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arXiv · 2103.06851

Free-space confocal magneto-optical spectroscopies at milliKelvin temperatures

B. J. Lawrie·M. Feldman·C. E. Marvinney·Y. Y. Pai
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Abstract

We describe the operation of a free-space confocal optical microscope operated in a dilution refrigerator. The microscope is installed on a cold insertable probe to enable fast sample exchange while the refrigerator is held at low temperatures. A vector magnet provides a 6 T field normal to the sample and 1 T fields at arbitrary angles. A variety of optical microscopies and spectroscopies, including photoluminescence, Raman, magneto-optical Kerr effect, and spin relaxometry measurements are described, and some of the challenges associated with performing these measurements at milliKelvin temperatures are explored.

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B. J. Lawrie, M. Feldman, C. E. Marvinney, Y. Y. Pai. 2021-03-11. Free-space confocal magneto-optical spectroscopies at milliKelvin temperatures. https://arxiv.org/abs/2103.06851

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