Large atom number dual-species magneto-optical trap for fermionic 6Li and 40K atoms
Abstract
We present the design, implementation and characterization of a dual-species magneto-optical trap (MOT) for fermionic 6Li and 40K atoms with large atom numbers. The MOT simultaneously contains 5.2x10^9 6Li-atoms and 8.0x10^9 40K-atoms, which are continuously loaded by a Zeeman slower for 6Li and a 2D-MOT for 40K. The atom sources induce capture rates of 1.2x10^9 6Li-atoms/s and 1.4x10^9 40K-atoms/s. Trap losses due to light-induced interspecies collisions of ~65% were observed and could be minimized to ~10% by using low magnetic field gradients and low light powers in the repumping light of both atomic species. The described system represents the starting point for the production of a large-atom number quantum degenerate Fermi-Fermi mixture.
Keywords
Cite
@article{arxiv.1103.0637,
title = {Large atom number dual-species magneto-optical trap for fermionic 6Li and 40K atoms},
author = {Armin Ridinger and Saptarishi Chaudhuri and Thomas Salez and Ulrich Eismann and Diogo Rio Fernandes and David Wilkowski and Frédéric Chevy and Christophe Salomon},
journal= {arXiv preprint arXiv:1103.0637},
year = {2015}
}