Gordon, N.A. et al. (2017) Experimental demonstration of coupled optical springs. Classical and Quantum Gravity, 34(3), 035020. (doi: 10.1088/1361-6382/aa556f)
![[img]](https://eprints.gla.ac.uk/style/images/fileicons/text.png) |
Text
138051.pdf - Accepted Version 815kB |
Abstract
Optical rigidity will play an important role in improving the sensitivity of future generations of gravitational wave (GW) interferometers, which employ high laser power in order to reach and exceed the standard quantum limit. Several experiments have demonstrated the combined effect of two optical springs on a single system for very low-weight mirror masses or membranes. In this paper we investigate the complex interactions between multiple optical springs and the surrounding apparatus in a system of comparable dynamics to a large-scale GW detector. Using three 100 g mirrors to form a coupled cavity system capable of sustaining two or more optical springs, we demonstrate a number of different regimes of opto-mechanical rigidity and measurement techniques. Our measurements reveal couplings between each optical spring and the control loops that can affect both the achievable increase in sensitivity and the stability of the system. Hence this work establishes a better understanding of the realisation of these techniques and paves the way to their application in future GW observatories, such as upgrades to Advanced LIGO.
| Item Type: | Articles |
|---|---|
| Keywords: | Gravitational waves. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Bell, Dr Angus and Wright, Ms Jennifer and Hild, Professor Stefan and Barr, Dr Bryan and Sorazu Lucio, Dr Borja and Huttner, Dr Sabina and Gordon, Mr Neil and Leavey, Mr Sean and Strain, Professor Kenneth and Graef, Dr Christian |
| Authors: | Gordon, N.A., Barr, B.W., Bell, A., Graef, C., Hild, S., Huttner, S.H., Leavey, S.S., Macarthur, J., Sorazu, B., Wright, J., and Strain, K.A. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Research Centre: | College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research |
| Research Group: | Institute for Gravitational Research |
| Journal Name: | Classical and Quantum Gravity |
| Publisher: | IOP Publishing |
| ISSN: | 0264-9381 |
| ISSN (Online): | 1361-6382 |
| Published Online: | 12 January 2017 |
| Copyright Holders: | Copyright © 2017 IOP Publishing Ltd |
| First Published: | First published in Classical and Quantum Gravity 34(3): 035020 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric