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arXiv · 2406.19944

Tutorial: Current controllers for optimizing laser cooling on cold atom experiments

D. O. Sabulsky
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Abstract

The design of single chip current source based on a common power operational amplifier is presented and demonstrated for the purpose of controlling applied magnetic fields using bias/shim electromagnets in cold atom experiments. The efficacy of the design is realized via application to red-detuned polarization-gradient cooling of $^{87}$Rb down to 3 $\mu$K. Further, we demonstrate Raman spectroscopy using these devices to apply current and so generate a precise, accurate, and reproducible magnetic field. This work is intended as a short tutorial for new graduate students and postdocs of laser cooling and trapping.

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D. O. Sabulsky. 2024-06-28. Tutorial: Current controllers for optimizing laser cooling on cold atom experiments. https://doi.org/10.1063/5.0190625

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