Application of stochastic resonance in gravitational-wave interferometer
arXiv:gr-qc/0601129 · doi:10.1103/PhysRevD.73.122003
Abstract
We investigate novel approach, which improves the sensitivity of gravitational wave (GW) interferometer due to stochastic resonance (SR) phenomenon, performing in additional nonlinear cavity (NC). The NC is installed in the output of interferometer before photodetector, so that optical signal emerging interferometer incidents on the NC and passes through it. Under appropriate circumstances a specific transformation of noisy signal inside the NC takes place, which results in the increase of output signal-to-noise ratio (SNR). As a result optical noisy signal of interferometer becomes less noisy after passing through the NC. The improvement of SNR is especially effective in bistable NC for wideband (several hundreds Hz) detection, when chirp GW signal is detected. Then SNR gain reaches amount ~ 10. When detection bandwidth is narrowed, the influence of SR mechanism gradually disappears, and SNR gain tends to 1. SNR gain also tends to 1 when the NC is gradually transformed to linear cavity. Proposed enhancement of SNR due to the SR is not dependent of noise type, which is prevalent in interferometer. Particularly proposed approach is capable to increase signal-to-displacement noise ratio.
arXiv comment24 pages, 10 figures
References in corpus (8)
- A Comprehensive Study of Binary Compact Objects as Gravitational Wave Sources: Evolutionary Channels, Rates, and Physical Properties
- Conversion of conventional gravitational-wave interferometers into QND interferometers by modifying their input and/or output optics
- Quantum noise in second generation, signal-recycled laser interferometric gravitational-wave detectors
- Experimental demonstration of a squeezing enhanced power recycled Michelson interferometer for gravitational wave detection
- Analysis of LIGO data for gravitational waves from binary neutron stars
- Gravitational waves from inspiraling compact binaries: Validity of the stationary-phase approximation to the Fourier transform
- Dual-Resonator Speed Meter for a Free Test Mass
- Advanced configuration of gravitational-wave interferometer on the base of "sensitive mode" in "white-light cavity"
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