Simultaneous electromagnetically induced transparency and absorption in thermal atomic medium

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2017,（9）
• 页码范围: 41-45
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL201715.090201

摘要

A three-level lambda system driven by multicolor control,pump,and probe fields is investigated.The pump and probe fields are derived from the same laser with opposite propagating directions.Due to the Doppler effect,the zero group-velocity atoms face bichromatic fields,while other atoms face trichromatic fields.The atomic medium shows distinct characteristics and exhibits simultaneous electromagnetically induced transparency (EIT) and electromagnetically induced absorption (EIA) at two frequencies.EIT and EIA peaks have a fixed relationship with frequency,which is determined by the Doppler shifts.