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Enhanced Magnetic Trap Loading for Atomic Strontium

Published

Author(s)

Gretchen K. Campbell, Daniel Barker, Benjamin Reschovsky, Neal Pisenti

Abstract

We report on a technique to improve the continuous loading of atomic strontium into a magnetic trap from a Magneto-Optical Trap (MOT). This is achieved by adding a depumping laser tuned to the 3 P1 → 3 S 1 (688-nm) transition. The depumping laser increases atom number in the magnetic trap and subsequent cooling stages by up to 65 % for the bosonic isotopes and up to 30 % for the fermionic isotope of strontium. We optimize this trap loading strategy with respect to 688-nm laser detuning, intensity, and beam size. To understand the results, we develop a one-dimensional rate equation model of the system, which is in good agreement with the data. We discuss the use of other transitions in strontium for accelerated trap loading and the application of the technique.
Citation
Physical Review A
Volume
92

Keywords

laser cooling, ultracold atoms

Citation

Campbell, G. , Barker, D. , Reschovsky, B. and Pisenti, N. (2015), Enhanced Magnetic Trap Loading for Atomic Strontium, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.92.043418 (Accessed April 14, 2024)
Created October 26, 2015, Updated June 2, 2021