结果表明，脉冲co 2激光功率密度经三次反射激光聚焦系统达到空气击穿阈值，实验中观察到等离子体发光现象。
The results show: pulse power density from CO2 laser reaches air breakdown threshold through thrice reflecting focus system, and plasma radiation phenomena is observed in the experiment.
根据激光吸收区等离子体组分与激光功率密度的关系判定激光支持爆轰波(LSDW)的点燃阈值。
The ignition threshold of laser supported detonation wave (LSDW) can be determined based on the component variation of plasma in the laser absorption zone with laser power density.
当有其他物体遮挡在焦点前，入射激光的功率密度小于SBS的阈值，SBS不能发生。
When there is an object present in front of the focus, it leads to lower incident intensity and then SBS does not occur.
对不同功率密度激光作用的模拟结果进行分析，并求解了纯铝熔化破坏的激光功率阈值。
The simulation result with different power laser density is discussed, and the laser power threshold density for aluminum is calculated.
对不同功率密度激光作用的模拟结果进行分析，并求解了纯铝熔化破坏的激光功率阈值。
The simulation result with different power laser density is discussed, and the laser power threshold density for aluminum is calculated.
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