Formation of periodic structures by laser ablation of metals in liquids |
| |
Authors: | P.V. Kazakevich A.V. Simakin G.A. Shafeev |
| |
Affiliation: | Wave Research Center of A.M. Prokhorov, General Physics Institute of the Russian Academy of Sciences, 38, Vavilov street, 119991 Moscow, Russian Federation |
| |
Abstract: | Experimental results are presented on ablation of metals (W, Cu, brass and bronze) in a liquid environment (e.g., ethanol or water) by irradiation with either a pulsed copper vapor laser (0.51 μm) or a pulsed Nd:YAG laser (1.06 μm). The target material is ejected into surrounding liquid in the form of nanoparticles. In a certain range of laser parameters (fluence and number of laser shots) the surface of the solid target is composed of micro-cones having a regular structure. The distance between neighboring micro-cones in the structure depends on the laser spot size. The structures allow the observation of up-conversion of the laser frequency due to generation of the second harmonics in the eye retina. |
| |
Keywords: | Laser ablation Periodic structures |
本文献已被 ScienceDirect 等数据库收录! |