Comparison of laser-induced surface damage density measurements with small and large beams: toward representativeness.
Comparison of laser-induced surface damage density measurements with small and large beams: toward representativeness.
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DOI：
10.1364/ao.50.000441
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发表时间：
2011-02
期刊：
影响因子：
1.9
通讯作者：
L. Lamaignère;G. Dupuy;T. Donval;P. Grua;H. Bercegol
中科院分区：
文献类型：
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作者：
L. Lamaignère;G. Dupuy;T. Donval;P. Grua;H. Bercegol
由于许多参数的相互作用，如光束面积和脉冲几何形状，在操作大光束条件下，与实验室测量结果有很大不同，因此在不同设备上获得的脉冲激光损伤密度测量结果很难进行比较。这种差异可能会产生重大影响；如果是这样，人们甚至不能假装激光损伤密度控制是一个真正的测量过程。在本文中，我们讨论了这个问题。根据参数研究，在高功率激光设备上进行了厘米级大光束试验，并与小光束实验室试验进行了比较。结果表明，大光束和小光束得到的激光损伤密度在计算误差条内相等。
Pulsed laser damage density measurements obtained with diverse facilities are difficult to compare, due to the interplay of numerous parameters, such as beam area and pulse geometry, which, in operational large beam conditions, are very different from laboratory measurements. This discrepancy could have a significant impact; if so, one could not even pretend that laser damage density control is a real measurement process. In this paper, this concern is addressed. Tests with large beams of centimeter size on a high-power laser facility have beam performed according to a parametric study and are compared to small beam laboratory tests. It is shown that laser damage densities obtained with large and small beams are equal, within calculated error bars.