激光微烧蚀掺碳PVC推进性能研究

激光微烧蚀靶材产生的力学性能是表征激光微推进性能的重要指标,相关研究一直是激光微推进领域内讨论的热点。掺碳是一种提高激光与靶材耦合性能的重要手段,能够一定程度上改善激光微推进性能,不同掺杂程度所获得的推进性能也不同。采用单脉冲输出功率较低的半导体激光器和功率较高的YAG激光器,分别测量了不同功率密度和能量注入情况下,微...

Study on the propulsion performance of doped PVC with laser micro ablation

The thrust performance of the laser micro ablation is the main important index for the laser micro propulsion.Carbon dopant could be a kind of important methods for improvement of coupling of the laser and target.Diode laser with lower power and YAG laser with higher power are adopted to ablate the doped PVC.Torsion pendulum with laser interferometry is applied to measure micro impulse,and analytical balance for measurement of micro ablated mass is used.The propulsion parameters of PVC doped with different fractions of carbon ablated by diode and YAG laser are measured.The influences of different fractions of carbon and laser power intensity to impulse coupling coefficient,specific impulse and efficiency are analyzed.