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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.19334 |
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| _version_ | 1866915041553416192 |
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| author | Moshe, A. Glezer Nagarajan, R. Nagel, U. Rõõm, T. Blumberg, G. |
| author_facet | Moshe, A. Glezer Nagarajan, R. Nagel, U. Rõõm, T. Blumberg, G. |
| contents | We present magneto-optical Kerr effect (MOKE) spectrometer based on a modified Martin-Puplett interferometer, utilizing continuous wave sub-THz low-power radiation in broad frequency range. This spectrometer is capable of measuring the frequency dependence of the MOKE response function, both the Kerr rotation and ellipticity, simultaneously with sub-milliradian accuracy without the need for reference measurement. The instrument's versatility allow it to be coupled to a cryostat with optical windows enabling studies of a variety of quantum materials such as unconventional superconductors, two-dimensional electron gas systems, quantum magnets, and other system showing optical Hall response, at sub-Kelvin temperatures and in high magnetic fields. We demonstrate the functionality of the MOKE spectrometer using an undoped InSb wafer as a test sample. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_19334 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Modified Martin-Puplett interferometer for magneto-optical Kerr effect measurements at sub-THz frequencies Moshe, A. Glezer Nagarajan, R. Nagel, U. Rõõm, T. Blumberg, G. Materials Science Superconductivity Optics We present magneto-optical Kerr effect (MOKE) spectrometer based on a modified Martin-Puplett interferometer, utilizing continuous wave sub-THz low-power radiation in broad frequency range. This spectrometer is capable of measuring the frequency dependence of the MOKE response function, both the Kerr rotation and ellipticity, simultaneously with sub-milliradian accuracy without the need for reference measurement. The instrument's versatility allow it to be coupled to a cryostat with optical windows enabling studies of a variety of quantum materials such as unconventional superconductors, two-dimensional electron gas systems, quantum magnets, and other system showing optical Hall response, at sub-Kelvin temperatures and in high magnetic fields. We demonstrate the functionality of the MOKE spectrometer using an undoped InSb wafer as a test sample. |
| title | Modified Martin-Puplett interferometer for magneto-optical Kerr effect measurements at sub-THz frequencies |
| topic | Materials Science Superconductivity Optics |
| url | https://arxiv.org/abs/2407.19334 |