DC-readout of a signal-recycled gravitational wave detector
arXiv:0811.3242 · doi:10.1088/0264-9381/26/5/055012
Abstract
All first-generation large-scale gravitational wave detectors are operated at the dark fringe and use a heterodyne readout employing radio frequency (RF) modulation-demodulation techniques. However, the experience in the currently running interferometers reveals several problems connected with a heterodyne readout, of which phase noise of the RF modulation is the most serious one. A homodyne detection scheme (DC-readout), using the highly stabilized and filtered carrier light as local oscillator for the readout, is considered to be a favourable alternative. Recently a DC-readout scheme was implemented on the GEO 600 detector. We describe the results of first measurements and give a comparison of the performance achieved with homodyne and heterodyne readout. The implications of the combined use of DC-readout and signal-recycling are considered.
11 pages
Cited by in corpus (14)
- Review of the Advanced LIGO gravitational wave observatories leading to observing run four
- Virgo Detector Characterization and Data Quality: results from the O3 run
- LIGOs Quantum Response to Squeezed States
- Point absorbers in Advanced LIGO
- An Experiment for Observing Quantum Gravity Phenomena using Twin Table-Top 3D Interferometers
- Phase Control of Squeezed Vacuum States of Light in Gravitational Wave Detectors
- End benches scattered light modeling and subtraction in Advanced Virgo
- Photon Counting Interferometry to Detect Geontropic Space-Time Fluctuations with GQuEST
- Status of advanced ground-based laser interferometers for gravitational-wave detection
- A two-carrier scheme: evading the 3dB quantum penalty of heterodyne readout in gravitational-wave detectors
- Quantum Squeezing Schemes for Heterodyne Readout
- Effects of static and dynamic higher-order optical modes in balanced homodyne readout for future gravitational waves detectors
- Observation of an Optical Spring in a Robustly Controlled Signal-Recycled Michelson Interferometer
- Optimisation of table-top 3D interferometers for Observational Quantum Gravity