The processes of population transfer in the ground electronic state of HCl molecule through the three transition schemes are investigated by numerically solving the time-dependent Schrödinger equation. Two harmonic pulses are employed to induce population transfer and the relative phase of the two pulses can control the final population distributions. In the ladder transition scheme, the variation range of the target population with the relative phase is nearly 100% which is larger than that in the multi-photon transition scheme. It is more efficient for the mixed transition scheme to control population transfer between the initial and target states by using the relative phase. Comparing with the multi-photon and ladder schemes, the transition probability of the target population is more sensitive to the two pulse amplitudes in the mixed transition scheme.

中文翻译：

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在两个谐波激光脉冲中通过多个通道进行种群转移

通过数值求解瞬态薛定谔方程，研究了HCl分子在基态电子态中通过三种跃迁方案的总体迁移过程。使用两个谐波脉冲来诱导种群转移，两个脉冲的相对相位可以控制最终的种群分布。在梯形跃迁方案中，目标种群随相对相位的变化范围接近100%，大于多光子跃迁方案中的变化范围。混合过渡方案通过使用相对相位来控制初始状态和目标状态之间的种群转移更有效。与多光子和梯形方案相比，