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Producing anomalous uniform periodic nanostructures on Cr thin films by femtosecond laser irradiation in vacuum
F. Wang,B. Zhao,Y. H. Lei,J. J. Yang and C. L. Guo
2020
发表期刊Optics Letters
ISSN0146-9592
卷号45期号:6页码:1301-1304
摘要We report on producing unprecedentedly uniform periodic structures on chromium thin films in vacuum conditions with irradiation of femtosecond laser pulses. In sharp contrast to the observations in air, the achieved surface structures of the ablated groove arrays are surprisingly found to have not only an extraordinarily uniform distribution but also a deep-subwavelength period of 360 nm. The measured both width and depth of the ablated periodic grooves are 150 and 120 nm, respectively, showing a large depth-to-width ratio and sharp-edge profiles. Remarkably, such well-organized nanostructures can be enabled to robustly extend into an infinitely long range via the sample scanning and even have a large-area product ion with a cylindrical lens. Raman spectral analyses reveal that the regular formation of such nanostructures benefits from avoiding the material oxidation and thermal disturbance of the air plasma on the sample surface. (C) 2020 Optical Society of America
DOI10.1364/ol.382322
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收录类别SCI ; EI
语种英语
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文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/64813
专题中国科学院长春光学精密机械与物理研究所
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F. Wang,B. Zhao,Y. H. Lei,J. J. Yang and C. L. Guo. Producing anomalous uniform periodic nanostructures on Cr thin films by femtosecond laser irradiation in vacuum[J]. Optics Letters,2020,45(6):1301-1304.
APA F. Wang,B. Zhao,Y. H. Lei,J. J. Yang and C. L. Guo.(2020).Producing anomalous uniform periodic nanostructures on Cr thin films by femtosecond laser irradiation in vacuum.Optics Letters,45(6),1301-1304.
MLA F. Wang,B. Zhao,Y. H. Lei,J. J. Yang and C. L. Guo."Producing anomalous uniform periodic nanostructures on Cr thin films by femtosecond laser irradiation in vacuum".Optics Letters 45.6(2020):1301-1304.
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