【摘 要】
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The absorption and emission spectra of Nd3+:GdMgB5O10 crystal were inves- tigated. Based on Judd-Ofelt theory the three parameters of oscillator strength were
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The absorption and emission spectra of Nd3+:GdMgB5O10 crystal were inves- tigated. Based on Judd-Ofelt theory the three parameters of oscillator strength were obtained as follows: ?2 = 2.099×10-20 cm2, ?4 = 4.599×10-20 cm2 and ?6 = 5.139×10-20 cm2. The fluorescence branch rations were also obtained: β1 = 0.424, β2 = 0.474, β3 = 0.094 and β4 = 0.005. The radiative lifetime is 416 μs and quantum efficiency ηc 9.13%. The emission cross section σp (1.06 μm) is 4.38×10-19 cm2.
The absorption and emission spectra of Nd3 +: GdMgB5O10 crystal were inves- tigated. Based on Judd-Ofelt theory the three parameters of the oscillator strength were obtained as follows:? 2 = 2.099 × 10-20 cm2,? 4 = 4.599 × 10-20 cm2 and? 6 = 5.139 × 10-20 cm2. The fluorescence branch rations also also obtained: β1 = 0.424, β2 = 0.474, β3 = 0.094 and β4 = 0.005. The radiative lifetime is 416 μs and the quantum efficiency ηc 9.13%. The emission cross section σp (1.06 μm) is 4.38 × 10-19 cm2.
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