| Autor: |
Li, Kai, Zhang, Dongfang, Gao, Tianyou, Peng, Shi-Guo, Jiang, Kaijun |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. A 92, 013419, 2015 |
| Druh dokumentu: |
Working Paper |
| Popis: |
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 $6.0\times10^8$ 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. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
