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Cr,Tm:YAG晶体中Cr3+→Tm3+能量转移的温度特性
The EfFect of Temperature on Energy Transfer in Cr,Tm:YAG Crystal
【摘要】 测量了不同温度下Cr;Tm:YAC晶体的荧光光谱和荧光寿命,研究了温度对Cr3+→Tmn3+能量转移的影响。结果表明,随着温度不断升高,能量转移速率持续增加,能量转移效率先增加后下降,在120K出现极大值。
【Abstract】 The effect of temperature on energy transfer in Cr,Tm:YAG crystal has been studied. We find that temperature decreases the seperattion in energy of the 4T2 and 2E levels of Cr3+, leading at first to an increase in Cr3+ →Tin3+ energy transfer rate and then a decrease in Cr3+ →Tin3+ energy transfer efficiency. From 77 K to 450 K, the Cr3+ →Tin3+energy transfer is the most efficient at 120 K.
【关键词】 Cr;
Tm:YAG晶体;
能量转移;
温度特性;
【Key words】 Cr; Tm:YAG crystal; energy transfer; temperature effect;
【Key words】 Cr; Tm:YAG crystal; energy transfer; temperature effect;
【基金】 中国科学院“八五”重大攻关课题
- 【文献出处】 量子电子学报 ,CHINESE JOURNAL OF QUANTUM ELECTRONICS , 编辑部邮箱 ,1997年01期
- 【分类号】TN24
- 【下载频次】55