Spectroscopy, upconversion dynamics, and applications of Er³⁺-doped low-phonon materials

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• 作者：Angel J. Garcia-Adeva
• 关键词：Upconversion dynamics ; Low-phonon materials ; Solid-state optical refrigeration ; Anti-Stokes laser cooling ; Upconversion laser cooling ; Nanoscale photonic heterostructures
• 刊名：Journal of Luminescence
• 出版年：2008
• 期刊代码：54_00222313
• 类别：ch
• 出版时间：May-June 2008
• 卷：128
• 期：5-6
• 页码：697-702
• 文件大小：674 K

摘要

In this work I summarize some of the recent work carried out by our group on the upconversion dynamics of Er³⁺-doped potassium lead halide crystals, which possess very small phonons and present very efficient blue and green upconversion. Furthermore, a non-conventional application of these RE-doped low-phonon materials in optical refrigeration of luminescent solids is also discussed, paying especial attention to new pathways for optical cooling that include infrared-to-visible upconversion. Finally, I conclude with some hints of what I think it is the next step into improving the luminescence efficiency of solids: the use of RE-doped nanoscale photonic heterostructures for controlling the density of photonic states.