Application of fast-light in gravitational wave detection with interferometers and resonators
Application of fast-light in gravitational wave detection with interferometers and resonators
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DOI：
10.1080/09500340802454989
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发表时间：
2008-01-01
影响因子：
1.3
通讯作者：
Salit, M.
中科院分区：
文献类型：
--
作者：
Shahriar, M. S.;Salit, M.
在本文中，我们研究了几种干涉引力波探测器的设计，以及用快光介质提高其性能的潜力。首先，我们探索这种介质对类似于先进LIGO计划的设计的影响。然后，我们回顾了零面积Sagnac干涉仪的GW检测，比较其性能与更传统的GW检测器的基础上的迈克尔逊干涉仪。我们接下来描述这样的检测器的修改版本，其中Sagnac干涉仪由外部激光器馈送的零面积Sagnac环形谐振器代替。然后，我们考虑GW检测器的基础上的一个积极的，零面积Sagnac环谐振器，其中增益介质存在于腔内。最后，我们表明，如果一个负色散的介质，这会产生快光效应，也存在于这个探测器内，那么它的灵敏度GW应变的色散介质的组指数的倒数增强。我们描述的条件下，这种增强因子可以大到10（5）。
In this paper, we study several designs for interferometric gravitational wave detectors, and the potential for enhancing their performance with a fast-light medium. First, we explore the effect of such a medium on designs similar to those already planned for Advanced LIGO. Then we review the zero-area Sagnac interferometer for GW detection, comparing its properties against the more conventional GW detector based on a Michelson interferometer. We next describe a modified version of such a detector where the Sagnac interferometer is replaced by a zero-area Sagnac ring resonator fed by an external laser. We then consider a GW detector based on an active, zero-area Sagnac ring resonator, where a gain medium is present inside the cavity. Finally, we show that if a medium with negative dispersion, which yields the fast-light effect, is also present inside this detector, then its sensitivity to GW strain is enhanced by the inverse of the group index of the dispersive medium. We describe conditions under which this enhancement factor could be as large as 10(5).