Negative optical inertia for enhancing the sensitivity of future gravitational-wave detectors

@article{Khalili2011NegativeOI,
  title={Negative optical inertia for enhancing the sensitivity of future gravitational-wave detectors},
  author={Farid Ya. Khalili and S L Danilishin and Helge Mueller-Ebhardt and Haixing Miao and Yanbei Chen and Chunnong Zhao},
  journal={Physical Review D},
  year={2011},
  volume={83},
  pages={062003}
}
We consider enhancing the sensitivity of future gravitational-wave detectors by using double optical spring. When the power, detuning and bandwidth of the two carriers are chosen appropriately, the effect of the double optical spring can be described as a “negative inertia,” which cancels the positive inertia of the test masses and thus increases their response to gravitational waves. This allows us to surpass the free-mass standard quantum limit (SQL) over a broad frequency band, through… 

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