本文采用半经典理论方法研究了在短脉冲作用下，被共振微波场驱动的三能级原子极化强度振幅和粒子数差随时间的变化。

The Polarization and Population difference of the three-level atom, driven bya microwave field and interacted by a strong short laser pulse, is studied by me-ans of semiclassical theory in the paper.

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本文采用半经典理论方法研究了在短脉冲作用下，被共振微波场驱动的三能级原子极化强度振幅和粒子数差随时间的变化。

The Polarization and Population difference of the three-level atom, driven bya microwave field and interacted by a strong short laser pulse, is studied by me-ans of semiclassical theory in the paper.

youdao