Temperature-dependent photo-elastic coefficient of silicon at 1550 nm
Data files
Dec 05, 2023 version files 19.38 KB
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README.md
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Si100_fit_1K.csv
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Si100_raw.csv
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Si110_fit_1K.csv
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Si110_raw.csv
Abstract
The associated paper presents a study on the temperature-dependent photo-elastic coefficient in single-crystal silicon with (100) and (110) orientations at a wavelength of 1550 nm. The measurement of the photo-elastic coefficient was performed using a polarimetric scheme across a wide temperature range from 5 K to 300 K. The experimental setup employed high-sensitivity techniques and incorporated automatic beam path correction, ensuring precise and accurate determination of the coefficient’s values. The results show excellent agreement with previous measurements at room temperature, specifically yielding a value of dn/dσ = −2.463E-11 1/Pa for the (100) orientation. Interestingly, there is a significant difference in photo-elasticity between the different crystal orientations of approximately 50 %. The photo-elastic coefficient’s absolute value increases by approximately 40 % with decreasing temperature down to 5 K. These findings provide valuable insights into the photo-elastic properties of silicon and its behavior under varying mechanical stress, particularly relevant for optomechanical precision experiments like cryogenic gravitational wave detectors and microscale optomechanical quantum sensors.
README: Temperature-dependent photo-elastic coefficient of silicon at 1550 nm
https://doi.org/10.5061/dryad.s7h44j1cw
The current repository contains data on the temperature-dependent photo-elastic coefficient of silicon at 1550 nm. Detailed information regarding the data acquisition process is provided in the original article published in Scientific Reports, accessible via https://doi.org/10.1038/s41598-023-46819-0. We kindly request that you cite the original article when utilizing this dataset.
Description of the data and file structure
For each measured silicon crystal orientation (100) and (110), two files are in the repository:
1. Measurement data: First column: Temperature in K; Second column: dn/ds in 1/Pa; Third column: Error dn/ds in 1/Pa
2. Kramers-Kronig fit: First column: Temperature in K; Second column: dn/ds in 1/Pa