Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-04-18
Phys.Rev. D74 (2006) 022001
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
6 pages, 4 figures, for submission to Phys Rev Letters
Scientific paper
10.1103/PhysRevD.74.022001
We report on the optical response of a suspended-mass detuned resonant sideband extraction (RSE) interferometer with power recycling. The purpose of the detuned RSE configuration is to manipulate and optimize the optical response of the interferometer to differential displacements (induced by gravitational waves) as a function of frequency, independently of other parameters of the interferometer. The design of our interferometer results in an optical gain with two peaks: an RSE optical resonance at around 4 kHz and a radiation pressure induced optical spring at around 41 Hz. We have developed a reliable procedure for acquiring lock and establishing the desired optical configuration. In this configuration, we have measured the optical response to differential displacement and found good agreement with predictions at both resonances and all other relevant frequencies. These results build confidence in both the theory and practical implementation of the more complex optical configuration being planned for Advanced LIGO.
Abbott Benjamin
Adhikari Rana
Bork Rolf
Busby Daniel
Evans Matthew
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