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Hanle electromagnetically induced absorption in open
Published in Institute of Physics Publishing
2015
Volume: 48
   
Issue: 8
Abstract
The influence of the closed Fg = 2 → Fe = 3 transition on the neighboring Fg = 2 → Fe = 1 and Fg = 2 → Fe = 2 open transitions of the 87Rb D2 line, partially resolved under Doppler broadening, is studied at different ellipticities in the Hanle configuration with longitudinal and transverse magnetic field scans. We show that a sign reversal from an electromagnetically induced transparency (EIT) resonance to an electromagnetically induced absorption (EIA) resonance occurs with an increase in ellipticity for the Fg = 2 → Fe = 1 transition in a transverse field scan. This transformation is not observed for a longitudinal field scan. These observations are attributed to the higher amplitude of the EIA resonance for the Fg = 2 → Fe = 3 transition in transverse field scans for elliptical polarized light. The EIA character in the Hanle transmission profile of Fg = 2 → Fe = 1 and Fg = 2 → Fe = 2 transitions is enhanced (weakened) when the laser beam frequency is detuned towards (away from) the Fg = 2 → Fe = 3 transition. We show by computation that at higher ellipticities, a transformation from an EIT to an EIA resonance for the Fg = 2 → Fe = 2 transition occurs at low frequency shifts (towards the Fg = 2 → Fe = 3 transition) in a transverse field scan.
About the journal
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
PublisherInstitute of Physics Publishing
ISSN09534075
Open AccessNo
Concepts (12)
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    Laser beams
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    Quantum optics
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    Transparency
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    ELECTROMAGNETICALLY INDUCED ABSORPTION
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    Electromagnetically induced transparency
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    HANLE EFFECTS
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    LASER-BEAM FREQUENCY
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    LONGITUDINAL FIELDS
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    LOW-FREQUENCY SHIFT
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    TRANSMISSION PROFILES
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    TRANSVERSE MAGNETIC FIELD
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    Resonance