Fabrication of an Anti-Reflective Microstructure on ZnS by Femtosecond Laser Bessel Beams | |
Li, Xun1,2; Li, Ming1; Liu, Hongjun1,2,3; Guo, Yan1 | |
作者部门 | 瞬态光学研究室 |
2021-07 | |
发表期刊 | MOLECULES |
ISSN | 1420-3049 |
卷号 | 26期号:14 |
产权排序 | 1 |
摘要 | As an important mid-infrared to far-infrared optical window, ZnS is extremely important to improve spectral transmission performance, especially in the military field. However, on account of the Fresnel reflection at the interface between the air and the high-strength substrate, surface optical loss occurs in the ZnS optical window. In this study, the concave antireflective sub-wavelength structures (ASS) on ZnS have been experimentally investigated to obtain high transmittance in the far-infrared spectral range from 6 mu m to 10 mu m. We proposed a simple method to fabricate microhole array ASS by femtosecond Bessel beam, which further increased the depth of the microholes and suppressed the thermal effects effectively, including the crack and recast layer of the microhole. The influence of different Gaussian and Bessel beam parameters on the microhole morphology were explored, and three ASS structures with different periods were prepared by the optimized Bessel parameters. Ultimately, the average transmittance of the sample with the ASS microhole array period of 2.6 mu m increased by 4.1% in the 6 mu m to 10 mu m waveband, and the transmittance was increased by 5.7% at wavelength of 7.2 mu m. |
关键词 | femtosecond laser ZnS antireflective sub-wavelength structures (ASS) Bessel laser |
DOI | 10.3390/molecules26144278 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000676155800001 |
出版者 | MDPI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/94981 |
专题 | 瞬态光学研究室 |
通讯作者 | Li, Ming; Liu, Hongjun |
作者单位 | 1.Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Xun,Li, Ming,Liu, Hongjun,et al. Fabrication of an Anti-Reflective Microstructure on ZnS by Femtosecond Laser Bessel Beams[J]. MOLECULES,2021,26(14). |
APA | Li, Xun,Li, Ming,Liu, Hongjun,&Guo, Yan.(2021).Fabrication of an Anti-Reflective Microstructure on ZnS by Femtosecond Laser Bessel Beams.MOLECULES,26(14). |
MLA | Li, Xun,et al."Fabrication of an Anti-Reflective Microstructure on ZnS by Femtosecond Laser Bessel Beams".MOLECULES 26.14(2021). |
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