Thermally induced refractive index fluctuations in transmissive optical components and their influence on the sensitivity of Einstein telescope

Jan Meyer; Walter Dickmann; Stefanie Kroker; Mika Gaedtke; Johannes Dickmann

doi:10.1088/1361-6382/ac6e21

Details

Original language	English
Article number	135001
Journal	Classical and quantum gravity
Volume	39
Issue number	13
Early online date	31 May 2022
Publication status	Published - 7 Jul 2022
Externally published	Yes

Abstract

With a relative length measurement precision of better than 10-23, gravitational wave interferometers are the most precise instruments that have ever been built. With this enormous sensitivity many noise sources potentially effect gravitational wave detector sensitivity, each of which must be investigated to ensure confidence in design sensitivity. We present calculations of photoelastic noise as well as thermo refractive noise in the beam splitter and the input test masses in Einstein telescope (ET). It turns out that the amplitude of the photoelastic noise in the ET low-frequency detector is about five orders of magnitude below the maximum design sensitivity and five orders of magnitude below that of the ET high-frequency detector, whereas thermo refractive noise impairs the design sensitivity by approximately 20%.

Keywords

photoelasticity, gravitational wave detection, thermal noise, Einstein telescope

ASJC Scopus subject areas

Physics and Astronomy(all)
Physics and Astronomy (miscellaneous)

Cite this

Thermally induced refractive index fluctuations in transmissive optical components and their influence on the sensitivity of Einstein telescope. / Meyer, Jan; Dickmann, Walter; Kroker, Stefanie et al.
In: Classical and quantum gravity, Vol. 39, No. 13, 135001, 07.07.2022.

Research output: Contribution to journal › Article › Research › peer review

Meyer, J, Dickmann, W, Kroker, S, Gaedtke, M & Dickmann, J 2022, 'Thermally induced refractive index fluctuations in transmissive optical components and their influence on the sensitivity of Einstein telescope', Classical and quantum gravity, vol. 39, no. 13, 135001. https://doi.org/10.1088/1361-6382/ac6e21

Meyer, J., Dickmann, W., Kroker, S., Gaedtke, M., & Dickmann, J. (2022). Thermally induced refractive index fluctuations in transmissive optical components and their influence on the sensitivity of Einstein telescope. Classical and quantum gravity, 39(13), Article 135001. https://doi.org/10.1088/1361-6382/ac6e21

Meyer J, Dickmann W, Kroker S, Gaedtke M, Dickmann J. Thermally induced refractive index fluctuations in transmissive optical components and their influence on the sensitivity of Einstein telescope. Classical and quantum gravity. 2022 Jul 7;39(13):135001. Epub 2022 May 31. doi: 10.1088/1361-6382/ac6e21

Meyer, Jan ; Dickmann, Walter ; Kroker, Stefanie et al. / Thermally induced refractive index fluctuations in transmissive optical components and their influence on the sensitivity of Einstein telescope. In: Classical and quantum gravity. 2022 ; Vol. 39, No. 13.

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abstract = "With a relative length measurement precision of better than 10-23, gravitational wave interferometers are the most precise instruments that have ever been built. With this enormous sensitivity many noise sources potentially effect gravitational wave detector sensitivity, each of which must be investigated to ensure confidence in design sensitivity. We present calculations of photoelastic noise as well as thermo refractive noise in the beam splitter and the input test masses in Einstein telescope (ET). It turns out that the amplitude of the photoelastic noise in the ET low-frequency detector is about five orders of magnitude below the maximum design sensitivity and five orders of magnitude below that of the ET high-frequency detector, whereas thermo refractive noise impairs the design sensitivity by approximately 20%.",

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AU - Gaedtke, Mika

AU - Dickmann, Johannes

N1 - Funding Information: This work is partially funded by the Project 17FUN05 ‘PhotOQuant’ within the Programme EMPIR. The EMPIR initiative is co-founded by the European Union’s Horizon 2020 Research and Innovation Program and the EMPIR Participating Countries. The authors also acknowledge support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germanys Excellence Strategy—EXC-2123 QuantumFrontiers—390837967.

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Research@Leibniz University