Ultraviolet-laser-induced periodic surface structures.
Ultraviolet-laser-induced periodic surface structures.
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DOI：
10.1103/physrevb.40.2031
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发表时间：
1989-08
期刊：
影响因子：
--
通讯作者：
Clark;Emmony
中科院分区：
文献类型：
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作者：
Clark;Emmony
我们报告的第一个系统的研究性质的紫外激光诱导的周期性表面结构，可以产生名义上光滑的表面。本研究调查的依赖性的图案，产生的锗和铝的KrF 249 nm的激光入射能量密度和偏振和入射角的光。在高Auence，我们表明，结果是一致的假设，表面熔化均匀，而在低Auence形成的图案可以解释的基础上，局部熔化的表面。对于P偏振光，我们发现了两个主要的模式，一个垂直于偏振，一个平行于它。对于S偏振光，我们报告了两个新的模式，一个平行，一个垂直于偏振的第一次观察，其中后者是通过调用一个新的形成机制解释。结果表明，对于大角度入射的P偏振光，涟漪间距与预期值有很大的偏差。结果表明，与先前开发的第一性原理理论是非常一致的。此外，我们报告的表面结构是一致的毛细波的想法被发射，随后冻结在材料的表面上。
We report the first systematic investigation into the properties of ultraviolet-laser-induced periodic surface structures that can be produced on nominally smooth surfaces. The study investigates the dependence of the patterns that are produced on Ge and Al by a KrF 249-nm laser on incident fluence and both the polarization and angle of incidence of the light. At high Auence we show that the results are consistent with the assumption that the surface melts uniformly, whereas the patterns formed at low Auence can be explained on the basis of the localized melting of the surface. For P-polarized light we find two dominant patterns, one perpendicular to the polarization and one parallel to it. For S-polarized light we report the first observation of two new patterns, one parallel and one perpendicular to the polarization, of which the latter is explained by invoking a new formation mechanism. The results show that for P-polarized light at large angles of incidence the ripple spacing shows large deviations from its previously expected value. The results are shown to be in excellent agreement with a previously developed first-principles theory. In addition, we report surface structures that are consistent with the idea of capillary waves being launched and subsequently frozen on the surface of the material.