Different processes responsible for blue pumped, ultraviolet and violet luminescence in high-concentrated Er:YAG and low-concentrated Er:YAP crystals |
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| Authors: | Ningning Zu Haigui Yang Zhenwen Dai |
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| Affiliation: | a Department of Physics, Jilin University, Jiefang Road 2519, Changchun 130023, China
b Key Lab of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education, Changchun 130023, China |
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| Abstract: | Ultraviolet and violet upconverted luminescence in high-concentrated (8.4 at%) Er3+:YAG and low-concentrated (1 at%) Er3+:YAP crystals has been investigated under blue laser excitation of the 4F7/2 multiplet. The upconversion mechanisms were studied in detail based on upconversion luminescence intensity dependence and decay curves. Upconversion luminescence was attributed to energy transfer processes in Er3+:YAG and excited state absorption processes in Er3+:YAP, respectively. |
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| Keywords: | 42.65.Ky 42.70.Hj 78.47.+p |
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