Electromagnetically induced transparency in cold 85Rb atoms trapped in the ground hyperfine F = 2 state

TL;DR

This paper demonstrates electromagnetically induced transparency (EIT) in cold 85Rb atoms trapped in the F=2 hyperfine ground state, analyzing two $$-level systems and the effects of magnetic sublevels and Rabi frequency.

Contribution

It provides experimental observation and theoretical analysis of EIT in cold 85Rb atoms specifically in the F=2 hyperfine ground state, exploring different hyperfine transitions.

Findings

EIT observed in cold 85Rb atoms in F=2 state

Effects of magnetic sublevels on EIT signals analyzed

Influence of Rabi frequency on EIT signal strength studied

Abstract

We report electromagnetically induced transparency (EIT) in cold 85Rb atoms, trapped in the lower hyperfine level F = 2, of the ground state 5$^{2}S_{1/2}$ (Tiwari V B \textit{et al} 2008 {\it Phys. Rev.} A {\bf 78} 063421). Two steady state $\Lambda$-type systems of hyperfine energy levels are investigated using probe transitions into the levels F$^{\prime}$ = 2 and F$^{\prime}$ = 3 of the excited state 5$^{2}P_{3/2}$ in the presence of coupling transitions F = 3 $\to$ F$^{\prime}$ = 2 and F = 3 $\to$ F$^{\prime}$ = 3, respectively. The effects of uncoupled magnetic sublevel transitions and coupling field's Rabi frequency on the EIT signal from these systems are studied using a simple theoretical model.