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dc.identifier.uri Heinert, D. Craig, K. Grote, H. Hild, S. Lück, H. Nawrodt, R. Simakov, D.A. Vasilyev, D.V. Vyatchanin, S.P. Wittel, H. 2018-11-27T08:37:53Z 2018-11-27T08:37:53Z 2014
dc.identifier.citation Heinert, D.; Craig, K.; Grote, H.; Hild, S.; Lück, H. et al.: Thermal noise of folding mirrors. In: Physical Review D - Particles, Fields, Gravitation and Cosmology 90 (2014), Nr. 4, 42001. DOI:
dc.description.abstract Current gravitational-wave detectors rely on the use of Michelson interferometers. One crucial limitation of their sensitivity is the thermal noise of their optical components. Thus, for example, fluctuational deformations of the mirror surface are probed by a laser beam being reflected from the mirrors at normal incidence. Thermal noise models are well evolved for that case but mainly restricted to single reflections. In this work, we present the effect of two consecutive reflections under a non-normal incidence onto mirror thermal noise. This situation is inherent to detectors using a geometrical folding scheme such as GEO 600. We revise in detail the conventional direct noise analysis scheme to the situation of non-normal incidence allowing for a modified weighting function of mirror fluctuations. An application of these results to the GEO 600 folding mirror for Brownian, thermoelastic, and thermorefractive noise yields an increase of displacement noise amplitude by 20% for most noise processes. The amplitude of thermoelastic substrate noise is increased by a factor of 4 due to the modified weighting function. Thus, the consideration of the correct weighting scheme can drastically alter the noise predictions and demands special care in any thermal noise design process. eng
dc.language.iso eng
dc.publisher College Park, MD : American Physical Society
dc.relation.ispartofseries Physical Review D - Particles, Fields, Gravitation and Cosmology 90 (2014), Nr. 4
dc.rights CC BY 3.0 Unported
dc.subject gravitational-wave detector eng
dc.subject thermal noise eng
dc.subject GEO 600 eng
dc.subject folding mirror eng
dc.subject.ddc 530 | Physik ger
dc.title Thermal noise of folding mirrors
dc.type article
dc.type Text
dc.relation.issn 1550-7998
dc.bibliographicCitation.issue 4
dc.bibliographicCitation.volume 90
dc.bibliographicCitation.firstPage 042001
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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    Frei zugängliche Publikationen aus An-Instituten der Leibniz Universität Hannover

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