An introduction to signal extraction in interferometric gravitational wave detectors

A Decision between Bayesian and Frequentist Upper Limit in Analyzing Continuous Gravitational Waves

Given the sensitivity of current ground-based Gravitational Wave (GW) detectors, any continuous-wave signal we can realistically expect will be at a level or below the background noise. Hence, any data analysis of detector data will need to rely on statistical techniques to separate the signal from the noise. While with the current sensitivity of our detectors we do not expect to detect any tru...

dc readout experiment at the Caltech 40m prototype interferometer

The Laser Interferometer Gravitational Wave Observatory (LIGO) operates a 40m prototype interferometer on the Caltech campus. The primary mission of the prototype is to serve as an experimental testbed for upgrades to the LIGO interferometers and for gaining experience with advanced interferometric techniques, including detuned resonant sideband extraction (i.e. signal recycling) and dc readout...

Robust extraction of control signals for power-recycled interferometric gravitational-wave detectors

An experimental demonstration of resonant sideband extraction for laser-interferometric gravitational wave detectors

Resonant sideband extraction is a new optical configuration for laser-interferometric gravitational wave detectors with Fabry-Perot cavities in the arms. It reduces the thermal load on the beam splitter and the coupling mirrors of the cavities and also allows one to adapt the frequency response of the detector to a variety of requirements. We report the first experimental demonstration using a ...

High power, low-noise, and multiply resonant photodetector for interferometric gravitational wave detectors.

We have developed a new photodetector circuit for use in interferometric gravitational wave detectors. The circuit can detect high laser power with low noise and provide multiple outputs for different signal frequencies. The dynamic range of this circuit is increased in comparison with the photodetector design used until the end of 2005.