Double Electromagnetically Induced Transparency in a Tripod-type Atom System

TL;DR

This paper investigates double electromagnetically induced transparency (DEIT) in a four-level tripod atomic system, revealing its equivalence to two Lambda configurations and analyzing the resulting transparency windows.

Contribution

It introduces the concept of DEIT in a tripod system, demonstrating its equivalence to two Lambda systems and discussing its properties and experimental feasibility.

Findings

DEIT occurs in a four-level tripod system under certain conditions.

Double transparency windows are characterized and analyzed.

An experimental scheme for observing DEIT is proposed.

Abstract

The electromagnetically induced transparency (EIT) phenomenon in a four level atomic system with tripod configuration is studied. The results show that this configuration is equivalent to the combination of two single three-level $\Lambda$ configurations, which, under certain conditions, results in the so-called double-EIT (DEIT) phenomenon. The properties of the double transparency windows for DEIT are discussed in detail and the possible experimental scheme is proposed.