材料科学
飞秒
激光器
红外线的
无定形固体
光学
分析化学(期刊)
化学
色谱法
物理
有机化学
作者
Yong Yan,Fan Yang,Shixun Dai,Peiqing Zhang,Zijun Liu,Guanshi Qin,Zhixu Jia
摘要
Fluorotellurite glasses based on TeO 2 -BaF 2 -Y 2 O 3 (TBY) with a broadband transmission window of 350–6000 nm, relatively low phonon energy, stable chemical and physical characteristics compared to fluoride glasses have been investigated to develop high-powered mid-infrared (MIR) fiber lasers. In this work, a series of xTeO 2 -(90-x)BaF 2 −10Y 2 O 3 (TBYx) (x = 60,65,70,75 mol%) fluorotellurite glasses were prepared with the conventional melting-quenching method in an argon glove box. Then, laser damage characteristics of glass samples under 3000 and 4000 nm MIR femtosecond laser with different pulses was compared and studied. The TBY60 glass has the highest damage threshold, which reaches 1.08 J/cm 2 and 0.852 J/cm 2 at 4000 nm and 3000 nm, respectively. The femtosecond laser-induced damage threshold (LIDT) of TBY glasses decreased from 1.08 to 0.782 J/cm 2 as TeO 2 content increased from 60 to 75 mol% at the wavelength of 4000 nm. In addition, the effect of pulse numbers is consistent with exponential defect accumulation model.
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