Lamaignère Laurent, Dupuy Gabriel, Donval Thierry, Grua Pierre, Bercegol Hervé
Commissariat á l'Energie Atomique-Direction des Applications Militaires Cesta, Le Barp, France.
Appl Opt. 2011 Feb 1;50(4):441-6. doi: 10.1364/AO.50.000441.
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.
由于众多参数（如光束面积和脉冲几何形状）之间的相互作用，使用不同设备获得的脉冲激光损伤密度测量结果很难进行比较。在实际的大光束条件下，这些参数与实验室测量中的参数有很大不同。这种差异可能会产生重大影响；如果是这样，甚至不能认为激光损伤密度控制是一个真正的测量过程。本文探讨了这一问题。在一个高功率激光设备上对厘米级大光束进行了测试，并根据参数研究进行了实验，同时与小光束实验室测试进行了比较。结果表明，在计算出的误差范围内，大光束和小光束获得的激光损伤密度是相等的。
