Current controllers for optimizing laser cooling on cold atom experiments
Abstract
The design of a 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 87Rb down to 3 μK. Furthermore, 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.
- Publication:
-
Review of Scientific Instruments
- Pub Date:
- August 2024
- DOI:
- 10.1063/5.0190625
- arXiv:
- arXiv:2406.19944
- Bibcode:
- 2024RScI...95h1401S
- Keywords:
-
- TUTORIALS;
- Physics - Atomic Physics;
- Physics - Instrumentation and Detectors
- E-Print:
- 7 pages, 3 figures, tutorial for newcomers