Physical Review A

Electromagnetically induced absorption

A. Lezama, S. Barreiro, A. M. Akulshin

Published Jun 1, 1999• 375 citations

Abstract

A large increase in atomic absorption due to coherent interaction with resonant radiation is predicted for a closed transition between two degenerate atomic levels verifying $0<{F}_{g}<{F}_{e}{(F}_{g}$ and ${F}_{e}$ are the total angular momentum of the ground and the excited levels, respectively). In good agreement with the theoretical prediction, a total absorption enhancement by a factor 1.7 was obtained on the ${D}_{2}$ line of ${}^{85}\mathrm{Rb}\mathrm{}$ in a vapor cell experiment.

DOI: 10.1103/physreva.59.4732

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Physical Review A

Electromagnetically induced absorption

A. Lezama, S. Barreiro, A. M. Akulshin

Published Jun 1, 1999• 375 citations

Publisher

Abstract

A large increase in atomic absorption due to coherent interaction with resonant radiation is predicted for a closed transition between two degenerate atomic levels verifying

0<{F}_{g}<{F}_{e}{(F}_{g}

and

{F}_{e}

are the total angular momentum of the ground and the excited levels, respectively). In good agreement with the theoretical prediction, a total absorption enhancement by a factor 1.7 was obtained on the

{D}_{2}

line of

{}^{85}\mathrm{Rb}\mathrm{}

in a vapor cell experiment.

DOI: 10.1103/physreva.59.4732

Related papers

Coherent two-field spectroscopy of degenerate two-level systems

A. Lezama, S. Barreiro, A. Lipsich +1 more

Spectroscopic features revealing the coherent interaction of a degenerate two-level atomic system with two optical fields are examined. A model for the numerical calculation of the response of a degenerate two-level system to the action of an arbitrarily intense resonant pump field and a weak probe in the presence of a magnetic field is presented. The model is valid for arbitrary values of the total angular momentum of the lower and upper levels and for any choice of the polarizations of the optical waves. Closed and open degenerate two-level systems are considered. Predictions for probe absorption and dispersion, field generation by four-wave mixing, population modulation, and Zeeman optical pumping are derived. On all these observables, subnatural-width coherence resonances are predicted and their spectroscopic features are discussed. Experimental spectra for probe absorption and excited-state population modulation in the ${D}_{2}$ line of Rb vapor are presented in good agreement with the calculations.Spectroscopic features revealing the coherent interaction of a degenerate two-level atomic system with two optical fields are examined. A model for the numerical calculation of the response of a degenerate two-level system to the action of an arbitrarily intense resonant pump field and a weak probe in the presence of a magnetic field is presented. The model is valid for arbitrary values of the total angular momentum of the lower and upper levels and for any choice of the polarizations of the optical waves. Closed and open degenerate two-level systems are considered. Predictions for probe absorption and dispersion, field generation by four-wave mixing, population modulation, and Zeeman optical pumping are derived. On all these observables, subnatural-width coherence resonances are predicted and their spectroscopic features are discussed. Experimental spectra for probe absorption and excited-state population modulation in the ${D}_{2}$ line of Rb vapor are presented in good agreement with the calculations.

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Coherent two-field spectroscopy of degenerate two-level systems

A. Lezama

Spectroscopic features revealing the coherent interaction of a degenerate two-level atomic system with two optical fields are examined. A model for the numerical calculation of the response of a degenerate two-level system to the action of an arbitrarily intense resonant pump field and a weak probe in the presence of a magnetic field is presented. The model is valid for arbitrary values of the total angular momentum of the lower and upper levels and for any choice of the polarizations of the optical waves. Closed and open degenerate two-level systems are considered. Predictions for probe absorption and dispersion, field generation by four-wave-mixing, population modulation and Zeeman optical pumping are derived. On all these observables, sub-natural-width coherence resonances are predicted and their spectroscopic features are discussed. Experimental spectra for probe absorption and excited state population modulation in the D2 line of Rb vapor are presented in good agreement with the calculationsSpectroscopic features revealing the coherent interaction of a degenerate two-level atomic system with two optical fields are examined. A model for the numerical calculation of the response of a degenerate two-level system to the action of an arbitrarily intense resonant pump field and a weak probe in the presence of a magnetic field is presented. The model is valid for arbitrary values of the total angular momentum of the lower and upper levels and for any choice of the polarizations of the optical waves. Closed and open degenerate two-level systems are considered. Predictions for probe absorption and dispersion, field generation by four-wave-mixing, population modulation and Zeeman optical pumping are derived. On all these observables, sub-natural-width coherence resonances are predicted and their spectroscopic features are discussed. Experimental spectra for probe absorption and excited state population modulation in the D2 line of Rb vapor are presented in good agreement with the calculations

arXiv:quant-ph/9907002Jul 1, 19990 citations

Observation of electromagnetically induced transparency and electromagnetically induced absorption in warm Rb vapor using a single linearly polarized laser

Samir Bali, Peter Harnish, Eric Williams

APSMar 1, 20100 citations

Inhibition of electromagnetically induced absorption due to excited-state decoherence in Rb vapor

H. Failache, Paulo Valente, G. Ban +2 more

The explanation presented by Taichenachev et al. [Phys. Rev. A $61,$ 011802 (2000)] according to which the electromagnetically induced absorption (EIA) resonances observed in degenerate two-level systems are due to coherence transfer from the excited to the ground state is experimentally tested in a Hanle-type experiment observing the parametric resonance on the $D1$ line of ${}^{87}\mathrm{Rb}.$ While EIA occurs in the $F=\stackrel{\ensuremath{\rightarrow}}{1}{F}^{\ensuremath{'}}=2$ transition in a cell containing only Rb vapor, collisions with a buffer gas (30 torr of Ne) cause the sign reversal of this resonance as a consequence of collisional decoherence of the excited state. A theoretical model in good qualitative agreement with the experimental results is presented.The explanation presented by Taichenachev et al. [Phys. Rev. A $61,$ 011802 (2000)] according to which the electromagnetically induced absorption (EIA) resonances observed in degenerate two-level systems are due to coherence transfer from the excited to the ground state is experimentally tested in a Hanle-type experiment observing the parametric resonance on the $D1$ line of ${}^{87}\mathrm{Rb}.$ While EIA occurs in the $F=\stackrel{\ensuremath{\rightarrow}}{1}{F}^{\ensuremath{'}}=2$ transition in a cell containing only Rb vapor, collisions with a buffer gas (30 torr of Ne) cause the sign reversal of this resonance as a consequence of collisional decoherence of the excited state. A theoretical model in good qualitative agreement with the experimental results is presented.

arXiv:quant-ph/0211065Physical Review AApr 15, 200361 citations

Unexpected magneto-optical resonances in coherent atomic media

A. M. Akulshin, A. I. Sidorov, P. McLean +1 more

Jan 1, 20050 citations

A large increase in atomic absorption due to coherent interaction with resonant radiation is predicted for a closed transition between two degenerate atomic levels verifying

0<{F}_{g}<{F}_{e}{(F}_{g}

and

{F}_{e}

{D}_{2}

line of

{}^{85}\mathrm{Rb}\mathrm{}

in a vapor cell experiment.

{D}_{2}

line of Rb vapor are presented in good agreement with the calculations.

The explanation presented by Taichenachev et al. [Phys. Rev. A

61,

011802 (2000)] according to which the electromagnetically induced absorption (EIA) resonances observed in degenerate two-level systems are due to coherence transfer from the excited to the ground state is experimentally tested in a Hanle-type experiment observing the parametric resonance on the

D1

line of

{}^{87}\mathrm{Rb}.

While EIA occurs in the $F=\stackrel{\ensuremath{\rightarrow}}{1}{F}^{\ensuremath{'}}=2$ transition in a cell containing only Rb vapor, collisions with a buffer gas (30 torr of Ne) cause the sign reversal of this resonance as a consequence of collisional decoherence of the excited state. A theoretical model in good qualitative agreement with the experimental results is presented.