Current controllers for optimizing laser cooling on cold atom experiments

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...

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Bibliographic Details
Published inReview of scientific instruments Vol. 95; no. 8
Main Author Sabulsky, D. O.
Format Journal Article
LanguageEnglish
Published United States American Institute of Physics 01.08.2024
Subjects
Cold atoms
Current sources
Design optimization
Laser cooling
Magnetic fields
Operational amplifiers
Raman spectroscopy
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ISSN0034-6748
1089-7623
1089-7623
DOI10.1063/5.0190625

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Summary: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.
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ISSN:0034-6748
1089-7623
1089-7623
DOI:10.1063/5.0190625