| Cr^4＋：YAG,Cr^4＋：Mg2SiO4近红外荧光辐射温度特性研究 |
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| 引用本文： | 吴涛,邓佩珍.Cr^4＋：YAG,Cr^4＋：Mg2SiO4近红外荧光辐射温度特性研究[J].光学学报,1997,17(7):66-869. |
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| 作者姓名： | 吴涛 邓佩珍 |
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| 作者单位： | [1]复旦大学物理系 [2]中国科学院上海光学精密机械研究所 |
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| 摘 要： | 测量了Ｃｒ＾４＋，ＹＡＧ、Ｃｒ＾４＋，Ｍｇ２ＳｉＯ４晶体在室温和液氮温度下的荧光光谱，吸收光谱和激发态寿命，讨论了温度变化时，两种晶体中Ｃｒ＾４＋近红外辐射积分强度变化与激光发态寿命变化的关系，得出结论：在７７Ｋ￣３００Ｋ范围内，Ｃｒ＾４＋的＾３Ｔ２能级荧光辐射截面本身受温度影响不大，Ｃｒ＾４＋辐射荧光的变化，主要是由无辐射弛豫速率随温度变化而引起的。
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| 关 键 词： | 荧光光谱 温度 辐射截面 近红外 激光晶体 |
| 收稿时间： | 1996/7/27 |
Temperature Character of the Near Infrared Fluorescent Emission of Cr4+:YAG and Cr4+:Mg2SiO4 Crystals |
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| Wu Tao,Sun Diechi,Li Fuming.Temperature Character of the Near Infrared Fluorescent Emission of Cr4+:YAG and Cr4+:Mg2SiO4 Crystals[J].Acta Optica Sinica,1997,17(7):66-869. |
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| Authors: | Wu Tao Sun Diechi Li Fuming |
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| Abstract: | We measured the emission spectra, absorption spectra and the exited state life time of Cr 4+ :YAG and Cr 4+ :Mg 2SiO 4 crystals at room temperature and liquid nitrogen temperature respectively. The variation of the integral fluorescent intensities at the two different temperature was obtained. Considering it with the variation of the exited state life time, we could draw a conclusion that in the range of 77 K to 300 K, the influence of temperature on the emission cross section of Cr 4+ is relatively small. The change of the fluorescent intensity is mainly because of the change of non emissive relaxation rate with temperature. |
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| Keywords: | Cr4+:YAG Cr4+:Mg2SiO4 fluorescent spectrum temperature emission cross section |
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