强激光束对运动物体的加热

High power laser beam heating up the moving body

利用热传导理论分析了强激光对运动物体的加热问题，得出了物体表面温度、激光功率密度、光斑尺寸及光斑相对于物体运动速度之间的关系。结果表明，当激光光斑相对于物体表面运动时，表面峰值温度明显降低；在大光斑情况下，只要ｕｔ＜ω，光斑运动速度对物体表面峰值温度影响很小。

The problem of high power laser heating up the moving body was studied using the heat conduction theory, and the relationship between the surface temperature, laser power, light spot size and the moving speed of the body was gained. It shows that the maximum temperature decreases obviously when the light spot moves with respect to the surface. But to the large spot, the affection to the surface temperature is small when ut<ω .