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Frequency Upconversion Emission of Er3+-Doped Strontium--Lead--Bismuth Glasses |
| SUN Hong-Tao1,2;DAI Shi-Xun1;XU Shi-Qing1,2;HU Li-Li1;JIANG Zhong-Hong1 |
| 1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Graduate School of the Chinese Academy of Sciences, Beijing 100039 |
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| Cite this article: |
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SUN Hong-Tao, DAI Shi-Xun, XU Shi-Qing et al 2004 Chin. Phys. Lett. 21 2292-2294 |
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Abstract Er3+-doped strontium--lead--bismuth glasses for developing potential upconversion lasers have been fabricated and characterized. Under 975 nm excitation, intense green and red emissions centred at 525, 546, and 657 nm, corresponding to the transitions 2H11/2 → 4I15/2, 4S3/2 → 4I15/2, and 4F9/2 → 4I15/2, respectively, were observed at room temperature. The upconversion mechanisms are discussed based on the energy matching and quadratic dependence on excitation power, and the dominant mechanisms are excited state absorption and energy transfer upconversion for 525 and 546nm emissions, and energy transfer upconversion for 657nm emission.
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| Keywords:
78.20.-e
42.70.Ce
42.70.Hj
32.70.Cs
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Published: 01 November 2004
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| PACS: |
78.20.-e
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(Optical properties of bulk materials and thin films)
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42.70.Ce
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(Glasses, quartz)
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42.70.Hj
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(Laser materials)
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32.70.Cs
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(Oscillator strengths, lifetimes, transition moments)
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