主要研究了多缀饰四波混频Autler-Townes (AT)分裂的相干控制。通过控制外加缀饰场的数量使四波混频信号由单缀饰向级联双缀饰转变,其中单缀饰和双缀饰四波混频信号通过扫描探测场失谐可以观察到AT分裂现象,并且在双缀饰四波混频信号中观察到了二级AT分裂现象。最后分析了AT分裂位置和宽度的影响因素。研究结果表明,通过控制缀饰场Rabi频率和失谐可实现AT分裂位置和宽度的相干控制。

The coherent control of multi-dressed four-wave mixing (FWM) Autler-Townes (AT) splitting is mainly investigated. It is shown that the transformation of the FWM signals from singly-dressing to cascade doubly-dressing is realized by controlling the quantity of the additional dressing fields. Moreover, the AT splitting phenomena of the singly-dressed or doubly-dressed FWM signals can be observed when the frequency detuning of probe field is scanned. The second-order AT splitting phenomena of the doubly-dressed FWM signal is also observed. The factors influencing the position and linewidth of AT splitting are finally analyzed. The research results show that the position and linewidth of AT splitting can be coherently controlled by Rabi frequency or frequency detuning of the dressing field.