复合激光时序加载对毁伤效能的影响  

Influence of Irradiation Time Sequence of Combined Laser on Damage Effectiveness

作　　者：肖婧[1,2] 任钢 夏惠军[1] 张茂[1] 彭杰[1] Xiao Jing;Ren Gang;Xia Huijun;Zhang Mao;Peng Jie(Southwest Institute of Technical Physics,Chengdu,Sichuan 610041,China;College of Electronics and Information Engineering,Sichuan University,Chengdu,Sichuan 610041,China)

机构地区：[1]西南技术物理研究所,四川成都610041 [2]四川大学电子信息学院,四川成都610065

出　　处：《中国激光》2019年第11期146-152,共7页Chinese Journal of Lasers

摘　　要：复合使用连续激光与脉冲激光对金属靶材的烧蚀效果优于单一的连续激光或脉冲激光。为了给连续激光与脉冲激光复合作用模式的参数选择提供依据,采用试验研究与仿真研究相结合的手段,探究了复合激光时序加载对毁伤效能的影响,结果表明:在施加连续激光的过程中施加脉冲激光的毁伤效果最好;复合激光能显著缩短毁伤时间、增大烧蚀范围,且预热时间越长,造成的毁伤范围越大;复合激光中长脉冲激光能量过大将造成激光能量浪费,合理选择参数,实现连续激光的功率与长脉冲激光的能量匹配至关重要。The ablation effect of the combined continuous wave(CW) and pulsed lasers on metal targets is better than that of single CW or pulsed lasers. To optimize the parameter selection of the combined action of CW and pulsed lasers, both the experimental and simulation methods are used to study the influence of irradiation time sequence on damage effectiveness of the combined lasers. The results denote that the combined laser brings the best damage effectiveness when the pulsed laser irradiates during CW laser irradiation. The combined laser considerably reduces the damage time and increases the ablation range. Furthermore, the longer the preheating time, the larger the damage range. In case of the combined lasers, wastage of laser energy is observed if the energy of the long laser pulse becomes considerably high. Therefore, it is essential to select reasonable parameters for energy matching of CW laser power and long pulsed laser.

关 键 词：激光光学 激光损伤 激光烧蚀 复合激光 加载时序 能量配比 

分 类 号：TJ951[兵器科学与技术—武器系统与运用工程]