基于全光纤结构的光束匀化整形技术研究进展  

Research Progress on Beam Homogenization and Shaping Technology Using All-Fiber Structure

作　　者：张栩 邢颍滨 褚应波 陈瑰 戴能利 李海清 彭景刚 李进延 Zhang Xu;Xing Yingbin;Chu Yingbo;Chen Gui;Dai Nengli;Li Haiqing;Peng Jinggang;Li Jinyan(Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China)

机构地区：[1]华中科技大学武汉光电国家研究中心,湖北武汉430074

出　　处：《激光与光电子学进展》2022年第15期192-208,共17页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61975061)。

摘　　要：光纤激光器被广泛应用于工业加工、军事国防等领域,其输出的激光能量分布往往呈类高斯型分布,这种光斑直径内的非均匀能量分布在应用于光刻、焊接等方面时往往会影响光斑内沿光斑直径不同位置处加工效果的一致性。因此在实际应用中,对类高斯光束进行匀化整形具有重大意义。相对于传统空间结构的光束整形方法,全光纤结构的光束整形对光纤激光器来说具有结构简单、紧凑型好等优点。通过对历年来各学者研究进展的总结,将全光纤结构的匀化整形技术归类为增加输出激光中的高阶模成分和直接改变基模的能量分布两类,并从这两种方法详细阐述了全光纤结构光束匀化整形技术的研究现状,并展望了全光纤结构光束整形技术的未来发展方向。Fiber lasers are widely used in industrial processing, military defense, and other fields. The energy distribution of the laser output in fiber lasers is Gaussian-like distribution. This nonuniform energy distribution within the spot diameter affects the consistency of the processing effect at different positions along the spot diameter when applied to lithography,welding, etc. Therefore, homogenizing and shaping Gaussian-like beams in practical applications is greatly significant.Compared with the beam shaping method of the traditional spatial structure, using the all-fiber structure in beam shaping provides a simple structure and good compactness for the fiber lasers. By summarizing the research progress of various scholars over the years, the homogenization and shaping technology of the all-fiber structure is classified into two categories: increasing the components of the high-order mode in the output laser and directly changing the energy distribution of the fundamental mode. In this paper, we present the research status of all-fiber structure beam homogenization and shaping technology and discuss prospects of future development in all-fiber structure beam shaping technology.

关 键 词：光纤光学 光束整形 平顶光束 光纤激光器 

分 类 号：TN248[电子电信—物理电子学]