Electromagnetically induced transparency in cold⁸⁵Rb atoms trapped in the ground hyperfineF= 2 state

Abstract

We report electromagnetically induced transparency (EIT) in cold 85 Rb atoms, trapped in the lower hyperfine level F = 2, of the ground state 5 2 S 1/2 (Tiwari V B et al 2008 Phys. Rev. A 78 063421). Two steady state Λ-type systems of hyperfine energy levels are investigated using probe transitions into the levels F ′ = 2 and F ′ = 3 of the excited state 5 2 P 3/2 in the presence of coupling transitions F = 3 → F ′ = 2 and F = 3 → F ′ = 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.

Resolving closely spaced levels for Doppler mismatched double resonance

“…direct, 6P 3/2 (F = 2, 3) → 5S 1/2 (F = 3) and indirect decay channels [48] such as 6P 3/2 (F = 1) → 6S 1/2 → 5P 3/2 → 5S 1/2 (F = 3)). Therefore, optical pumping [49,50] gives rise to enhanced absorption (EA) Doppler-free peaks of the 6P 3/2 hyperfine levels. The numerically simulated absorption spectrum considering only one hyperfine level is plotted in Fig.…”

Observation of dual electromagnetically induced transparencies in cold $^{87}Rb$ atoms

“…The fascinating applications of EIT includes slow light propagation [2][3][4], optical switching [5,6], precise atomic clocks [7], tight laser frequency locking [8,9], precise measurement of optical frequency [10], non-linear optical process [11,12], etc. The basic atomic systems that can exhibit EIT effect are Λ- [13][14][15][16], ladder- [17][18][19] and vee-system [20,21].…”

Electromagnetically induced transparency with Laguerre–Gaussian modes in ultracold rubidium

“…Ultracold gases also offer high densities, typically in the range from 10 9 −10 12 cm −3 . For these reasons, EIT has been extensively studied in this environment [11,12,13,14,15].…”