Microwave excited optical transparency enhancement resonances in Hanle-EIT configuration

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（2）
• 页码范围: 91-94
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201311.022701

摘要

We report an experimental observation of the optical transparency enhancement resonances in Hanle-electromagnetically induced transparency (EIT) configuration with a microwave field excitation.In this experimental system,a strong control field and a weak probe field form three-level A-type configurations of EIT.The fourth level is coupled by an additional microwave field.With the microwave field excitation,the probe field undergoes a process of absorption to transparency when the probe field decreases.Compared with the EIT effect,this result indicates optical transparency enhancement.A simple theoretical model and a numerical simulation are presented to explain the observed experimental results.The applications of these optical features are also discussed.