单缀饰四波混频缀饰效应的频率控制

Control of singly-dressed four-wave mixing dressing effect by frequency

主要研究了单缀饰四波混频信号的频率控制。首先,通过扫描探测场失谐及扫描缀饰场失谐两种方法,分别获得四波混频信号的Autler-Townes分裂和增强抑制现象;接着,在零失谐、小失谐和大失谐三个位置处,对比了两种扫描方法;在扫描缀饰场失谐时,观察到四波混频信号从纯抑制到半增强半抑制的转化过程;最后,通过对比发现,当探测场失谐越大时,缀饰场的缀饰效应就越弱。研究结果表明,相比于扫描探测场失谐,扫描缀饰场失谐的方法能实现对缀饰效应的直接测量。

The frequency control of singly-dressed four-wave mixing(FWM) is mainly investigated in the paper. The Autler-Townes(AT) splitting and half enhancement/half suppression of FWM are respectively observed by scanning the frequency detuning of probe field and dressing field. The transformation of the dressing FWM process from suppression to half enhancement/half suppression is realized when scanning the frequency detuning of dressing field by controlling the frequency detuning of probe field at 0, small value, and large value separately. Moreover, it is shown the dressing effect is weaker when the frequency detuning of probe field increases. The research results show that the dressing effect can be measured directly by scanning the frequency detuning of the dressing field.