Tm3+-Doped Chalcohalide Glass for Optical Amplifiers at 1.22 and 1.47 μm
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概要
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50GeSe2--25In2Se3--25CsI chalcohalide glass was prepared with the addition of Tm3+ in 0.1--1.0 wt % concentrations. Radiative parameters evaluated by the Judd--Ofelt analysis suggest a strong covalence nature of the host. Emissions peak at 1.22 and 1.46 μm were observed with the 808 nm laser excitation. The 1.22 μm one is attributed to the Tm3+:\text{^{3}H_{5}}\rightarrow \text{^{3}H_{6}} transition. The Raman spectra of the host suggest that the I-rich local environment of Tm3+ promotes the strong 1.22 μm emission. The emission intensity comes to the maximum at Tm3+ concentration of 0.7 and 0.5 wt % for the 1.22 and 1.47 μm emissions respectively. In addition, its potential application as the host material for novel optical amplifiers was discussed.
- 2011-10-25
著者
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Chen Wei
Shanghai Inst. Ceramics Chinese Acad. Sci. Shanghai Chn
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Luo Lan
Shanghai Institute Of Ceramics Chinese Academy Of Sciences
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Xiong Huihua
Graduate School of Chinese Academy of Sciences, Shanghai 200031, P. R. China
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Tang Gao
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China
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