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  Optical layout for a 10m Fabry-Perot Michelson interferometer with tunable stability

Gräf, C., Hild, S., Lück, H., Willke, B., Strain, K. A., Goßler, S., et al. (2012). Optical layout for a 10m Fabry-Perot Michelson interferometer with tunable stability. Classical and quantum gravity, 29(7): 075003. doi:10.1088/0264-9381/29/7/075003.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-A578-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-A579-C
Genre: Journal Article

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1112.1804 (Preprint), 550KB
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 Creators:
Gräf, Christian1, Author              
Hild, Stefan1, Author              
Lück, Harald1, Author              
Willke, Benno1, Author              
Strain, Kenneth A.1, Author              
Goßler, Stefan1, Author              
Danzmann, Karsten1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24010              

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Free keywords: Physics, Optics, physics.optics, Physics, Instrumentation and Detectors, physics.ins-det,Quantum Physics, quant-ph
 Abstract: The sensitivity of high-precision interferometric measurements can be limited by Brownian noise within dielectric mirror coatings. This occurs, for instance, in the optical resonators of gravitational wave detectors where the noise can be reduced by increasing the laser beam size. However, the stability of the resonator and its optical performance often impose a limit on the maximally feasible beam size. In this article we describe the optical design of a 10\,m Fabry-P\'erot Michelson interferometer with tunable stability. Our design will allow us to carry out initial commissioning with arm cavities of high stability, while afterwards the arm cavity length can be increased stepwise towards the final, marginally stable configuration. Requiring only minimal hardware changes, with respect to a comparable "static" layout, the proposed technique will not only enable us to explore the stability limits of an optical resonator with realistic mirrors exhibiting inevitable surface imperfections, but also the opportunity to measure coating Brownian noise at frequencies as low as a few hundred Hertz. A detailed optical design of the tunable interferometer is presented and requirements for the optical elements are derived from robustness evaluations.

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 Dates: 2011-12-082012
 Publication Status: Published in print
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 Identifiers: arXiv: 1112.1804
DOI: 10.1088/0264-9381/29/7/075003
URI: http://arxiv.org/abs/1112.1804
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Title: Classical and quantum gravity
Source Genre: Journal
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Publ. Info: Bristol, U.K. : Institute of Physics
Pages: - Volume / Issue: 29 (7) Sequence Number: 075003 Start / End Page: - Identifier: ISSN: 0264-9381
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925513480_1