interferometric gravitational wave detector
Length Sensing and Control of a Prototype Advanced Interferometric Gravitational Wave Detector
... A truly vexing aspect of the LSC scheme described in chapter 6 is the inevitable presence of offsets in the various error signals, a consequence of the imbalanced sidebands that result from having a detuned signal cavity ...
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Invited Article : CO2 laser production of fused silica fibers for use in interferometric gravitational wave detector mirror suspensions
... was developed that is capable of meeting requirements for strength, thermal noise performance, and dimensional toler- ance for the next generation of gravitational wave detector mirror suspensions. ...
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An investigation of eddy-current damping of multi-stage pendulum suspensions for use in interferometric gravitational wave detectors
... laser interferometric gravitational-wave observatory ) ...German/UK interferometric gravitational wave detector, currently being ...that detector all the low ...
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Enhanced sensitivity of the LIGO gravitational wave detector by using squeezed states of light
... an interferometric gravitational wave detector enter through the antisymmetric port of the interferometer, mix with the signal field produced at the beamsplitter by a passing ...
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First cross-correlation analysis of interferometric and resonant-bar gravitational-wave data for stochastic backgrounds
... ALLEGRO detector has a relatively narrow sensi- tive band of 100 Hz centered around 900 Hz near the two normal modes of the mechanical bar-resonator ...the detector can first be heterodyned with a ...
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First cross-correlation analysis of interferometric and resonant-bar gravitational-wave data for stochastic backgrounds
... Sec. III describes the LLO and ALLEGRO experimen- tal arrangements, including the data acquisition and strain calibration for each instrument. Sec. IV describes the cross-correlation method and its application to the ...
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Experimental demonstration of a gravitational wave detector configuration below the shot noise limit
... improve interferometric sensitivity, to date there has been no experimental demonstration of squeezing applied to an interferometer bearing any resemblance to a GW ...
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Apparatus for dimensional characterization of fused silica fibers for the suspensions of advanced gravitational wave detectors
... advanced interferometric gravitational wave ...Washington detector site, in readi- ness for continued use in checking the quality of suspension fibers produced for suspensions that will be ...
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Brownian Thermal Noise in Interferometric Gravitational Wave Detectors and Single Photon Optomechanics
... detect gravitational waves started in the 1960s when Joseph Weber con- structed resonant bars and attempted to read out the excitations of the bars by gravitational-wave bursts ...interferometer ...
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A source of illumination for low-noise 'Violin-Mode' shadow sensors, intended for use in interferometric gravitational wave detectors
... In order first to find the DC ‘responsivity,’ a vertically orientated 400 µm diameter silica test fibre, approximately 150 mm long, was translated (in the ξ-direction of Figure 1) at a constant rate of a few tens of µm ...
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Gravitational Wave (GW) Classification, Space GW Detection Sensitivities and AMIGO (Astrodynamical Middle-frequency Interferometric GW Observatory)
... GW detector concepts to extend the present ground-based interferometers detection spectral range, ...astrophysical gravitational waves in this frequency band is ...the detector sensitivity in this ...
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A gravitational wave detector operating beyond the quantum shot-noise limit: Squeezed light in application
... Figure 2. (a) Interferometric GW detectors use high power light fields to reduce the relative shot noise. Limitations occur because the arm cavity linewidth needs to be larger than the desired signal band, and an ...
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A step-wise steerable source of illumination for low-noise "Violin-Mode" shadow sensors, intended for use in interferometric gravitational wave detectors
... photodiode’ detector, this having essentially no ‘dead-band’ between its two sensing elements ...in detector elements PDa and PDb ...the detector, and for calibrating the DC (and hence, AC) ...
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Results of the first coincident observations by two laser-interferometric gravitational wave detectors
... the detector, such as the broad-band sensitivity to kilohertz bursts in short time slices of filter output and various housekeeping indicators (microphone and seismometer signals ...
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Squeezed light sources for current and future interferometric gravitational-wave detectors
... Frequency-dependent squeezing will be required to achieve broadband sensitivity improve- ment once aLIGO is limited by radiation pressure noise [150]. Increasing the level of frequency- independent squeezing (only ...
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A 'Violin-Mode' shadow sensor for interferometric gravitational wave detectors
... each detector were aligned with, rather than being skewed relative to, the orientation of their fibre’s ...split-photodiode detector, they were used in differential pairs in order to increase sensitivity to ...
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Mirror thermal noise in interferometric gravitational wave detectors
... Figure 1.1: Power-recycled GW detector. The x and y arms are Fabry-Perot cavities, made from an Input Test Mass (ITM) and an End Test Mass(ETM). With the beam splitter (BS), these form a Michelson interferometer, ...
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Quantum correlation measurements in interferometric gravitational wave detectors
... We have applied the correlation technique, which ex- plores quantum properties of light, to reveal both classi- cal and quantum noise spectra underlying the observed sensitivity curve of Advanced LIGO. Particularly, in ...
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Mitigating Noise in Interferometric Gravitational Wave Detectors
... Second, we cannot rule out the possibility that the excess “noise” was caused by a true rotation signal. Detailed seismic data for the GW detector sites that set our sensitivity goal suggest this level is too high ...
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Topics in Gravitational Wave Physics
... LISA’s gravitational-wave observations to study, with high precision, the response of a massive central body ...tidal gravitational pull of an orbiting, compact, small-mass object (a white dwarf, ...
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