An Octupole Magneto-Optical Trap for Gray-Molasses Cooling of Potassium-41
ORAL
Abstract
Potassium-41 is challenging to cool and trap optically due to its poorly resolved hyperfine structure. This challenge can be largely overcome with gray-molasses cooling on the D1 line. Here we present our results implementing D1 gray-molasses cooling for potassium-41 in a unique octupole-symmetry magneto-optical trap. The octupole symmetry expands the region of nearly zero magnetic field at the center of the trap, which enhances the effectiveness of sub-Doppler processes. The enhanced cooling improves loading of an optical dipole trap at 1550 nm from the molasses.
*This material is based upon work supported in part by the National Science Foundation EPSCoR Cooperative Agreement OIA-2044049, Nebraska’s EQUATE collaboration. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.This work was completed utilizing the Holland Computing Center of the University of Nebraska, which receives support from the UNL Office of Research and Economic Development, and the Nebraska Research Initiative.
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Presenters
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Khoa Nguyen
- Creighton University