| Yb:FAP和Yb:C_3S_2-FAP晶体光谱的温度特性和选择激发 |
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| 作者单位： | 河南大学物理与信息光电子学院 开封475001
(毛艳丽)，中国科学院上海光学精密机械研究所 上海201800
(赵志伟，邓佩珍)，中国科学院上海光学精密机械研究所 上海201800(干福熹) |
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| 摘 要： | 报导了Yb :FAP和Yb :C3S2 _FAP晶体在不同温度下的吸收光谱和荧光光谱实验结果 ,研究发现由于电子_声子近共振耦合作用 ,Yb :FAP和Yb :C3S2 _FAP晶体均存在有明显的振动谱 ,Yb :FAP晶体的零声子线在低温下还劈裂为相差 10cm- 1 的两条线 .采用激光选择激发技术研究了Yb3 离子在FAP和C3S2 _FAP晶体中的格位特征 ,结果表明Yb3 离子在这两种基质中都只占据Ca(Ⅱ )格位 ,但由于CaF2 的挥发 ,导致了Ca(Ⅱ )格位的局部畸变 .
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| 关 键 词： | Yb:FAP晶体 Yb:C3S2-FAP晶体 光谱特性 选择激发 |
Temperature and selective excitation properties of the spectra for Yb:FAP and Yb:C_ 3S_ 2-FAP crystals |
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| Authors: | Mao Yan-Li Zhao Zhi-Wei Deng Pei-Zhen Gan Fu-Xi |
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| Institution: | Mao Yan-Li 1) Zhao Zhi-Wei 2) Deng Pei-Zhen 2) Gan Fu-Xi 2) 1) |
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| Abstract: | Experimental results of the absorption and fluorescence spectra of Yb:FAP and Yb:C 3S 2-FAP crystals at different temperatures have been reported in the paper. Due to the near resonance effects of electron-phonon coupling, there are obvious vibronic peaks in the spectra of Yb:FAP and Yb:C 3S 2-FAP crystals, and the zero-phonon line is split into two lines separated by 10cm -1. The site variation of Yb 3 in Yb:FAP and Yb:C 3S 2-FAP has been studied by means of laser selective excitation technique. The results show that Yb 3 ions only occupied Ca(II) sites in the FAP and C 3S 2-FAP crystals, and there are local distortions of Ca(II) sites, resulting from the volatilization of CaF 2. |
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| Keywords: | Yb:FAP crystal Yb:C3S 2-FAP crystal spectroscopic properties selective excitation |
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