双相干辐射场下四能级的相干烧孔研究

摘要

该文通过一个四能级原子系统，在一个饱和场和两个相干耦合场驱动下，分析原子吸收光谱．采用耦合光与探测光同向。且与饱和光反方向的光路安排，可以观察到6个相干光学烧孔和一个电磁感应透明窗口，在缀饰态表象下解释相干光学烧孔的形成，并计算烧孔在吸收谱中的位置．%In this paper, in the four - level atomic system, we analyze the atomic absorbing spectra driven by one saturation field and two coherent coupling fields. There are six coherent hole -burnings （CHBs） and one electromagnetically induced transparency （EIT） in the spectra, when the coupling lasers co -propagates with the probe laser and counter - propagates with saturating lasers. We interpret the reason of the CHB and calculate the position of the CHB in absorbing spectra.