Easy-handling minimum mass laser target scaffold based on sub-millimeter air bubble -An example of laser plasma extreme ultraviolet generation-"
Easy-handling minimum mass laser target scaffold based on sub-millimeter air bubble -An example of laser plasma extreme ultraviolet generation-"
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基于亚毫米气泡的易于操作的最小质量激光靶支架-激光等离子体极紫外生成的示例-"
DOI：
10.1038/s41598-020-62858-3
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发表时间：
2020
影响因子：
4.6
通讯作者：
Keiji Nagai
中科院分区：
文献类型：
--
作者：
Christopher S. A. Musgrave;Shuntaro Shoji;Keiji Nagai
低密度材料可以控制等离子体对激光的吸收特性，从而提高量子光束的产生。最近实用化的极紫外光(EUV)是第一个工业上使用低密度靶的激光等离子体源。在这里，我们提出了一种易于操作的靶源，它基于由聚电解质、阳离子和阴离子表面活性剂在气泡上制成的中空亚毫米微胶囊。这种轻质的微胶囊作为支架，在表面涂覆一层氧化锡纳米颗粒(22-48%)，然后干燥。作为概念研究的验证，用1 × 1010W/cm~2的激光(1 ns)烧蚀微胶囊，产生相对于激光入射的13.5 nm极紫外光。TiN包覆微胶囊(0.8%)在13.5 nm 2%带宽处的激光转换效率(CE)与块体TiN(1%)相当。我们认为，微胶囊聚集体可以作为一种潜在的小规模/紧凑的极紫外光光源，并通过改变涂层到其他元素来实现未来的量子束光源。
Low density materials can control plasma properties of laser absorption, which can enhance quantum beam generation. The recent practical extreme ultraviolet light (EUV) is the first industrial example of laser plasma source with low density targets. Here we propose an easy-handling target source based on a hollow sub-millimeter microcapsule fabricated from polyelectrolyte cationic and anionic surfactant on air bubbles. The lightweight microcapsules acted as a scaffold for surface coating by tin (IV) oxide nanoparticles (22–48%), and then dried. As a proof of concept study, the microcapsules were ablated with a Nd:YAG laser (7.1 × 1010W/cm2, 1 ns) to generate 13.5 nm EUV relatively directed to laser incidence. The laser conversion efficiency (CE) at 13.5 nm 2% bandwidth from the tin-coated microcapsule (0.8%) was competitive compared with bulk tin (1%). We propose that microcapsule aggregates could be utilized as a potential small scale/compact EUV source, and future quantum beam sources by changing the coating to other elements.