超精细结构对激光与二能级原子相互作用的影响

Coherent dynamics of a single two-level atom in laser field: hyperfine structure case

应用半经典理论建立了一个简化模型 ,对1 57Gd原子在激光作用下 17795 2 6 7cm- 1 (9D3 )←→ 5 32 977cm- 1 (9D4)的能级跃迁进行计算并给出了计算结果 ,提出相应的理论解释 ,分析了超精细结构对激光与二能级原子相互作用的影响 .

The influence of the atomic hyperfine structure on the dynamics of a single two-level atom in laser field has been studied in this paper. A simplified model was built up. With this model, some calculations were carried out. We draw a conclusion that there exists an optimal laser frequency when the maximal average probability on the upper energy level is required. The laser intensity has little influence on the probability that the atom stays on a certain energy level.