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Sub-Doppler Laser Cooling and Magnetic Trapping of Erbium



Andrew J. Berglund, Simone Lee, Jabez J. McClelland


We investigate cooling mechanisms in magneto-optically and magnetically trapped erbium. We find efficient sub-Doppler cooling in our trap, which can persist even in large magnetic fields due to the near degeneracy of two Lande g factors. Furthermore, a continuously loaded magnetic trap is demonstrated where we observe temperatures below 25 υK. These favorable cooling and trapping properties suggest a number of scientific possibilities for rare-earth-metal atomic physics, including narrow linewidth laser cooling and spectroscopy, unique collision studies, and degenerate bosonic and fermionic gases with long-range magnetic dipole coupling.
Physical Review A (Atomic, Molecular and Optical Physics)


laser cooling, magnetic trapping, rare-earth elements


Berglund, A. , Lee, S. and McClelland, J. (2007), Sub-Doppler Laser Cooling and Magnetic Trapping of Erbium, Physical Review A (Atomic, Molecular and Optical Physics), [online], (Accessed May 24, 2024)


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Created November 27, 2007, Updated February 19, 2017