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Alternative TitleSpectroscopic Properties and Energy Transfer of Erbium-doped Tellurite Glass
杨建虎; 戴世勋; 李顺光; 胡丽丽; 姜中宏
Source Publication发光学报
Abstract测试了掺Er碲酸盐玻璃在974nm LD泵浦下的吸收光谱、荧光光谱和上转换光谱,应用McCumber理论计算了Er~(3+)的受激发射截面,分析了碲酸盐玻璃中Er~(3+)离子的上转换发光机制,研究了Yb~(3+)离子对Er~(3+)离子上转换发光强度的影响以及两者之间的能量传递特性。
Other AbstractThe absorption spectra of Er~(3+) ion and Yb~(3+) ion in tellurite glass were investigated. The peak absorption were marked according to the absorption transition of Er~(3+) and Yb~(3+), the energy levels of Er~(3+) and Yb~(3+) ions in tellurite glass were obtained according to the absorption spectra. The emission spectrum on Er~(3+) ion in tellurite glass was studied. The stimulated emission cross section was calculated using McCumber theory and the FWHM was obtained according to the emission spectrum. Er~(3+) ion show higher emission cross section (sigma_p = 7.5 * 10~(-21)cm~2) and larger FWHM (FWHM=66nm) in tellurite glass than those in other glass hosts, which are very important parameters for optical amplifiers to realize broadband and high gain amplification. The upconversion spectra of Er~(3+) in in tellurite glasses were measured and analyzed. The much lower phonon energy of tellurite glass makes it has different upconversion mechanism compared with other glasses with relative higher phonon energy. The relative longer lifetime of ~4I_(15/2) level of Er~(3+) ion in tellurite glass produces the upconversion process ~4I_(11/2) + ~4I_(11/2)~4F_(7/2) + ~4I_(15/2) much more serious, and the four emission transitions ~4F_(7/2)~4I_(15/2), ~2H_(11/2)~4I_(15/2), ~4S_(3/2)~4I_(15/2) and ~4F_(9/2)~4I_(15/2) which corresponds to 486, 530, 550 and 660nm emission, respectively, become obvious. Furthermore, the upconversion intensity enhances with the increase of Yb~(3+) concentration. Upconversion emission is very harmful for fiber amplifiers, which not only reduces the efficiency of bump light, but also deteriorates the noise figure of the amplifiers, so it is important to reduce upconversion phenomenon as much as possible. The energy transfer mechanism between Er~(3+) and Yb~(3+) ion were analyzed. The energy transfer coefficients and efficiencies between Yb~(3+) and Er~(3+) were calculated. At a certain Yb~(3+) concentration, the forward energy transfer coefficient and efficiency hardly change while the back energy transfer coefficient and efficiency increase monotonically. So the effective sensitization of Yb~(3+) to Er~(3+) is appropriate only at a certain range of Yb~(3+) concentration. The right selection of Yb~(3+) concentration is needed in order to realize effective bump.
Funding Organization国家自然科学基金资助项目(69988006) ; 上海市光科技资助项目 ; 国家自然科学基金资助项目(69988006) ; 上海市光科技资助项目
Indexed ByCSCD
Funding Organization国家自然科学基金资助项目(69988006) ; 上海市光科技资助项目 ; 国家自然科学基金资助项目(69988006) ; 上海市光科技资助项目
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Document Type期刊论文
Affiliation1.杨建虎, 中国科学院上海光学精密机械研究所, 上海 201800, 中国.
2.戴世勋, 中国科学院上海光学精密机械研究所, 上海 201800, 中国.
3.李顺光, 中国科学院上海光学精密机械研究所, 上海 201800, 中国.
4.胡丽丽, 中国科学院上海光学精密机械研究所, 上海 201800, 中国.
5.姜中宏, 中国科学院上海光学精密机械研究所, 上海 201800, 中国.
Recommended Citation
GB/T 7714
杨建虎,戴世勋,李顺光,等. 掺铒碲酸盐玻璃的光谱性质和能量传递[J]. 发光学报,2002,23(5):485.
APA 杨建虎,戴世勋,李顺光,胡丽丽,&姜中宏.(2002).掺铒碲酸盐玻璃的光谱性质和能量传递.发光学报,23(5),485.
MLA 杨建虎,et al."掺铒碲酸盐玻璃的光谱性质和能量传递".发光学报 23.5(2002):485.
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