Absorption spectroscopy of cold caesium atoms confined in a magneto-optical trap

• 来源期刊: 中国物理（英文版）
• 关键词: absorption spectroscopy caesium atoms magneto-optical trap (MOT) V-type three-level system electromagnetically induced transparency (EIT)
• 年，卷（期）: 2004,（10）
• 页码范围: 1669-1673
• 页数: 5页
• 语种: 英文

摘要

Absorption spectra of cold caesium atoms confined in a magneto-optical trap are measured around D2 line at 852nm with a weak probe beam. Absorption reduction dip due to electromagnetically induced transparency (EIT)effect induced by the cooling/trapping field in a V-type three-level system and a gain peak near the cycling transition are clearly observed. Several mechanisms mixed with EIT effect in a normal V-type three-level system are briefly discussed. A simple theoretical analysis based on a dressed-state model is presented for interpretation of the absorption spectra.