nm in Ho3+/Yb3 +-codoped samples, which assigned to the transitions of (5F4,5S2)→5I8 and 5F5→5I8 of Ho3+ respectively, have been observed and the involved mechanism has also been discussed. The quadratic dependence of fluorescence on excitation laser power confirms that the fact that the two-photon contribute to the green-red upconversion emissions.
Upconversion Luminescence Ga2O3-GeO2-Bi2O3-PbO Glass Rare Earth Ions
D. M. Shi Q.Y. Zhang G. F. Yang Y. X. Pan Z. H. Jiang
Institute of Optical Communication Materials, South China University of Technology and Key Laboratory of Specially Functional Materials and Advanced Manufacturing Technology, Ministry of Education, Guangzhou 510641, China
国际会议
上海
英文
1703-1707
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）