CO2 laser production of fused silica fibers for use in interferometric gravitational wave detector mirror suspensions

Hough, J. et al. (2011) CO2 laser production of fused silica fibers for use in interferometric gravitational wave detector mirror suspensions. Review of Scientific Instruments, 82(1), 010901. (doi:10.1063/1.3539776)

Hough, J. et al. (2011) CO2 laser production of fused silica fibers for use in interferometric gravitational wave detector mirror suspensions. Review of Scientific Instruments, 82(1), 010901. (doi:10.1063/1.3539776)

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Publisher's URL: http://dx.doi.org/10.1063/1.3539776

Abstract

In 2000 the first mirror suspensions to use a quasi-monolithic final stage were installed at the GEO600 detector site outside Hannover, pioneering the use of fused silica suspension fibers in long baseline interferometric detectors to reduce suspension thermal noise. Since that time, development of the production methods of fused silica fibers has continued. We present here a review of a novel CO2 laser-based fiber pulling machine developed for the production of fused silica suspensions for the next generation of interferometric gravitational wave detectors and for use in experiments requiring low thermal noise suspensions. We discuss tolerances, strengths, and thermal noise performance requirements for the next generation of gravitational wave detectors. Measurements made on fibers produced using this machine show a 0.8% variation in vertical stiffness and 0.05% tolerance on length, with average strengths exceeding 4 GPa, and mechanical dissipation which meets the requirements for Advanced LIGO thermal noise performance.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Grant, Mr Alastair and Heptonstall, Dr Alastair and Bell, Dr Angus and Hammond, Professor Giles and Robertson, Mr Niall and Tokmakov, Dr Kirill and Cagnoli, Dr Gianpietro and Cantley, Dr Caroline and Rowan, Professor Sheila and Kumar, Mr Rahul and Martin, Dr Iain and Cumming, Dr Alan and Crooks, Dr David and Hough, Professor James and Strain, Professor Kenneth and Jones, Mr Russell and Barton, Dr Mark
Authors: Hough, J., Heptonstall, A., Barton, M.A., Bell, A., Cagnoli, G., Cantley, C.A., Crooks, D.R.M., Cumming, A., Grant, A., Hammond, G.D., Harry, G.M., Jones, R., Kelley, D., Kumar, R., Martin, I.M., Robertson, N.A., Rowan, S., Strain, K.A., Tokmakov, K., and Van Veggel, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Review of Scientific Instruments
ISSN:0034-6748
ISSN (Online):1089-7623
Published Online:21 January 2011

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
337921UK involvement in advanced LIGOKenneth StrainParticle Physics & Astronomy Research Council (PPARC)ST/G504284/1Physics and Astronomy
459312Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/I001085/1Physics and Astronomy