物理学报Issue(16)：1-7,7.DOI:10.7498/aps.62.165202
激光烧蚀高纯Zn形成的微米金属球体对后续脉冲激光的耦合增强效应*
Effect of laser-induced zinc micro-spheres on enhanced absorption of subsequent pulse laser*
摘要
Abstract
Numerous football-shaped Zinc micro-spheres on inner surface of the crater are produced by pulsed laser ablation of Zn metals in vacuum condition (∼2 Pa). Pulsed laser induced plasma emission spectrum is measured to reveal the effects of macro-and micro-structures on subsequent pulse laser ablation. The intensity of spectral line at 334.5 nm originating from Zn atoms by subsequent laser ablation of the ablated spot is 10.3% higher than that created over a smooth surface. The intensity of the same spectral line produced over a ablated spot with a great number of micro-spheres is 1.343 times higher than that produced by the plasma generated over the ablated spot. The Zn micro-sphere completely covered with nano-scaled regular pentagonal and hexagonal facets can lead to an enhanced absorption of the following laser energy. The total number of Zn micro-spheres increases as the number of laser shots increses, which can result in hotter and dense plasma by subsequent laser ablation. The proposed results are of importance for developing the laser micro-drilling technique.关键词
脉冲激光烧蚀/微纳米结构/激光诱导等离子体Key words
laser ablation/micro-structures/laser induced plasma引用本文复制引用
陈明,李爽,崔清强,刘向东..激光烧蚀高纯Zn形成的微米金属球体对后续脉冲激光的耦合增强效应*[J].物理学报,2013,(16):1-7,7.基金项目
国家自然科学基金(批准号:11105085,11075097)、山东省优秀中青年科学家科研奖励基金(批准号:BS2012CL024)和山东省高等学校科技计划(批准号:J12LA51)资助的课题.*Project supported by the National Natural Science Foundation of China (Grant Nos.11105085,11075097), the Excellent Youth and Middle Age Scientists Fund of Shandong Province, China (Grant No. BS2012CL024), and the Project of Shandong Province Higher Educational Science and Technology Program, China (Grant No. J12LA51) （批准号:11105085,11075097）
