虚共心腔变能量打孔的研究

Investigation of drilling with false concentric resonator of changeable energy

目前，对于多脉冲激光打孔，往往都是采用平行平面腔而脉冲能量采用平均分配法。我们认为这对打孔的精度，表面质量及其重复性来说是不太有利的。通过对谐振腔型的输出特性以及对脉冲能量的合理分配所进行的分析与实验表明，采用虚共心腔变能量打孔，孔的精度、表面质量及其重复性是可以得到改善的，特别是在降低打孔的锥度方面有一定突破。

At present, plane parallel resonator is often used in multipulse laser drilling with average distribution of pulse energy. We consider it is disadvantageous in regard to accuracy, surface finishing and reproducibility for the drilled holes. Through analysis and experiments on output characteristics of resonators as well as rational distribition of pulse, energy, improvement in accuracy, surface finishing and repoducibility of the .drilled holes can be achieved, especially in improving their taper, by using false concentric resonator with changeable energy.