Lock acquisition of a gravitational-wave interferometer.
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.
Evans
M
M
Mavalvala
N
N
Fritschel
P
P
Bork
R
R
Bhawal
B
B
Gustafson
R
R
Kells
W
W
Landry
M
M
Sigg
D
D
Weiss
R
R
Whitcomb
S
S
Yamamoto
H
H