Polarization switching of sodium guide star laser for brightness enhancement
文献类型：会议论文
| 作者 | Feng, Yan; Fan, Tingwei; Zhou, Tianhua |
| 出版日期 | 2016 |
| 通讯作者 | feng@siom.ac.cn |
| 英文摘要 | The efficiency of optical pumping that enhances the brightness of sodium laser guide star with circularly polarized light is reduced substantially due to the precession of sodium atoms in geomagnetic field. Switching the laser between left and right circular polarization at the Larmor frequency is proposed to improve the photon return. With ESO's cw laser guide star system at Paranal as example, numerical simulation for both square-wave and sine-wave polarization modulation is conducted. For the square-wave switching case, the return flux is increased when the angle between geomagnetic field and laser beam is larger than 60 degrees, as much as 40% at 90 degrees. The method can also be applied for remote measurement of magnetic field with available cw guide star laser. |
| 会议录 | ADAPTIVE OPTICS SYSTEMS V
 |
| 语种 | 英语 |
| ISSN号 | 0277-786X |
| 源URL | [http://ir.siom.ac.cn/handle/181231/27394]  |
| 专题 | 上海光学精密机械研究所_空间激光信息技术研究中心 |
| 作者单位 | 中国科学院上海光学精密机械研究所 |
| 推荐引用方式 GB/T 7714 | Feng, Yan,Fan, Tingwei,Zhou, Tianhua. Polarization switching of sodium guide star laser for brightness enhancement[C]. 见:. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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