Results 1 to 10 of about 27,580 (246)
Scientific Reports, 2023 In high-sensitive laser interferometers, such as the gravitational-wave detector KAGRA, ultra-high-quality mirrors are essential. In the case of KAGRA, where cavity mirrors are cooled down to 20 K, large-size Sapphire crystals are used as the substrate ...
Simon Zeidler +4 more
doaj +1 more source
Applied Sciences, 2023 The Fabry–Pérot (FP) cavity is the essential component of an ultra-stable laser (USL) for gravitational wave detection, which couples multiple physics fields (optical/thermal/mechanical) and requires ultra-high precision.
Hang Zhao +5 more
doaj +1 more source
Sensors, 2023 To increase the interferometric measurement resolution in the Taiji program, we present a noise suppression method in this paper. Taking the specific micro-force perturbation and temperature fluctuation in the Taiji-1 interferometer as an example, we set
Juan Wang +5 more
doaj +1 more source
A Spaceborne Mounting Method for Fixing a Cubic Fabry–Pérot Cavity in Ultra-Stable Lasers
Applied Sciences, 2022 A spaceborne mounting method for fixing a 100 × 100 × 100 mm cubic Fabry–Pérot (FP) cavity is presented. The method constrains the FP cavity in eight directions with a titanium bracket, PEEK gaskets, and vacuum glue.
Pengyang Zhao +13 more
doaj +1 more source
AAPPS Bulletin, 2023 We briefly review the status of applying quantum squeezing to aid the search for gravitational waves with km-scale laser interferometers operating in the audio frequency band.
Mengyao Wang, Fan Zhang
doaj +1 more source
Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum
Sensors, 2023 In space gravitational wave detection missions, a drag-free system is used to keep the test mass (TM) free-falling in an ultralow-noise environment.
Shaoxin Wang +8 more
doaj +1 more source
Probing supermassive black hole binaries with orbital resonances of laser-ranged satellites
European Physical Journal C: Particles and Fields, 2023 Coalescing supermassive black hole binaries (SMBHBs) are the primary source candidates for low frequency gravitational wave (GW) detections, which could bring us deep insights into galaxy evolutions over cosmic time and violent processes of spacetime ...
Minghui Du +4 more
doaj +1 more source
Review of closed drift thruster neutral flow dynamics
AIP Advances, 2023 Operation of closed drift thruster (CDT) relies mainly on neutral gas, whose trajectory and distribution in the flow field have a significant influence on performance.
Shixu Lu +7 more
doaj +1 more source
A Broadband Signal Recycling Scheme for Approaching the Quantum Limit from Optical Losses
Galaxies, 2021 Quantum noise limits the sensitivity of laser interferometric gravitational-wave detectors. Given the state-of-the-art optics, the optical losses define the lower bound of the best possible quantum-limited detector sensitivity.
Teng Zhang, Joe Bentley, Haixing Miao
doaj +1 more source
No tension between assembly models of super massive black hole binaries and pulsar observations
Nature Communications, 2018 Pulsar timing arrays enable the search for the isotropic gravitational-wave (GW) background originating from super massive black hole binary populations, but impose a stringent upper limit on the GW characteristic amplitude.
Hannah Middleton +4 more
doaj +1 more source