材料科学
激光器
栅栏
制作
等离子体
光学
箔法
平面的
光电子学
平版印刷术
吸收(声学)
物理
计算机图形学(图像)
病理
复合材料
医学
替代医学
量子力学
计算机科学
作者
C. C. Gheorghiu,M. Cerchez,E. Aktan,R. Prasad,Fatih Yılmaz,Nazik Çelik Yılmaz,D. Popa,O. Willi,V. Leca
摘要
Abstract Engineered targets are expected to play a key role in future high-power laser experiments calling for joined, extensive knowledge in materials properties, engineering techniques and plasma physics. In this work, we propose a novel patterning procedure of self-supported 10 μm thick Au and Cu foils for obtaining micrometre-sized periodic gratings as targets for high-power laser applications. Accessible techniques were considered, by using cold rolling, electron-beam lithography and the Ar-ion milling process. The developed patterning procedure allows efficient control of the grating and foil surface on large area. Targets consisting of patterned regions of 450 μm × 450 μm, with 2 μm periodic gratings, were prepared on 25 mm × 25 mm Au and Cu free-standing foils, and preliminary investigations of the micro-targets interacting with an ultrashort, relativistic laser pulse were performed. These test experiments demonstrated that, in certain conditions, the micro-gratings show enhanced laser energy absorption and higher efficiency in accelerating charge particle beams compared with planar thin foils of similar thickness.
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