Palmier S, Neauport J, Baclet N, Lavastre E, Dupuy G
Commissariat à l'Energie Atomique, Centre d'ETudes Scientifiques et Techniques d'Aquitaine, BP2, F-33114 Le Barp, France.
Opt Express. 2009 Oct 26;17(22):20430-9. doi: 10.1364/OE.17.020430.
We report an experimental investigation of high reflection mirrors used to fabricate gratings for pulse compression application at the wavelength of 1.053microm. Two kinds of mirrors are studied: the mixed Metal MultiLayer Dielectric (MMLD) mirrors which combine a gold metal layer with some e-beam evaporated dielectric bilayers on the top and the standard e-beam evaporated MultiLayer Dielectric (MLD) mirrors. Various samples were manufactured, damage tested at a pulse duration of 500fs. Damage sites were subsequently observed by means of Nomarski microscopy and white light interferometer microscopy. The comparison of the results evidences that if MMLD design can offer damage performances rather similar to MLD design, it also exhibits lower stresses; being thus an optimal mirror substrate for a pulse compression grating operating under vacuum.
我们报告了一项关于用于制造脉冲压缩光栅的高反射镜的实验研究，该光栅应用于波长为1.053微米的情况。研究了两种类型的镜子：混合金属多层介质（MMLD）镜，其在顶部将金金属层与一些电子束蒸发的介质双层相结合；以及标准的电子束蒸发多层介质（MLD）镜。制造了各种样品，在500飞秒的脉冲持续时间下进行损伤测试。随后通过诺马斯基显微镜和白光干涉显微镜观察损伤部位。结果比较表明，如果MMLD设计能够提供与MLD设计相当的损伤性能，那么它还表现出较低的应力；因此，它是在真空中运行的脉冲压缩光栅的最佳镜基板。
