Technical Principles
Here you find technical details concerning the GEO600 Project.
GEO600 Specifications
| 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 < 10-8 mbar |
| 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.
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FINESSE (Frequency domain INterfErometer Simulation SotfwarE) is a fast and easy to use interferometer simulation software created at GEO600.
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The handling of high quality optics requires cleanroom facilities to prevent even microscopic dust particles from entering the system.
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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.
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