Photon Return On-Sky Test of Pulsed Sodium Laser Guide Star with D-2b Repumping
文献类型：期刊论文
| 作者 | Jin, Kai; Wei, Kai; Feng, Lu; Bo, Yong; Zuo, JunWei; Li, Min; Fu, HanChu; Dai, XiaoLin; Bian, Qi; Yao, Ji |
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
 |
| 出版日期 | 2015 |
| 卷号 | 127期号:954页码:749-756 |
| ISSN号 | 0004-6280 |
| 中文摘要 | Sodium laser guide star (LGS) system has become one of the critical components in modern astronomical adaptive optics system (AOS), especially for the next-generation extremely large telescopes, such as the Thirty Meter Telescope and the European Extremely Large Telescope. Since the wavefront detection performance of AOS is directly related to the brightness of LGS, it is important for AOS to maximize its photon generation efficiency by all means. Sodium D-2b line repumping is such a technique that can greatly increase the returned photons for either sodium continuous wave (CW) laser or pulsed laser. This technique has been studied theoretically and field tested with a 20 W CW laser by European Southern Observatory team. However, field test results of a 20 W class pulsed laser with D-2b repumping have not been reported yet. In this paper, our latest field test results with theoretical comparison of D-2b repumping with a 20 W quasi-continuous wave (QCW) pulsed laser will be presented. With a linearly polarized beam, approximate 40% photon return enhancement was achieved when 10% of laser power was detuned to D-2b line, which agreed well with results from a rate equation-based Monte Carlo photon return simulation program. Both experiment and simulation results indicate that with a higher laser intensity projected at the sodium layer, the D-2b repumping will be more effective. |
| 英文摘要 | Sodium laser guide star (LGS) system has become one of the critical components in modern astronomical adaptive optics system (AOS), especially for the next-generation extremely large telescopes, such as the Thirty Meter Telescope and the European Extremely Large Telescope. Since the wavefront detection performance of AOS is directly related to the brightness of LGS, it is important for AOS to maximize its photon generation efficiency by all means. Sodium D-2b line repumping is such a technique that can greatly increase the returned photons for either sodium continuous wave (CW) laser or pulsed laser. This technique has been studied theoretically and field tested with a 20 W CW laser by European Southern Observatory team. However, field test results of a 20 W class pulsed laser with D-2b repumping have not been reported yet. In this paper, our latest field test results with theoretical comparison of D-2b repumping with a 20 W quasi-continuous wave (QCW) pulsed laser will be presented. With a linearly polarized beam, approximate 40% photon return enhancement was achieved when 10% of laser power was detuned to D-2b line, which agreed well with results from a rate equation-based Monte Carlo photon return simulation program. Both experiment and simulation results indicate that with a higher laser intensity projected at the sodium layer, the D-2b repumping will be more effective. |
| 学科主题 | ADAPTIVE-OPTICS; EXCITATION; SYSTEM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000359920600006 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/6430]  |
| 专题 | 光电技术研究所_自适应光学技术研究室（八室） |
| 推荐引用方式 GB/T 7714 | Jin, Kai,Wei, Kai,Feng, Lu,et al. Photon Return On-Sky Test of Pulsed Sodium Laser Guide Star with D-2b Repumping[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2015,127(954):749-756. |
| APA | Jin, Kai.,Wei, Kai.,Feng, Lu.,Bo, Yong.,Zuo, JunWei.,...&Zhang, YuDong.(2015).Photon Return On-Sky Test of Pulsed Sodium Laser Guide Star with D-2b Repumping.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,127(954),749-756. |
| MLA | Jin, Kai,et al."Photon Return On-Sky Test of Pulsed Sodium Laser Guide Star with D-2b Repumping".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 127.954(2015):749-756. |
入库方式： OAI收割
来源：光电技术研究所
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