RSE Experiment

Physics

Scientific paper

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Scientific paper

For the next-generation gravitational wave detectors like Advanced-LIGO and LCGT, quantum noise is the most limiting opponents against the gravitational waves. To detune the interferometer and to enhance the signal in a particular frequency band is a way to reduce quantum noise, which will be employed in next generation detectors. A detuned condition is realized with an additional mirror at the signal port, which forms a compound cavity with the arms. In this cavity, signals in a particular frequency band are extracted from the arms, circulating within the additional cavity. This system is called (detuned) Resonant Sideband Extraction (RSE). We have constructed a 4m prototype of the RSE system to prove the physics and to ensure the control scheme before large-scale interferometers. Fabry-Perot Resonator Power Recycling Mirror LASER Signal Recycling Mirror Fig.

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