研究了在激光脉冲能量和激光脉冲宽度一定时激光光斑面积对多光子电离离子产量的影响。
The laser facula area has some effects on the ion yield of multi photon ionization process.
结果表明，稳态光生电势在光照射范围外呈直线分布，PSD 探测到的是光斑的能量重心位置，与光斑面积大小和能量分布无关。
The results show that the steady-state photo-generated potential outside the light illumination range presents linear distribution and the information detected by PSD is the energy center of spot.
以提高耐磨性为主的大面积激光相变硬化必须采用光斑搭接方法，在搭接处的回火带是不可避免的。
The big area laser transformation hardening must adopt the methods of facular joint in giving priority to attrition, and the tempering zone can't be avoided in the joint.
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