Advanced bismuth-doped lead-germanate glass for broadband optical gain devices
Advanced bismuth-doped lead-germanate glass for broadband optical gain devices
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DOI：
10.1364/josab.25.001380
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发表时间：
2008-08
影响因子：
1.9
通讯作者：
M. Hughes;Takenobu Suzuki;Y. Ohishi
中科院分区：
文献类型：
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作者：
M. Hughes;Takenobu Suzuki;Y. Ohishi
我们制备了一系列组成为94.7-xGeO_2 - 5Al_2 O_3 - 0.3Bi_2 O_3-xPbO（x =0- 24 mol.%）的玻璃。铋的特征吸收带集中在500，700，800和1000 nm的观察。PbO的加入降低了铋的吸附强度。添加3%-4%的PbO导致寿命增加50%，量子效率增加20倍，并且在0%PbO组合物上的发射截面和寿命的乘积增加28倍。我们建议，800 nm的吸收带涉及不同的铋中心比其他吸收带。
We fabricated a series of glasses with the composition 94.7-χGeO2-5Al2O3-0.3Bi2O3-χPbO (χ=0-24mol.%). Characteristic absorption bands of bismuth centered at 500, 700, 800, and 1000 nm were observed. Adding PbO was found to decrease the strength of bismuth absorption. The addition of 3%-4% PbO resulted in a 50% increase in lifetime, a 20-fold increase in quantum efficiency, and a 28-fold increase in the product of emission cross section and lifetime on the 0% PbO composition. We propose that the 800 nm absorption band relates a different bismuth center than the other absorption bands.