| 高功率激光在非均匀大气中传输的自聚焦效应研究进展 |
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| 引用本文： | 季小玲, 邓宇. 高功率激光在非均匀大气中传输的自聚焦效应研究进展[J]. 强激光与粒子束, 2021, 33: 081002. doi: 10.11884/HPLPB202133.210211 |
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| 作者姓名： | 季小玲 邓宇 |
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| 作者单位： | 四川师范大学 物理与电子工程学院，成都 610068 |
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| 基金项目： | 国家自然科学基金项目（61775152, 61178070, 61475105） |
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| 摘 要： | 地基激光空间碎片清除和利用激光辐射把转换的太阳能从空间轨道输运到地面等应用中，不可避免地遇到高功率激光在非均匀大气中的传输问题。由于激光功率已远远超过大气非线性自聚焦临界功率，大气自聚焦效应是影响光束质量的一个重要物理因素。概述了近年来国内外高功率激光在非均匀大气中上行或下行传输的自聚焦效应研究进展，主要介绍了高功率激光在非均匀大气中的传输模型、理论基础、数值和解析研究方法，着重介绍了自聚焦效应对激光传输特性和光束质量的影响，并总结了优化靶面光束质量的方案。此外，还介绍了大气群速度色散效应和大气湍流效应等物理因素对激光光束质量的影响。最后，还提出了该领域值得进一步深入研究的一些问题。
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| 关 键 词： | 高功率激光 非均匀大气 自聚焦效应 光束质量 光束传输特性 解析方法 |
| 收稿时间： | 2021-05-30 |
| 修稿时间： | 2021-08-10 |
Research progress on self-focusing effect of high-power laser beams propagating in inhomogeneous atmosphere |
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| Ji Xiaoling, Deng Yu. Research progress on self-focusing effect of high-power laser beams propagating in inhomogeneous atmosphere[J]. High Power Laser and Particle Beams, 2021, 33: 081002. doi: 10.11884/HPLPB202133.210211 |
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| Authors: | Ji Xiaoling Deng Yu |
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| Affiliation: | Department of Physics, Sichuan Normal University, Chengdu 610068, China |
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| Abstract: | The problem of high-power laser beams propagating through the atmosphere will be encountered in applications, such as the ground-based laser space-debris cleaning, and transportation of the laser radiation produced by solar power from space orbits to the ground. In such applications, the laser power is well above the critical power for self-focusing in air. Therefore, it is important to study the self-focusing effect of high-power laser beams propagating through the inhomogeneous atmosphere. This paper reviews the research progress on self-focusing effect of high-power laser beams propagating upwards or downwards in the inhomogeneous atmosphere. The laser beam propagation model, the theoretical model, and the numerical and analytical methods are introduced. The influence of the self-focusing on the beam propagation characteristics and the beam quality is introduced, and the methods of optimizing the beam quality on the target are summarized. Furthermore, the effects of group-velocity dispersion and atmospheric turbulence on the beam quality are also introduced. Finally, some interesting questions for further research are put forward. |
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| Keywords: | high-power laser beam inhomogeneous atmosphere self-focusing effect beam quality beam propagation characteristic analytical method |
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