| 光谱学与光谱分析 |
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| Mid-Infrared Emission Properties of Ho3+/Tm3+-Codoped Ge-Ga-S-CsI Glasses |
| ZHU Jun, DAI Shi-xun*, WU Li-gang, ZHANG Wei, SHEN Xiang, WANG Xun-si, XU Tie-feng, NIE Qiu-hua |
| College of Information Science and Engineering, Ningbo University, Ningbo 315211, China |
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Abstract A serial of chalcogenide glasses based on 78GeS2-12Ga2S3-10CsI (in molar%) system doped with the different radios of Ho3+/Tm3+ ions were synthesized by melt-quenching method. Their absorption spectra and mid-infrared fluorescence under 808 nm laser excitation were measured. According to Judd-Ofelt theory, the intensity parameters Ωi(i=2, 4, 6), spontaneous transition probabilities Arad and radiative lifetomes τr for Ho3+ ion were calculated. Absorption cross-sections σa, emission cross-sections σe and gain coefficient G(λ) corresponding to the emission of Ho3+ ions at 2.0 μm were obtained. By changing the Tm3+ concentration, the energy transfer regime of Tm3+ and Ho3+ ions under 808 nm excitation was investigated. The results show that Ho3+/Tm3+-codoped Ge-Ga-S-CsI glasses would be a potential material for 2.0 μm emission.
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Received: 2010-09-15
Accepted: 2010-12-30
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Corresponding Authors:
DAI Shi-xun
E-mail: daishixun@nbu1.edu.cn
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| [1] |
ZHANG Peng-jun1, DAI Shi-xun1, 2*, CAO Ying1, PENG Bo2, XU Tie-feng1, NIE Qiu-hua1, ZHANG Xiang-hua1, 3 . Energy Transfer and Mid-Infrared Luminescence Properties of Tm3+/Dy3+ Codoped Chalcohalide Glasses [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(09): 2321-2325. |
| [2] |
ZHANG Peng-jun1, DAI Shi-xun1, 2*, LE Fang-da1, PENG Bo2, XU Tie-feng1, NIE Qiu-hua1, ZHANG Xiang-hua1, 3 . Mid-Infrared Emission and Multiphonon Relaxation in Tm3+-Doped Ge-Ga-Se Glasses[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(06): 1464-1468. |
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