论文标题
在超快激光器辐照的融合二氧化硅的异常依赖性弹性特性上
On the abnormal temperature dependent elastic properties of fused silica irradiated by ultrafast lasers
论文作者
论文摘要
具有材料的热不变弹性性能的材料对于共振设备的频率和精度设备的尺寸稳定性感兴趣。在这里，我们证明可以使用飞秒激光照射可以局部降低无定形二氧化硅的弹性温度系数（TCE）。值得注意的是，自组织激光诱导的修饰显示TCE的降低超过50％。这种显着降低的起源归因于在激光修饰区的细胞多层结构中存在亚微米永久性致密区域。
Materials with thermal-invariant elastic properties of materials are of interest for resonant device frequency and dimensional stability of precision devices. Here, we demonstrate that the temperature coefficient of elasticity (TCE) of amorphous silica can be locally reduced using femtosecond laser irradiation. Notably, a self-organized laser-induced modification shows a decrease of the TCE beyond 50%. The origin of this dramatic decrease is attributed to the presence of sub-micron permanent densified zones within the fine multi-layers structure of the laser-modified zone.
