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亚femtowatt 激光相位跟踪 追踪

Callum S Sambridge1, Lyle E Roberts1, Andrew R Wade1

  • 1Centre for Gravitational Astrophysics, Australian National University, Building 38 Science Road, Acton, Australian Capital Territory 2601, Australia.

Physical review letters
|November 24, 2023
PubMed
概括
此摘要是机器生成的。

研究人员实现了用于卫星间激光干涉测量的低功率光学相位跟踪,证明了亚femtowatt领域的连续跟踪. 这一突破使未来的太空任务能够减少光学功率需求.

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科学领域:

  • 物理 物理学 物理
  • 光学工程是指光学工程.
  • 航空航天工程 航空航天工程

背景情况:

  • 低功率光学相位跟踪对于卫星间激光干扰测量至关重要.
  • 最低可追踪功率显著限制了卫星之间的激光链路的任务设计.

研究的目的:

  • 为了证明子femtowatt光学场的连续跟踪.
  • 为了研究空间飞船间激光链接的可行性,减少接收光学功率.

主要方法:

  • 结合激光稳定和控制循环参数优化.
  • 实验展示了跟踪亚瓦特光学场的实验演示.
  • 利用两个稳定激光来跟踪类似于重力恢复和气候实验 (GRACE) 的信号动态.

主要成果:

  • 证明了亚femtowatt光学场的连续跟踪,滑动之间的平均时间超过1000秒.
  • 实验性能受到光子射击噪声和激光频率波动的限制.
  • 实现了100分钟的GRACE类信号的连续相位跟踪,具有1-7 fW光载波功率和零循环滑动.

结论:

  • 该研究证明了用于卫星间激光干涉测量的低功率光学相位跟踪的可行性.
  • 未来的航天器间激光链接可以在显著减少的接收光学功率下运行.
  • 先进的激光稳定和控制技术是实现高性能光学相位跟踪的关键.