Brownian motion of a torsion pendulum with internal friction
Abstract
We constructed a torsion pendulum in which the dissipation is dominated by internal friction in the fiber. We compare the measured thermal noise spectrum with the prediction from the fluctuation-dissipation theorem. The agreement is excellent. The spectrum exhibits an approximately {1}/{f} slope below resonance. We discuss the implications for interferometric gravitational wave detectors.
- Publication:
-
Physics Letters A
- Pub Date:
- February 1995
- DOI:
- 10.1016/0375-9601(95)00194-8
- Bibcode:
- 1995PhLA..201...12G