The weak-signal gain of laser comes from two elementary processes:two-photon process and two-step process.
并指出，激光的弱讯号增益来源于两个基本过程：两个光子过程和两步过程。
Our results show that the laser gain comes from two basic processes, i. e., a two-photon process and a two-step process.
本文的结果表明，激光增益来源于两个基本过程：两个光子过程和两步过程。
The emission spectrum for a pair of dipole dipole coupled identical two level atoms interacting with three mode cavity fields resonantly through 6 photon process has been studied.
研究了两个偶极偶极力关联的等同双能级原子与三模腔场六光子共振相互作用的辐射谱。
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