The mutual influence between rare earth element doping and femtosecond laser-induced effects in Ga-As-Sb-S chalcogenide glass
The mutual influence between rare earth element doping and femtosecond laser-induced effects in Ga-As-Sb-S chalcogenide glass
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DOI：
10.1016/j.ceramint.2020.10.219
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发表时间：
2021-01-29
影响因子：
5.2
通讯作者：
Guo, Haitao
中科院分区：
文献类型：
--
作者：
Liu, Lutao;Chen, Fengyi;Guo, Haitao
研究了不同Tm ~（3+）浓度梯度掺杂的Ga_（0.8）As_（29.2）Sb_（10）S_（60）玻璃的飞秒激光损伤阈值（LIDT）以及激光损伤对玻璃发光性能的影响。当Tm ~（3+）浓度从0增加到5000 ppmw时，玻璃中的Tm ~（3+）掺杂显著降低了LIDT，从3394.8 mJ/cm ~ 2降低到1881.8 mJ/cm ~ 2。这与Tm ~（3+）在飞秒激光波长附近的吸收以及Tm ~（3+）掺杂引起的微结构变化有关。另一方面，飞秒激光改变了玻璃基质的元素分布和微观结构。虽然激光损坏了玻璃，但发光特性几乎没有受到影响。在此基础上，首次提出了掺稀土硫系玻璃的飞秒激光损伤机理。
Femtosecond laser-induced damage thresholds (LIDTs) of Ga0.8As29.2Sb10S60 glasses doped with gradient Tm3+ concentrations and the effects of laser-induced damage on the glass' luminescence properties were studied in this work. Tm3+ doping in the glass considerably decreased the LIDT, from 3394.8 to 1881.8 mJ/cm(2), when the Tm3+ concentration increased from 0 to 5000 ppmw. This was related to the absorption of Tm3+ around the femtosecond laser's wavelength and microstructural changes caused by the Tm3+ doping. On the other hand, the femtosecond laser changed the glass matrix's elemental distribution and microstructure. Although the laser damaged the glass, the luminescence properties were barely affected. Based on the changes, femtosecond laser damage mechanism of chalcogenide glass doped with rare earth element was firstly proposed.