10 kW rectangular laser beam generation with incoherent space combiner | |
Tian, Xiao1,2; Bai, Yang1; Lei, Guangzhi3; Yu, Lidong1; Zhou, Jingfeng1; Li, Ben1; Wang, Yi1 | |
作者部门 | 空间光学技术研究室 |
2022-06 | |
发表期刊 | Optik |
ISSN | 00304026 |
卷号 | 260 |
产权排序 | 3 |
摘要 | In this paper, we report an incoherent space laser beam combiner for rectangular beam combination with 18 fiber-transmitted semiconductor lasers at 972 nm wavelength. The coupled thermo-mechanical properties of all the optical lenses in the combiner were analyzed to evaluate the long-term reliability of the combiner subjected to beyond 10 kW high-power laser irradiation. An experiment-based numerical model was developed on the basis of the multi-beam laser volumetric heat source, and the performance of lenses irradiated by 10 kW combined laser for 1000 s was studied with finite element method (FEM). The maximum temperature among all lenses was 427.27 K which is much lower than the softening point temperature of fused silica material made of lenses. And the 0.1 aperture number corresponding to the maximum thermal deformation of 4.53 µm is much smaller than the conventional optical lens processing tolerance. The maximal stress of 12.73 MPa is far less than the yield stress of 4.5 GPa for the material. The manufactured laser beam combiner realized a highest output power of 10.641 kW at a power combination efficiency of 98.5%, a combination length of 200 mm and a rectangular focal beam spot of 30 mm × 10 mm. Our method provides a valuable choice for realizing fast and flexible laser surface heat treatment. © 2022 Elsevier GmbH |
关键词 | Incoherent space laser beam combination 10 kW beam combiner Rectangular uniform beam spot Multi-beam laser volumetric heat source Finite element methods Optical lens Thermo-mechanical properties |
DOI | 10.1016/j.ijleo.2022.169011 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000796024800005 |
出版者 | Elsevier GmbH |
EI入藏号 | 20221611980034 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/95847 |
专题 | 空间光学技术研究室 |
通讯作者 | Bai, Yang |
作者单位 | 1.National Key Laboratory of Photonics and Photon-Technology, Northwest University, Xi'an; 710127, China; 2.School of Science, Xi'an Aeronautical University, Xi'an; 710077, China; 3.Space Optical Technology Research Department, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China |
推荐引用方式 GB/T 7714 | Tian, Xiao,Bai, Yang,Lei, Guangzhi,et al. 10 kW rectangular laser beam generation with incoherent space combiner[J]. Optik,2022,260. |
APA | Tian, Xiao.,Bai, Yang.,Lei, Guangzhi.,Yu, Lidong.,Zhou, Jingfeng.,...&Wang, Yi.(2022).10 kW rectangular laser beam generation with incoherent space combiner.Optik,260. |
MLA | Tian, Xiao,et al."10 kW rectangular laser beam generation with incoherent space combiner".Optik 260(2022). |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
10 kW rectangular la(8852KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论