Detuned Twin-Signal-Recycling for ultrahigh-precision interferometers.
We propose a new interferometer technique for high-precision phase measurements such as those in gravitational wave detection. The technique utilizes a pair of optically coupled resonators that provide identical resonance conditions for the upper as well the lower phase modulation signal sidebands. This symmetry significantly reduces the noise spectral density in a wide frequency band compared with single-sideband recycling topologies of current and planned gravitational wave detectors. Furthermore, the application of squeezed states of light becomes less demanding.
Thüring
André
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Institut für Gravitationsphysik, Leibniz Universtität Hannover, Hannover, Germany. andre.thuering@aei.mpg.de
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