High content Er3+ doped ZBLAN glass: The spectral characteristics and high slope efficiency MIR laser investigation
High content Er3+ doped ZBLAN glass: The spectral characteristics and high slope efficiency MIR laser investigation
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DOI：
10.1016/j.jallcom.2020.158170
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发表时间：
2021-06
影响因子：
6.2
通讯作者：
Haotian Gan;Kelun Xia;Yiming Gui;Xusheng Zhang;N. Zeng;Zhenfei Cao;Xunsi Wang;S. Dai;
中科院分区：
文献类型：
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作者：
Haotian Gan;Kelun Xia;Yiming Gui;Xusheng Zhang;N. Zeng;Zhenfei Cao;Xunsi Wang;S. Dai;
制备并研究了高Er ~（3+）含量ZBLAN玻璃。玻璃具有2.5-8.0 µm的宽红外透射率范围，这意味着较低的最大声子能量。通过测试和分析不同穿透深度下的荧光光谱和寿命曲线，得到了不受亚吸收影响的样品的本征发射光谱和寿命。在980 nm激发下，最大发射截面和2.7 µm的寿命分别为6.10 × 10− 21 cm 2和6.49 ms，表明高浓度掺杂具有更大的激光品质因子。根据速率方程和传输方程，建立了级联和非级联光纤激光器模型，对2.7 μm光纤激光器进行了研究。在抽运波长为980 nm，光纤背景损耗为0.1dB/m时，斜率效率可达40.38%。高发射截面、长荧光寿命和高斜率效率输出使得重掺Er 3+的ZBLAN玻璃成为中红外激光器的理想基质材料。
The ZBLAN glass with high content of Er3+was prepared and studied. The glass has a wide infrared transmittance range of 2.5–8.0 µm, which means a lower maximum phonon energy. By testing and analyzing the fluorescence spectrum and lifetime curves under different penetration depths, the intrinsic emission spectrum and lifetime of the sample are obtained without the influence of sub-absorption. Under 980 nm excitation, the maximum emission cross section and the lifetime of 2.7 µm are 6.10 × 10−21cm2and 6.49 ms, indicating that high-concentration doping has a larger laser quality factor. According to the rate equation and transmission equation, cascaded and non-cascaded fiber laser models are established to conduct research on 2.7 µm fiber lasers. The slope efficiency can reach 40.38% at a pump wavelength of 980 nm and a fiber background loss of 0.1 dB/m. The high emission cross section, long fluorescence lifetime and high slope efficiency output make ZBLAN glass heavily doped with Er3+an ideal host material for mid-infrared lasers.