Free-space confocal magneto-optical spectroscopies at milliKelvin temperatures

B. J. Lawrie; M. Feldman; C. E. Marvinney; Y. Y. Pai

doi:10.1117/12.2595780

1 August 2021 Free-space confocal magneto-optical spectroscopies at milliKelvin temperatures

B. J. Lawrie, M. Feldman, C. E. Marvinney, Y. Y. Pai

Proceedings Volume 11806, Quantum Nanophotonic Materials, Devices, and Systems 2021; 1180604 (2021) https://doi.org/10.1117/12.2595780
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

B. J. Lawrie, M. Feldman, C. E. Marvinney, and Y. Y. Pai "Free-space confocal magneto-optical spectroscopies at milliKelvin temperatures", Proc. SPIE 11806, Quantum Nanophotonic Materials, Devices, and Systems 2021, 1180604 (1 August 2021); https://doi.org/10.1117/12.2595780

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