Here you find technical details concerning the GEO600 Project.
Armlength 2 x 600 m
Orientation NNW and ENE
Tube diameter 60 cm
Laser type Diode-pumped Nd:YAG laser at 1064 nm
Laser power 30 W single mode at 1064 nm
Power recycling factor 1000
Optics 25 cm diameter fused-silica mirrors
Signal recycling factor 10
Frequency range 50 Hz to 6 kHz
Vacuum pressure < 10
Sensitivity depending on bandwidth
h ~ 10
-20 ... 10 -21 (for bursts)
h ~ 10
-26 (for cw signals and 1 yr integration time)
Optical layout of the squeezed-light enhanced gravitational wave detector GEO600.
FINESSE (Frequency domain INterfErometer Simulation SotfwarE) is a fast and easy to use interferometer simulation software created at GEO600.
The handling of high quality optics requires cleanroom facilities to prevent even microscopic dust particles from entering the system.
The central elements in all gravitational wave detectors are mirrors, which are used to direct the laser beams. They are suspended as pendulums, so that they are isolated from various disturbances.