Relationships between output power of laser diode and optical feedback coefficient, optical feedback coefficient and defocusing amount are numerically investigated.

数值研究了非相干光反馈时半导体激光器输出功率随反馈系数的变化关系以及待测物体离焦量与反馈系数的关系。

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And it is observed that laser power is the ultimate affection of joint strength, the defocusing amount is the weak influence, and the welding speed between the former affection factor.

进一步分析发现激光功率对接头强度的影响最大，焊接速度的影响仅次于激光功率，离焦量的影响最小。

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The effects of the laser power, defocusing amount and the scanning velocity tO the cleaning results are got by experiments; the cleaning threshold and the damage threshold are obtained.

通过实验，确定了激光功率、离焦量和扫描速度对清洗效果的影响，并最终确定激光清洗时的损伤阈值和清洗阈值。

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