利用几个光周期太赫兹脉冲控制耗散环境中分子定向

We present a theoretical scheme to achieve the nonadiabatically molecular orientation in dissipative environment by THz few-cycle pulses. Numerical calculations are performed by solving the quantum Liouville equation based on multilevel Bloch model. The molecular orientation degree is sensitive to the carrier-envelope phases of the THz pulses. The orientation and the rotational population of CO molecules in dissipative environment (bath) are computed at different pressures and temperatures. The influence of pure decoherence on the molecular orientation is also discussed.