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Laser-driven performance of the Al/Al2O3/Al multi-layer flyer

To assess the effect of the Al2O3 layer on the performance of a laser-driven flyer, the photonic Doppler velocimetry (PDV) and the polyvinylidene fluoride (PVDF) piezoelectric film were used. The experiment results show that because of the addition of Al2O3 insulation layer the velocity of the Al/Al2O3/Al multi-layer flyer decreased 4.8% in comparison with the Al single-layer flyer, but the impact stress increased 61.4%, up to 870 MPa at 248 mJ laser energy. Moreover, the planarity and the integrity of the flyer plate were improved.