This paper mainly deals with the steady-state population of a moving ladder-type three-level atom ( in the case of nearly equispaced levels ) driven by a superposition of a monochromatic laser wave with a broad-band squeezed vacuum .

本文主要研究宽带压缩真空下，一束单色 激光驱动的运动梯形 三 能级原子（能级间隔几乎相等）的稳态布居。

Propagation of light pulses through a three-level medium and selective optical excitation for isotope separation using a short laser pulse

光脉冲在 三 能级介质中的传播和短 脉冲的同位素选择性激发

The Langevin quantum theory has been used to treat the optically pumped three-level laser system .

本文采用Langevin量子理论处理光泵 三 能级 激光体系。

Theoretical study of the pump light absorption inside a three-level solid state laser medium

三能 级固体 激光介质对抽运光吸收的理论研究

Considering the EDF as a homogeneously broadened three-level system the operation principle of this laser is discussed and the output characteristics is simulated .

采用掺铒光纤的均匀展宽 三 能级系统理论模型，分析了该 激光器的工作原理，并对其输出特性进行了数值模拟。

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 .

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。

In the semi-classical theory and dipole approximation we gets the evolution equations of the interaction of the three-level atoms with the two-photon Raman laser system and the velocity parameter are also taken into account in the wave function .

首先利用半经典理论，作偶极近似，讨论了 三 能级原子系统和双光子的拉曼 激光相互作用过程，在波函数中加入了速度参量，得到了 三 能级系统的演化方程。

Population of Dense V-type Three-level Medium in Few-cycle Laser Pulses

少周期 脉冲在稠密V型 三 能级介质中传播时的粒子布居演化

The steady state gain and lasing in a closed coherently and incoherently pumped a three-level 2-type atomic system are analyzed . The condition of lasing without population inversion and the laser intensity are obtained .

本文分析了一个被相干和非相干泵浦的 三 能级原子系统的稳态增益和激光特性，得出产生无反转激光的条件和 激光的强度。

The behavior of the three-level single-mode laser in the presence of an applied field and a saturable absorber is revealed near the losing - threshold .

本文描写了有注入外场和可饱和吸收体的 三 能级单模 激光器于阈值附近的行为。