三能级原子系统的电磁感应透明现象  

Electromagnetic Induced Transparency of a Cascade-type Three-level System

作　　者：杨爱云 刘文娟 YANG Aiyun;LIU Wenjuan(Department of Basic Courses Teaching and Reaching,Xi'an Traffic Engineering Institute,Xi'an 710300)

机构地区：[1]西安交通工程学院公共课部,西安710300

出　　处：《西安交通工程学院学术研究》2021年第1期47-50,共4页Academic Research of Xi'an Traffic Engineering Institute

摘　　要：在级联型三能级系统中,利用密度矩阵方程计算了介质对探测场的吸收和色散。发现在强耦合光同时作用下,在共振频率附近出现电磁感应透明效应,随着控制场拉比频率的增大透明窗口越大,此时介质具有强烈的色散效应,且色散是由物质的折射率决定的,它与物质对光的吸收相关。In a cascade-type three-level system,the absorption and dispersion of the probe field have been calculated by using density matrix equation.The system exhibits an electromagnetic induced transparency phenomenon because of strong coupling of light at the resonance frequency,and it is found that the transparent window is greater with the increasing control field Rabi frequency.At the same time the media has a strong dispersion effect and and the dispersion is determined by the refractive index of the substance,which is related to the absorption of light by the substance.

关 键 词：级联型三能级 密度矩阵方程 电磁感应透明 色散 

分 类 号：O431.2[机械工程—光学工程]