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Sub-SQL Sensitivity via Optical Rigidity in Advanced LIGO Interferometer with Optical Losses

F. Ya. Khalili·V. I. Lazebny·S. P. Vyatchanin
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Abstract

The ``optical springs'' regime of the signal-recycled configuration of laser interferometric gravitational-wave detectors is analyzed taking in account optical losses in the interferometer arm cavities. This regime allows to obtain sensitivity better than the Standard Quantum Limits both for a free test mass and for a conventional harmonic oscillator. The optical losses restrict the gain in sensitivity and achievable signal-to-noise ratio. Nevertheless, for parameters values planned for the Advanced LIGO gravitational-wave detector, this restriction is insignificant.

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F. Ya. Khalili, V. I. Lazebny, S. P. Vyatchanin. 2005-11-02. Sub-SQL Sensitivity via Optical Rigidity in Advanced LIGO Interferometer with Optical Losses. https://doi.org/10.1103/physrevd.73.062002

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