激光技术及强激光与物质相互作用实验

利用科研成果，开设激光技术及强激光与物质相互作用实验，让学生了解强激光与物质相互作用时的2个典型效应：二次非线性光学效应，高压冲击波（光力学）效应，实现了科研与实验教学的紧密结合。     

Study on the optimum parameters for laser-solid interaction

The optimum parameters for laser propulsion are discussed, such as laser induced pressure on targets, interaction parameters (Cm, Isp) and optimum laser intensity Is, etc. It is verified that the larger laser power density will induce higher thrusting force. It is also found that, to drive a 1.010-kg target during confined laser ablation in vacuum and a 17.45-g one during direct laser ablation in air at the standard pressure, the needed minimum power intensities are on the same order of magnitude.     

约束结构下激光冲击波特性实验研究

 在约束结构下用短脉冲强激光对不同形状的铝片进行了冲击对比实验,研究了约束层和表面黑色涂层的作用。进行了水约束层作用的实验，所得的应力波强度与无约束层时相比有大幅度提高，但低于理论预测值。比较实验结果发现，黑色涂层更主要的作用是防止靶表层的烧蚀破坏，而冲击过后剩余的涂层会明显地衰减传向靶中的应力波。对于实际工程应用中有重大意义的非规则平面情形下的约束机制，实验表明，在曲率半径大于400mm时平面约束结构的作用依然有效。