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  Birefringence Measurements on Crystalline Silicon

Krüger, C., Heinert, D., Khalaidovski, A., Steinlechner, J., Nawrodt, R., Schnabel, R., et al. (2016). Birefringence Measurements on Crystalline Silicon. Classical and quantum gravity, 33(1): 015012. doi:10.1088/0264-9381/33/1/015012.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-5B1C-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-EE04-E
Genre: Journal Article

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 Creators:
Krüger, Christoph, Author
Heinert, Daniel, Author
Khalaidovski, Alexander1, Author              
Steinlechner, Jessica, Author
Nawrodt, Ronny, Author
Schnabel, Roman1, Author              
Lück, Harald1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Physics, Optics, physics.optics
 Abstract: Crystalline silicon has been proposed as a new test mass material in third generation gravitational wave detectors such as the Einstein Telescope (ET). Birefringence can reduce the interferometric contrast and can produce dynamical disturbances in interferometers. In this work we use the method of polarisation-dependent resonance frequency analysis of Fabry-Perot-cavities containing silicon as a birefringent medium. Our measurements show a birefringence of silicon along the (111) axis of the order of $\Delta\, n \approx 10^{-7}$ at a laser wavelength of 1550nm and room temperature. A model is presented that explains the results of different settings of our measurements as a superposition of elastic strains caused by external stresses in the sample and plastic strains possibly generated during the production process. An application of our theory on the proposed ET test mass geometry suggests no critical effect on birefringence due to elastic strains.

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 Dates: 2015-04-242016
 Publication Status: Published in print
 Pages: 19 pages, 6 figures, 2 tables
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1504.06503
DOI: 10.1088/0264-9381/33/1/015012
URI: http://arxiv.org/abs/1504.06503
 Degree: -

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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: 33 (1) Sequence Number: 015012 Start / End Page: - Identifier: ISSN: 0264-9381
CoNE: /journals/resource/954925513480_1