Narrow absorptive resonances in a four-level atomic system

Abstract

We study the effect of a control beam on a Lambda electromagnetically induced transparency (EIT) system in 87Rb. The control beam couples one ground state to another excited state forming a four level N-system. Phase coherent beams to drive the N-system are produced using a double injection scheme. We show that the control beam can be used to Stark shift or split the EIT resonance. Finally, we show that the when the control beam is on-resonance one observes a Doppler-free and sub-natural absorptive resonance with a width of order 100 kHz. Crucially, this narrow absorptive resonance only occurs when atoms with a range of velocities are present, as is the case in a room temperature vapour.

9 pages, 6 figures

References in corpus (12)

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• Giant electro-optic effect using polarizable dark states
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• Narrow absorptive resonances in a four-level atomic system
• Electro-optic control of atom-light interactions using Rydberg dark-state polaritons
• Controlled photon emission and Raman transition experiments with a single trapped atom

Cited by in corpus (20)

• Control and manipulation of electromagentically induced transparency in a nonlinear optomechanical system with two movable mirrors
• Polarization spectroscopy of an excited state transition
• Narrow absorptive resonances in a four-level atomic system
• Faraday filtering of Raman light in an isotopically pure alkali metal vapor
• Electromagnetically induced absorption in a non-degenerate three-level ladder system
• Sub- and super-luminal light propagation using a Rydberg state
• Off resonance laser frequency stabilization using the Faraday effect
• Role of different type of sub-systems in doubly driven Lambda-system in 87Rb
• Study of a four-level system in vee + ladder configuration
• Coherent population trapping (CPT) versus electromagnetically induced transparency (EIT)
• Recovering the homogeneous absorption of inhomogeneous media
• Wavelength mismatch effect in electromagnetically induced absorption
• Ultralow-power all-optical switching via a chiral Mach-Zehnder interferometer
• Probing an excited-state atomic transition using hyperfine quantum beat spectroscopy
• Interplay between electromagnetically induced transparency(EIT), absorption (EIA) and Autler-Townes (AT) splitting in N-type atomic system: An experiment and theory
• Nature of interference between Autler-Townes peaks in multi-level system
• Coupling field dependent quantum interference effects in a $\Lambda$-system of ${}^{87}Rb$ atom
• Polarization-rotation resonances with subnatural widths using a control laser
• Mirrorless optical parametric oscillator inside an all-optical waveguide
• Observation of electromagnetically induced absorption in a vee + ladder system