| Original Articles |
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Infrared-to-Visible Upconversion and 1.53-μm Emission of Er3+-Doped Al(PO3)3-Based Fluorophosphate Glass |
| LI Tao1;ZHANG Qin-Yuan1;LIU Yue-Hui1;ZHANG Jun-Jie2;DENG Zai-De1;JIANG Zhong-Hong1,2 |
| 1Institute of Optical Communication Materials, South of China University of Technology, Guangzhou 510640
2Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| Cite this article: |
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LI Tao, ZHANG Qin-Yuan, LIU Yue-Hui et al 2004 Chin. Phys. Lett. 21 1147-1149 |
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Abstract We investigate the spectroscopic properties of the 1.53-μm emission from the 4I13/2 → 4I15/2 transition of Er3+ ions in Al(PO3)3-based fluorophosphate glass for applications in broadband fibre amplifiers. The emission peak locates at ～1530 nm with a full width at half-maximum of ～65 nm. The measured lifetime and the calculated emission cross-section of this transition are ～8.1 ms and ～7.6 x 10-21cm2, respectively. Frequency upconversion to the 4F7/2 state occurs simultaneously upon excitation of the 1.53-μm emission with a 977-nm laser diode. Three infrared-to-visible upconversion emissions centred at around 524, 546 and 668 nm have been clearly observed. The quadratic dependence of fluorescence on excitation laser power confirms the fact that a two-photon process will contribute to the infrared-to-visible upconversion emissions.
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| Keywords:
78.55.Qr
78.45.+h
78.20.-e
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Published: 01 June 2004
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| PACS: |
78.55.Qr
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(Amorphous materials; glasses and other disordered solids)
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78.45.+h
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(Stimulated emission)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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