[PDF] Top 20 Experiments with a laser interferometric gravitational wave antenna

... In this appendix we present a heuristic explanation of the modulation technique developed by Drever et al: [60] for determining the relative phase or frequency error betwee[r] ... See full document

... Any theory of gravity that avoids instantaneous action at a distance must feature some kind of gravitational waves. Even Newtonian gravity can be modified to account for propa- gation delays from massive bodies ... See full document

... classical laser input initially increases interferometer sensitivity, eventually the Michelson interferometer topology employed in existing detectors reaches the standard quantum limit preventing further ... See full document

... similar to the corresponding curve for the UG detector. High-pass and low-pass (anti- aliasing) filters, with corner frequencies of 320 Hz and 4 kHz respectively, were applied to the data before it was recorded. Their ... See full document

... 173 Figure 11.10: Test cavity mode identification. The red lines indicate modes predicted by the FEA model shown in Fig. 11.9. Finally, with the slight reduction in the high-frequency noise, it became clear that there ... See full document

... the gravitational-wave science workflow after calibrating the data is searching the data for gravitational-wave ...of gravitational waves or set new upper limits on the rate of ... See full document

... several experiments con- ducted to understand this theory. Experiments to measure the thermal expansion of mirror substrates and coatings use the pho- tothermal effect in a cross-polarized Fabry-Perot ... See full document

... the antenna acceptance to provide direction discrimination, in theory the PSF should not vary with right ascension of the source, although it will vary with ...the gravitational waves, which limits the ... See full document

... second laser, reducing cost and control loop ...auxiliary laser is replaced with two AOMs, which up-shift and down-shift the frequency of a portion of the main laser ...squeezing experiments ... See full document

... the laser and not on ...cident laser light, and as such is not a suitable method for producing fibers of several hundred microns ...asymmetric laser heating arrangement to produce an elliptical ... See full document

... 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 ...scale, laser ... See full document

... site selection and suspension requirements, and optical design plans for ET. The optical design, like the current generation of detectors, would be based on dual-recycled Michelson interferometers with Fabry-Perot arm ... See full document

... The experiments to measure the effective temperature of shunt resistors as a func- tion of the dissipated power and cooling fin size were performed in a dilution a re- frigerator in ... See full document

... the gravitational wave ...NIR Laser-diodes as the sources of illumination, highlighted the need to avoid fringing effects at the borders of the fibres’ shadows, which otherwise could compromised the ... See full document

... active laser links, between three identical spacecraft in a triangular formation separated by ...heterodyne laser interferometers measure with pm Hz 1/2 sensitivity in both directions along each arm, using ... See full document

... the Laser Interferometer Space ...phase-locked laser transponders with picometer accuracy, LISA would have achieved sufficient sensitivity to measure a rich spectrum of sources in this band over a multiyear ... See full document

... mechanical experiments, exemplified by the work of Cavendish, Eotvos, Dicke, ...on gravitational waves there are masses isolated from the external noise, in conditions as similar to the ones of ideal bodies ... See full document

... coatings [93]. These dopants at the level of 25% have been shown to lower the mechanical loss by approximately 40%. There has also been significant progress in understanding the link be[r] ... See full document

... the interferometric gravitational wave detectors, such as the Advanced Laser Interferometer Gravitational wave Observatory (LIGO), is limited by quantum shot noise, quantum ... See full document

... by a system of sensors and actuators, intended to compensate for drifts in, and excitations of, the suspension [6]. The lateral eigenmodes, or ‘Violin-Modes,’ of the vertically orientated silica suspension fibres are ... See full document