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采用固相反应方法,制备了Er3+离子浓度为0.5 at.%,Yb掺杂浓度范围为0.0— 6.0 at.%的Er/Yb共掺激光玻璃,并对激光玻璃的吸收光谱和光致荧光光谱进行了分析.研究 结果显示,Yb3+掺杂对Er3+在980 nm附近的吸收起到了非常显著的 增强作用.在 980 nm的激光抽运下,激光玻璃在1530 nm处的光致发光强度随着Yb离子浓度 的增加而先增大后减小, 当Yb3+离子浓度为Er3+离子浓度6倍时光 致发光强度达到最大值.同时还发现了Yb3+对Er3+的光致荧光光谱 的展宽作用,并讨论了荧光光谱的展宽机理.
关键词:
Er/Yb共掺玻璃
光致发光
吸收光谱 相似文献
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In this letter,we propose and demonstrate a simple and novel method for fiber chromatic dispersion(CD) measurement based on microwave photonic technique.The radio frequency(RF) signal is modulated simultaneously on two light-waves with different wavelengths,and the light-wave carrying RF signals transmit through the dispersive medium under test.CD can be obtained by monitoring the power changing of the interference RF signals after photo detector.The CD values of the single-mode and dispersion compensation fibers are both measured within the wavelength range from 1 525 to 1 605 nm,which verifies the feasibility of this method. 相似文献
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A photonic approach for measuring microwave frequency over a wide bandwidth is proposed.An optic group delay line composed of several magneto-optical switches and a 1.6-km single-mode fiber is used as a tunable dispersive medium in the measurement setup.A minimum frequency accuracy of 80 MHz in the range of 1-20 GHz is achieved experimentally. 相似文献
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采用固相反应方法制备了Er/Y共掺激光玻璃,其中Er3+浓度分别为0.5at%和1.0at%,所对应的Y3+浓度的变化范围分别为0.0at%—2.5at%和0.0at%—5.0at%.通过吸收光谱、瞬态和稳态光致发光光谱测量,研究了Y共掺对Er3+吸收截面、发射截面、荧光寿命和光致荧光特征的影响.研究结果表明:Y共掺杂导致1530nm附近的吸收峰宽化,对Er3+的吸收起到了一定的增强作用,并且这种宽化作用随着Er关键词:
Er/Y共掺玻璃
光致荧光
荧光寿命 相似文献
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