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Compact Michelson interferometers with subpicometer sensitivity
- Publication Year :
- 2022
- Publisher :
- arXiv, 2022.
-
Abstract
- The network of interferometric gravitational-wave observatories has successfully detected tens of astrophysical signals since 2015. In this paper, we experimentally investigate compact sensors that have the potential to improve the sensitivity of gravitational-wave detectors to intermediate-mass black holes. We use only commercial components, such as sensing heads and lasers, to assemble the setup and demonstrate its subpicometer precision. The setup consists of a pair of Michelson interferferometers that use deep frequency modulation techniques to obtain a linear, relative displacement readout over multiple interference fringes. We implement a laser-frequency stabilisation scheme to achieve a sensitivity of 0.3\,$\text{pm} / \sqrt{\text{Hz}}$ above 0.1\,Hz. The device has also the potential to improve other experiments, such as torsion balances and commercial seismometers.<br />Comment: 7 pages, 3 figures
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....6d34de21d7458ee066ce08ba0e53bdf7
- Full Text :
- https://doi.org/10.48550/arxiv.2202.10274