Photoluminescence of Bi₄Si₃O₁₂:Er³⁺ crystal excited in the commercial laser diode emission region

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• 作者：A. Lira C. ; M.O. Ramí ; rez ; J. Garcí ; a Solé ; ; U. Caldiñ ; o
• 关键词：Erbium ; Er³⁺ ; Bi₄Si₃O₁₂ ; Up-conversion
• 刊名：Optical Materials
• 出版年：2007
• 期刊代码：81_09253467
• 类别：ch
• 出版时间：February 2007
• 卷：29
• 期：6
• 页码：605-609
• 文件大小：199 K

摘要

The luminescence of Er³⁺ ions in Bi₄Si₃O₁₂ has been investigated in the excitation spectral range corresponding to diode pumping (760–840 nm) under continuous wave laser excitation. In addition to the one photon infrared emission (⁴I_11/2 → ⁴I_15/2), up-converted luminescence in the green (²H_11/2,⁴S_3/2 → ⁴I_15/2) and red (⁴F_9/2 → ⁴I_15/2) spectral regions are observed under excitation within the ⁴I_9/2 state (795 nm). From a detailed analysis of cw experimental data it is inferred that such up-converted emissions can be attributed to a combination of excited state absorption and energy transfer up-conversion processes.