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arXiv 1102.5423gr-qcastro-ph.IM
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LISA锁臂的时域仿真

Time Domain Simulations of Arm Locking in LISA

James Ira Thorpe, Peiman Maghami, Jeffrey Livas

摘要:

臂锁定是为减少激光干涉仪空间天线(LISA)中的激光频率波动而提出的一种技术,LISA是一个对毫赫兹频率波段敏感的引力波观测站。臂锁定利用了构成LISA的三个航天器的三角星座的几何稳定性,以提供在LISA测量带中具有稳定性的频率基准,该稳定性超过了从标准基准(例如光学腔或分子吸收线)获得的稳定性。我们已经实现了一个时域仿真的臂锁定,包括预期的限制噪声源(散粒噪声,时钟噪声,航天器抖动噪声,和残留的激光频率噪声)。不完善的先验知识的LISA外差频率和相关的“拉”的臂锁定激光器的效果。我们发现,我们的实现满足要求的噪声和激光频率的动态范围。

英文摘要:

Arm locking is a technique that has been proposed for reducing laser frequency fluctuations in the Laser Interferometer Space Antenna (LISA), a gravitational-wave observatory sensitive in the milliHertz frequency band. Arm locking takes advantage of the geometric stability of the triangular constellation of three spacecraft that comprise LISA to provide a frequency reference with a stability in the LISA measurement band that exceeds that available from a standard reference such as an optical cavity or molecular absorption line. We have implemented a time-domain simulation of arm locking including the expected limiting noise sources (shot noise, clock noise, spacecraft jitter noise, and residual laser frequency noise). The effect of imperfect a priori knowledge of the LISA heterodyne frequencies and the associated 'pulling' of an arm locked laser is included. We find that our implementation meets requirements both on the noise and dynamic range of the laser frequency.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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