Published April 15, 2002
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Journal Article
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Lock acquisition of a gravitational-wave interferometer
Chicago
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Abstract
Interferometric gravitational-wave detectors, such as the Laser Interferometer Gravitational Wave Observatory (LIGO) detectors currently under construction, are based on kilometer-scale Michelson interferometers, with sensitivity that is enhanced by addition of multiple coupled optical resonators. Reducing the relative optic motions to bring the system to the resonant operating point is a significant challenge. We present a new approach to lock acquisition, used to lock a LIGO interferometer, whereby the sensor transformation matrix is dynamically calculated to sequentially bring the cavities into resonance.
Additional Information
© 2002 Optical Society of America Received September 26, 2001 We thank our LIGO colleagues for their essential contributions in building the instruments. This work was supported by the National Science Foundation under Cooperative Agreement PHY-9210038. N. Mavalvala, R. Bork, M. Evans, W. Kells, S. Whitcomb, and H. Yamamoto are also with the LIGO Lab, California Institute of Technology, Pasadena, California 91125. P. Fritschel and R. Weiss are also with the LIGO Lab at the Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.Files
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