论文标题
在室温下融合二氧化硅的单轴静电应力松弛
On the uniaxial static stress relaxation in fused silica at room temperature
论文作者
论文摘要
融合二氧化硅在室温下是否放松的静态应力是否仍在争议中的问题。在这里，我们报告了在室温下融合二氧化硅中的应力松弛动力学的实验数据，在静态载荷条件下最多2 GPA应力水平。我们的测量是使用方法的创新组合进行的。飞秒激光器用于以非接触方式准确地加载单片显微镜测试束，并使用飞秒激光处理和化学蚀刻进行制造，而在干燥和正常的大气条件下，在长时间的延长时间内，使用光弹性在长时间使用光弹性来连续监测应力。结果至关重要，不仅对于使用压力引起的双折射的光子学设备，而且对于承受静态载荷的弯曲也是如此。
The question of whether static stress in fused silica relaxes at room temperature is still under debate. Here, we report experimental data investigating stress relaxation dynamics in fused silica at room temperature and up to 2 GPa stress levels under static loading conditions. Our measurements are performed using an innovative combination of methods; a femtosecond laser is used to accurately load a monolithic microscale test beam in a non-contact manner, fabricated using femtosecond laser processing and chemical etching, while the stress is continuously monitored using photoelasticity over an extended period spanning several months, in both dry and normal atmospheric conditions. The results are of practical importance, not only for photonics devices making use of stress-induced birefringence but also for flexures subjected to static loads.
