皮秒激光脉冲冲击钻孔深度极限的估计。

Estimation of the depth limit for percussion drilling with picosecond laser pulses.

作者信息

Förster Daniel J, Weber Rudolf, Holder Daniel, Graf Thomas

出版信息

Opt Express. 2018 Apr 30;26(9):11546-11552. doi: 10.1364/OE.26.011546.

DOI:10.1364/OE.26.011546

Abstract

We present a model to predict the final depth of percussion-drilled holes that are produced with picosecond laser pulses in metals. It is based on the assumption that boreholes always have conical geometries when the drilling process terminates. We show that the model is valid for various process parameters when drilling in stainless steel. This was even confirmed by drilling with 3 mJ pulses, which resulted in a 10 mm deep borehole without thermal damage.

摘要

我们提出了一个模型，用于预测在金属中用皮秒激光脉冲产生的冲击钻孔的最终深度。该模型基于这样一个假设：当钻孔过程结束时，钻孔总是具有锥形几何形状。我们表明，该模型在不锈钢钻孔时对各种工艺参数均有效。用3 mJ脉冲进行钻孔甚至证实了这一点，该脉冲产生了一个10毫米深的钻孔，且无热损伤。