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采用Czochralski 法生长出光学质量的BaWO4:Tm3+单晶，利用X粉末衍射实验确定了不同掺杂浓度晶体的晶胞参数.测定了晶体的室温吸收光谱，应用Juud-Ofelt理论，拟合了光谱的3个强度参数，其值分别为Ω2=404×10-20cm2，Ω4=0509×10-20cm2，Ω
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关键词:
- BaWO4：Tm3+单晶 /
- 吸收谱 /
- 光谱参数 /
- 上转换发光
The BaWO4:Tm3+ single crystals of optical quality have been grown by the Czochralski technique. The lattice parameters of crystals with different doping concentrations were determined by XRD. The absorption spectra were measured at room temperature. And the optical parameters, such as transition line intensity, oscillator strength and absorption section were calculated by using Juud-Ofelt theory. The three intensity parameters were fitted to be Ω2=404×10-20cm2， Ω4=0509×10-20cm2，Ω6=0134×10-20cm2， respectively. The lifetime, branching ratio and integrated stimulated-emission cross section were obtained. Ultra-visible fluorescence was measured and analyzed. The red up-conversion luminescence with wavelengths 689 nm and 704 nm corresponding to the transition from 3F3 to 3H6 was observed under Ti-sapphire laser and LD laser, respectively.-
Keywords:
- BaWO4：Tm3+ crystal /
- absorption spectra /
- spectral parameters /
- up-conversion fluorescence
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物理学报. 2010, 59(1): 609-615.
doi: 10.7498/aps.59.609.
掺铥钨酸钡单晶生长和光谱研究
- 收稿日期: 2008-09-08
- 修回日期: 2008-12-21
- 刊出日期: 2010-01-15
摘要: 采用Czochralski 法生长出光学质量的BaWO4:Tm3+单晶，利用X粉末衍射实验确定了不同掺杂浓度晶体的晶胞参数.测定了晶体的室温吸收光谱，应用Juud-Ofelt理论，拟合了光谱的3个强度参数，其值分别为Ω2=404×10-20cm2，Ω4=0509×10-20cm2，Ω
关键词:
English Abstract
The growth and spectral characteristics of BaWO4:Tm3+ single crystal
- Received Date:
08 September 2008
- Accepted Date:
21 December 2008
- Published Online:
15 January 2010
Abstract: The BaWO4:Tm3+ single crystals of optical quality have been grown by the Czochralski technique. The lattice parameters of crystals with different doping concentrations were determined by XRD. The absorption spectra were measured at room temperature. And the optical parameters, such as transition line intensity, oscillator strength and absorption section were calculated by using Juud-Ofelt theory. The three intensity parameters were fitted to be Ω2=404×10-20cm2， Ω4=0509×10-20cm2，Ω6=0134×10-20cm2， respectively. The lifetime, branching ratio and integrated stimulated-emission cross section were obtained. Ultra-visible fluorescence was measured and analyzed. The red up-conversion luminescence with wavelengths 689 nm and 704 nm corresponding to the transition from 3F3 to 3H6 was observed under Ti-sapphire laser and LD laser, respectively.
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