光与原子系统相互作用中反旋项的影响

Effect of Counter-Rotating Component in An Interaction between Light Field and Atomic System

采用共振能级结构模型,研究了外加场的反旋项对能级系统的影响,并利用缀加态理论给出合理的解释.结果表明,在双能级系统中反旋项主要引起Bloch-Siegert频移,在V-型三能级系统中反旋项将导致Autler-Townes双峰的不对称.

The effect of the counter -rotating component of the applied field on the level system is studied in a double- resonance level configuration and the result is presented in this paper. We show that the counter- rotating component leads to the Bloch- Siegert shift in a two- level system while leads to an asymmetry of the Autler- Townes doublet in a three- level system. The above results are explained via the dressed - state theory.