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Ultraviolet upconversion in Pr3+:Y2SiO5 crystal by Ar+ laser (488 nm) excitation |
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| Authors: | C L Sun J F Li C H Hu H M Jiang Z K Jiang |
| Institution: | (1) Department of Physics, Jilin University, Changchun, 130021, P.R. China;(2) Department of Physics, Yantai University, Yantai, 246005, P.R. China;(3) Department of Physics, Linyi Normal University, Linyi, 276000, P.R. China |
| Abstract: | Ultraviolet upconversion fluorescence band (260–350 nm) has been observed from Pr3+:Y2SiO5 pumped by Ar+ ion laser (488 nm). Power dependence of the fluorescence emitted from 4f5d, 3P0 and 1D2 were measured. The upconversion mechanism was analyzed using the rate equations with a simplified three level model. It appears that excited state absorption (ESA) is the dominant upconversion process for lower Pr3+ concentration and energy transfer upconversion (ETU) is dominant for higher Pr3+ concentration. |
| Keywords: | 42 65 Ky Frequency conversion harmonic generation including higher-order harmonic generation |
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