研究了劣腔内二能级原子与单模腔场的双光子相互作用。腔内原子受外加相干光场驱动，并向一般真空态自发辐射。

The two photon interaction of a two level atom with a single mode radiation in a bad cavity is studied.

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本文利用宏观非线性极化模型，分析了相干驱动内腔二次谐波过程中光场的动力学演化行为。

Using the macroscopic nonlinear polarization model, we discussed in detail the dynamic evolution behaviors of opt ioal field in coherent driving intraoavity second-harmonic generation (ISHG).

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