Laser guide star facility developments at W. M. Keck Observatory
Laser guide star facility developments at W. M. Keck Observatory
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W. M. 凯克天文台激光导星设施的开发
DOI：
10.1117/12.2057449
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
K. Wei
中科院分区：
文献类型：
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作者：
J. Chin;P. Wizinowich;E. Wetherell;S. Cetre;S. Ragland;R. Campbell;S. Lilley;J. Lyke;D. Medeiros;R. Rampy;T. Stalcup;K. Tsubota;Pete Tucker;K. Wei
自2004年和2012年以来，用于自适应光学(AO)的激光导星(LGS)设备分别在Keck II和Keck I望远镜上进行了常规科学操作。Keck II LGS设施目前正在进行两项升级：将激光器的发射从Keck望远镜的一侧移到次镜后面，并用拉曼光纤放大器(RFA)激光器取代现有的染料激光器。这两项升级都是在为Keck的下一代AO(Ngao)系统建立多LGS设施的道路上。我们将讨论现有LGS设施的性能和运营经验，重点是较新的Keck I LGS设施、最近实施的Keck II中心发射系统及其初步的空中结果、新光纤激光器的设计和实施进展，以及为Ngao建立多LGS设施的计划。
Laser Guide Star (LGS) facilities for adaptive optics (AO) have been in routine scientific operation on the Keck II and Keck I telescopes since 2004 and 2012, respectively. Two upgrades are currently in process for the Keck II LGS facility: moving the launch of the laser from the side of the Keck telescope to behind the secondary mirror and replacing the existing dye laser with a Raman-fiber amplifier (RFA) laser. Both of these upgrades are on the path to a multi-LGS facility for Keck’s next generation AO (NGAO) system. We will discuss the performance and operations experience with the existing LGS facilities with an emphasis on the newer Keck I LGS facility, the recently implemented Keck II center launch system and its initial on-sky results, the progress on the design and implementation of the new fiber laser, and the plans for a multi-LGS facility for NGAO.