Cvecek Kristian, Odato Rainer, Dehmel Sarah, Miyamoto Isamu, Schmidt Michael
Opt Express. 2015 Mar 9;23(5):5681-93. doi: 10.1364/OE.23.005681.
Glass welding by ultra-short laser pulses provides hermetic welding seams with high mechanical stability. The required distance between the samples must be extremely small (<100nm), otherwise cracks will form inside the seam reducing its stability. However, to achieve such small gaps the roughness of the samples must be small enough necessitating additional polishing. Additionally, Van-der-Waals forces grow substantial at such distances thereby effectively preventing sample movement and an easy and precise sample alignment. Here we present a method utilizing ultra-short laser pulses which exploits a volume expansion of irradiated glass enabling the joining of glass plates across gaps of up to 1µm.
通过超短激光脉冲进行玻璃焊接可提供具有高机械稳定性的气密焊缝。样品之间所需的距离必须极小（<100nm），否则焊缝内部会形成裂纹，降低其稳定性。然而，为了实现如此小的间隙，样品的粗糙度必须足够小，这就需要额外的抛光。此外，范德华力在这样的距离下会显著增强，从而有效地阻止样品移动以及轻松精确地对齐样品。在此，我们提出一种利用超短激光脉冲的方法，该方法利用被辐照玻璃的体积膨胀，能够跨越高达1µm的间隙连接玻璃板。
