Controlling the Laser Guide Star power density distribution at Sodium layer by combining Pre-correction and Beam-shaping
文献类型：期刊论文
| 作者 | Huang, Jian1,2,3; Wei, Kai1,2; Jin, Kai1,2,3; Li, Min1,2; Zhang, YuDong1,2 |
| 刊名 | OPTICS COMMUNICATIONS
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 416页码:172-180 |
| 关键词 | Adaptive optics Power distribution Pre-correction Laser beam shaping Atmospheric propagation Atmospheric turbulence |
| ISSN号 | 0030-4018 |
| DOI | 10.1016/j.optcom.2018.02.005 |
| 文献子类 | J |
| 英文摘要 | The Sodium laser guide star (LGS) plays a key role in modern astronomical Adaptive Optics Systems (AOSs). The spot size and photon return of the Sodium LGS depend strongly on the laser power density distribution at the Sodium layer and thus affect the performance of the AOS. The power density distribution is degraded by turbulence in the uplink path, launch system aberrations, the beam quality of the laser, and so forth. Even without any aberrations, the TE00 Gaussian type is still not the optimal power density distribution to obtain the best balance between the measurement error and temporal error. To optimize and control the LGS power density distribution at the Sodium layer to an expected distribution type, a method that combines pre-correction and beam-shaping is proposed. A typical result shows that under strong turbulence (Fried parameter (r(0)) of 5 cm) and for a quasi-continuous wave Sodium laser (power (P) of 15 W), in the best case, our method can effectively optimize the distribution from the Gaussian type to the "top-hat'' type and enhance the photon return flux of the Sodium LGS; at the same time, the total error of the AOS is decreased by 36% with our technique for a high power laser and poor seeing. |
| WOS关键词 | ON-SKY TEST ; DEFORMABLE MIRRORS ; ADAPTIVE OPTICS ; SCINTILLATION ; PROJECTION ; ASTRONOMY ; SYSTEMS |
| 语种 | 英语 |
| WOS记录号 | WOS:000427535300028 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/9335]  |
| 专题 | 光电技术研究所_自适应光学技术研究室（八室） |
| 作者单位 | 1.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China; 2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China; 3.University of Chinese Academy of Sciences, Beijing; 100049, China |
| 推荐引用方式 GB/T 7714 | Huang, Jian,Wei, Kai,Jin, Kai,et al. Controlling the Laser Guide Star power density distribution at Sodium layer by combining Pre-correction and Beam-shaping[J]. OPTICS COMMUNICATIONS,2018,416:172-180. |
| APA | Huang, Jian,Wei, Kai,Jin, Kai,Li, Min,&Zhang, YuDong.(2018).Controlling the Laser Guide Star power density distribution at Sodium layer by combining Pre-correction and Beam-shaping.OPTICS COMMUNICATIONS,416,172-180. |
| MLA | Huang, Jian,et al."Controlling the Laser Guide Star power density distribution at Sodium layer by combining Pre-correction and Beam-shaping".OPTICS COMMUNICATIONS 416(2018):172-180. |
入库方式： OAI收割
来源：光电技术研究所
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