Absorptive reduction and width narrowing in A-type atoms confined between two dielectric walls

• 来源期刊: 中国物理B(英文版)
• 关键词: absorptive reduction width narrowing electromagnetically induced transparency
• 年，卷（期）: 2008,（8）
• 页码范围: 2885-2889
• 页数: 5页
• 语种: 英文

摘要

This paper investigates the absorptive reduction and the width narrowing of electromagnetically induced trans- parency (EIT) in a thin vapour film of A-type atoms confined between two dielectric walls whose thickness is comparable with the wavelength of the probe field. The absorptive lines of the weak probe field exhibit strong reductions and very narrow EIT dips, which mainly results from the velocity slow-down effects and transient behaviour of atoms in a con-fined system. It is also shown that the lines are modified by the strength of the coupling field and the ratio of L/λ, with L the film thickness and A the wavelength of the probe field. A simple robust recipe for EIT in a thin medium is achievable in experiment.