Enhanced trapping of colding lithium by using the multiple-sideband cooling in a two-dimensional magneto-optical trap
Abstract
Trapping lithium with a big number in a simplified experimental setup has difficulties and challenges today. In this paper, we experimentally demonstrate the enhancement of \textsuperscript{6}Li trapping efficiency in a three-dimensional magneto-optical trap (3D MOT) by using the multiple-sideband cooling in a two-dimensional magneto-optical trap (2D MOT). To improve the number of trapped atoms, we broaden the cooling light spectrum to 102 MHz composed of seven frequency components and then trap atoms with a number of which is about 4 times compared to that in the single-frequency cooling. The capture velocity and dependence of atomic number on the laser detuning have been analyzed, where the experimental result has a good agreement with the theoretical prediction based on a simple two-level model. We also analyze the loss rate of alkali metals due to fine-structure exchanging collisions and find that the multiple-sideband cooling is special valid for lithium.
Keywords
Cite
@article{arxiv.1505.03591,
title = {Enhanced trapping of colding lithium by using the multiple-sideband cooling in a two-dimensional magneto-optical trap},
author = {Kai Li and Dongfang Zhang and Tianyou Gao and Shi-Guo Peng and Kaijun Jiang},
journal= {arXiv preprint arXiv:1505.03591},
year = {2017}
}