Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 68, Number 7
Monday–Friday, June 5–9, 2023; Spokane, Washington
Session S07: New Laser Cooling and Trapping Techniques
10:30 AM–12:18 PM,
Thursday, June 8, 2023
Room: 206 B
Chair: Toshi Shimasaki, UCSB
Abstract: S07.00001 : Design and Commissioning of an Octupole Magneto-optical Trap for Sub-Doppler Cooling of 39K*
10:30 AM–10:42 AM
Presenter:
Corbyn D Mellinger
(Creighton University)
Authors:
Corbyn D Mellinger
(Creighton University)
David Loos
(Creighton University)
Benjamin D DalFavero
(Creighton University)
Chance Persons
(Creighton University)
Joe Klomp
(Creighton University)
Jonathan P Wrubel
(Creighton University)
To this end, we have developed and built a trapping field using an octupole magnetic field, which combines elements of both near-zero fields at the trap center for sub-Doppler cooling, and restoring forces at the boundary to generate cold atoms for long enough times to load an optical dipole trap at high density. In this talk, we discuss and design and construction of our octupole symmetry trap from two sets of quadrupole symmetry anti-Helmholtz coils. We also elucidate techniques used to align and test the coils and show results on the lifetime and temperature of atoms trapped in the MOT. This work allows for more consistent and rapid loading of an optical dipole trap for atoms with poorly resolved hyperfine structure such as potassium.
*This research was made possible by the Nebraska EPSCOR Emergent Quantum Materials and Technologies, NSF OIA-2044049
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