Details
| Original language | English |
|---|---|
| Article number | 015012 |
| Journal | Classical and quantum gravity |
| Volume | 33 |
| Issue number | 1 |
| Publication status | Published - 14 Dec 2015 |
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 polarization-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 Δ n ≈ 10 -7 at a laser wavelength of 1550 nm 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.
Keywords
- crystalline silicon, birefringence, gravitational wave detection, Einstein telescope
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Classical and quantum gravity, Vol. 33, No. 1, 015012, 14.12.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Birefringence measurements on crystalline silicon
AU - Krueger, Christoph
AU - Heinert, Daniel
AU - Khalaidovski, Alexander
AU - Steinlechner, Jessica
AU - Nawrodt, Ronny
AU - Schnabel, Roman
AU - Lueck, Harald
N1 - Publisher Copyright: © 2016 IOP Publishing Ltd.
PY - 2015/12/14
Y1 - 2015/12/14
N2 - 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 polarization-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 Δ n ≈ 10 -7 at a laser wavelength of 1550 nm 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.
AB - 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 polarization-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 Δ n ≈ 10 -7 at a laser wavelength of 1550 nm 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.
KW - crystalline silicon
KW - birefringence
KW - gravitational wave detection
KW - Einstein telescope
UR - http://www.scopus.com/inward/record.url?scp=84949653201&partnerID=8YFLogxK
U2 - 10.1088/0264-9381/33/1/015012
DO - 10.1088/0264-9381/33/1/015012
M3 - Article
VL - 33
JO - Classical and quantum gravity
JF - Classical and quantum gravity
SN - 0264-9381
IS - 1
M1 - 015012
ER -