Effects of melting temperature and composition on spectroscopic properties of Er3+-doped bismuth glasses
Effects of melting temperature and composition on spectroscopic properties of Er3+-doped bismuth glasses
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熔化温度和成分对Er3掺杂铋玻璃光谱性能的影响
DOI：
10.1364/ome.6.000279
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发表时间：
2016-01-01
影响因子：
2.8
通讯作者：
Yuan, Libo
中科院分区：
文献类型：
--
作者：
Chu, Yushi;Ren, Jing;Yuan, Libo
铋玻璃的光谱性质受制备条件的影响很大。本文研究了熔融温度和Bi2O_3与SiO_2的浓度比对掺Er3+的BiO_2O_3-B_2O_3-SiO_2铋玻璃SPS的影响。结果表明，较低的熔融温度有利于获得大而宽的Er~(3+)增益。然而，当在高温下熔化时，玻璃会变暗，这不利于这些材料在光纤放大器中的应用。另一方面，我们也证明了在激光增益和阈值之间必须在Bi2O_3和SiO_2的最佳浓度比之间进行折衷。用Judd-Ofet(JO)方法拟合得到了Er3+1.55微米辐射的理论辐射跃迁速率和量子效率。用光学碱度的概念可以解释表征Er3+周围局域化学环境的JO参数的变化。(C)2015年美国光学学会
The spectroscopic properties (SPs) of bismuth glasses are strongly influenced by the preparation conditions. Here, we studied the effects of melting temperature and concentration ratio of Bi2O3 to SiO2 on the SPs of Er3+ doped Bi2O3-B2O3-SiO2 bismuth glasses. We have shown that the low melting temperature is preferable to achieve large and broad gain of Er3+ ions. When melted at high temperatures, however, the glasses get darkened which is against the application of these materials for optical fiber amplifiers. On the other hand, we have also shown that a compromise has to be made between the laser gain and threshold regarding the optimum concentration ratio of Bi2O3 to SiO2. Theoretical radiative transition rate and quantum efficiency of the 1.55 mu m emission of Er3+ have been obtained by Judd-Ofelt (JO) fitting. The variation of the JO parameters characterizing the local chemical environments around Er3+ can be explained based on the concept of optical basicity. (C)2015 Optical Society of America