Broadband tunable near-infrared emission of Bi-doped composite germanosilicate glasses
Broadband tunable near-infrared emission of Bi-doped composite germanosilicate glasses
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DOI：
10.1039/c2jm15606g
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发表时间：
2012-01
影响因子：
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通讯作者：
N. Zhang;J. Qiu;G. Dong;Zhongmin Yang;Qinyuan Zhang;M. Peng
中科院分区：
文献类型：
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作者：
N. Zhang;J. Qiu;G. Dong;Zhongmin Yang;Qinyuan Zhang;M. Peng
在808 nm半导体激光器（LD）的激发下，观察到掺铋锗硅酸锂铝玻璃的宽带近红外（NIR）发射。随着GeO 2浓度的增加，近红外发射的强度先增加后减小。最佳组成为13 Li 2 O-23 Al 2 O3 - 20 GeO 2 - 43 SiO2 - 1Bi 2 O3（mol%）。NIR发射的峰位置和强度强烈地依赖于激发波长。我们将1100 nm和1260 nm的发射分别归因于Bi+的3 P1 → 3 P0跃迁和Bi 0的2D 3/2 → 4S 3/2跃迁。所提出的模型解释了所观察到的Bi掺杂玻璃和光纤的近红外发光现象，这是以前未知的。
A broadband near-infrared (NIR) emission from Bi-doped lithium aluminum germanosilicate glasses is observed when excited by an 808 nm laser diode (LD). The intensity of the NIR emission increases primarily, and then decreases with increasing GeO2 concentration. The optimized composition is 13Li2O–23Al2O3–20GeO2–43SiO2–1Bi2O3 (mol%). The peak position and intensity of the NIR emission depend strongly on excitation wavelength. We attribute the emissions at 1100 nm and 1260 nm to 3P1 → 3P0 transition of Bi+ and 2D3/2 → 4S3/2 transition of Bi0, respectively. The proposed model explains the observed NIR luminescence phenomena of Bi-doped glasses and fibers, which was previously unknown.