Research on the Ablation Characteristics and Thermomechanical Coupling Matching of Continuous-Wave/Pulsed Combined Lasers

In laser processing and electro-optical countermeasures, the ablation efficiency on target is of great importance. Compared with traditional single irradiation, by continuous-wave (CW)/pulsed combined has advantages high efficiency, strong controllability, low energy output requirements. However, current research synergistic mechanism matching irradiation requires improvement. this study, damage experiments were mainly conducted two modes laser, CW/millisecond (CW/ms) CW/nanosecond (CW/ns) laser. The temperature distribution, rate, range under different conditions tested quantitatively. characteristics thermomechanical coupling analysed physically modelled. results showed that compared pulsed alone, rate CW/ms mode was greater approximately one order magnitude, while three orders magnitude. Moreover, can be regarded as impact pressure distribution melting pool. study may offer guidance for further improving enhancement