Tb³⁺/Yb³⁺ co-activated Silica-Hafnia glass ceramic waveguides

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• 作者：G. Alombert-Goget ; C. Armellini ; S. Berneschi ; A. Chiappini ; A. Chiasera ; M. Ferrari ; S. Guddala ; E. Moser ; S. Pelli ; D.N. Rao ; G.C. Righini
• 关键词：Quantum cutting ; Down-conversion ; Rare earth ; Glass ceramic ; Energy transfer
• 刊名：Optical Materials
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：33
• 期：2
• 页码：227-230
• 全文大小：301 K

文摘

70SiO₂-30HfO₂ glass ceramic planar waveguides co-activated by Tb³⁺/Yb³⁺ ions were fabricated by sol gel route using a top-down approach. The energy transfer from Tb³⁺ to Yb³⁺ ions was investigated as a function of the Tb³⁺/Yb³⁺ molar ratio as well as of the total amount of rare earth ions. In particular, the conversion of absorbed photons at 476 nm into photons at 980 nm is considered, looking for potential application in photovoltaic systems.