Photoluminescence of an Yb3+/Al3+-codoped microstructured optical fibre |
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| Authors: | Xia Chang-Ming Zhou Gui-Yao Han Ying and Hou Lan-Tian |
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| Institution: | State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China; School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China; School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China |
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| Abstract: | An Yb3+/Al3+-codoped microstructured optical fibre is prepared based on photonic crystal fibre technology. The characteristic spectra of preforms and fibres are experimentally investigated. The results show that under a 971 nm excitation, besides the known infrared fluorescence luminescence around 1050 nm, a blue luminescence peak at 486 nm is obtained. Moreover, an unexpected emission peak at 730 nm is also observed. The photoluminescence mechanism of an Yb3+/Al3+-codoped microstructured optical fibre is discussed. The emission peak at 486 nm is attributed to the cooperative upconversion resulting from pairs of Yb3+ ions, and the emission peak around 730 nm is ascribed to the stimulated Raman scattering because of nonlinear effects of microstructured optical fibre. The Yb3+/Al3+-codoped microstructured optical fibre is promising for varieties of applications from laser printing and optical recording to cancer treatments, such as photodynamic therapy. |
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| Keywords: | photoluminescence Yb3+/Al3+-codoped microstructured optical fibre |
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