Ultraviolet and violet upconversion luminescence in Ho3+-doped Y2O3 ceramic induced by 532-nm CW laser

作者：Qin Feng; Zheng Yangdong; Yu Ying; Cheng Zhemin; Tayebi Pouran Sadat; Cao Wenwu; Zhang Zhiguo^*

来源：Journal of Alloys and Compounds, 2011, 509(4): 1115-1118.

DOI：10.1016/j.jallcom.2010.09.188

• Holmium
• Upconversion
• Ultraviolet

Ultraviolet and violet upconversion luminescence spectra of holmium-doped Y2O3 were produced under the excitation of a compact continues-wave 532 nm solid-state laser Emissions around 306 362 412 390 and 428 nm can be assigned to the transitions of D-3(3) -> I-5(j)(J = 8 7 6) -> (5)G(4) -> I-5(8) and (5)G(5) -> I-5(8) respectively Power dependence and upconversion dynamics analysis demonstrated that both the energy transfer upconversion (ETU) and the excited state absorption (ESA) processes were Involved in the population of D-3(3) state via the coupled intermediate states S-5(2)/F-5(4) Fluorescence spectra in the visible and infrared ranges showed that (5)G(4) and (5)G(5) states were populated by the ESA process from I-5(6) and I-5(7) states respectively while the I-5(6)

• 出版日期2011-1-28
• 单位哈尔滨工业大学