Tóm tắt:

We observed the propagation of shockwave induced by focusing a nanosecond laser pulse on the surface of an epoxyresin block. The evolution of shockwave was observed within the first 1000 ns from irradiation. The shockwave energy was calculated based on the point-explosion model. The result indicated that the ablation process converted 60% of laser pulse energy into shockwave energy. We suggest that this result can be used for a simple estimation of shockwave energy in applications that use laser ablation of solids in atmospheric condition.