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ELECTROMAGNETICALLYINDUCEDABSORPTIONINAN ELLIPTICALLY POLARIZEDLIGHTFIELD

Denis V. Brazhnikov, А. В. Тайченачев, Anatolii M Tumaikin, Valeriy I. Yudin, Sergei A. Zibrov, Yaroslav O. Dudin, Vladimir L Velichansky, Michael G. Noppe

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

induced absorption (EIA)inHanleconfiguration versus ellipticity ofan optical running waveisinvestigated. Alltheoretical results areconfirmed experimentally quite well. Itisshownthat magneto-optical resonance parameters (amplitude, width andamplitude-towidthratio) dependonthewavepolarization substantially. Forexample, theresonance amplitude inthecaseofelliptic polarization ofthelight wavecanbetheorder morethanfor linear polarization.

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Electromagnetically Induced Absorption in an Elliptically Polarized Light Field

Denis V. Brazhnikov, A. V. Taichenachev, Anatolii M Tumaikin +4 more

Electromagnetically induced absorption (EIA) in Hanle configuration versus ellipticity of an optical running wave is investigated. All theoretical results are confirmed experimentally quite well. It is shown that magneto-optical resonance parameters (amplitude, width and amplitude-to-width ratio) depend on the wave polarization substantially. For example, the resonance amplitude in the case of elliptic polarization of the light wave can be the order more than for linear polarization.

International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering (APEIE)•Sep 1, 2006•0 citations

Magneto-optical resonances in elliptically polarized light field

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Electromagnetically induced absorption (EIA) in Hanle configuration versus ellipticity of an optical running wave is investigated. All theoretical results are confirmed experimentally quite well. It is shown that magneto-optical resonance parameters (amplitude, width and amplitude-to-width ratio) depend on the wave polarization substantially. For example, the rsonance amplitude in the case of elliptic polarization of th elight wave can be the order more than for linear polarization.

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Electromagnetically induced absorption (EIA) in Hanle configuration versus ellipticity of an optical running wave is investigated. All theoretical results are confirmed experimentally quite well. It is shown that magneto-optical resonance parameters (amplitude, width and amplitude-to-width ratio) depend on the wave polarization substantially. For example, the resonance amplitude in the case of elliptic polarization of the light wave can be the order more than for linear polarization.

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Outside of the perturbation theory for bichromatic field of two co-propagating elliptically polarized waves, the type of the subnatural (electromagnetically induced transparency (EIT) or absorption (EIA)) resonance is theoretically found to determined only by the angular momenta of the ground (Fg) and the excited (Fe) states of atomic gas. Herewith, the spontaneous transfer of anisotropy from the excited state to the ground one leads to the formation of the EIA resonance at the transition Fg= F → Fe= F + 1.

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Features of Magneto-Optical Resonances in an Elliptically Polarized Traveling Light Wave

Denis V. Brazhnikov, A. V. Taǐchenachev, Anatolii M Tumaikin +5 more

The parameters of nonlinear absorption magneto-optical resonances in the Hanle configuration have been studied as functions of the ellipticity of a traveling light wave. It has been found that these parameters (amplitude, width, and amplitude-to-width ratio) depend strongly on the polarization of the light wave. In particular, the resonance amplitude can increase by more than an order of magnitude when the polarization changes from linear to optimal elliptic. It has been shown that this effect is associated with the Doppler frequency shift for atoms in a gas. The theoretical results have been corroborated in experiments in Rb vapor.

•Oct 9, 2006•21 citations
induced absorption (EIA)inHanleconfiguration versus ellipticity ofan optical running waveisinvestigated. Alltheoretical results areconfirmed experimentally quite well. Itisshownthat magneto-optical resonance parameters (amplitude, width andamplitude-towidthratio) dependonthewavepolarization substantially. Forexample, theresonance amplitude inthecaseofelliptic polarization ofthelight wavecanbetheorder morethanfor linear polarization.
Using the (2)S(1/2)F(g) = 2 --> (2)P(3/2)F(e) = 3 transition in (87)Rb vapor at room temperature, we study effect of the laser light polarization on the electromagnetically induced absorption (EIA). This work extends the recent study of the behavior of the EIA as a function of the laser ellipticity (Brazhnikov et. al., JETP Lett. 83, 64, 2006). We have shown that such behavior strongly depends on the laser power. For the low laser power EIA amplitude has maximum for linearly polarized light, while for high laser power elliptically polarized light of ellipticity 15-20 degrees generates maximum of the EIA amplitude. EIA width varies slowly with the laser ellipticity at lower laser power, and much stronger at higher laser power. Through our theoretical model we attributed observed results to combined effect of the laser ellipticity and power on the population of ground state Zeeman sublevels.
Outside of the perturbation theory for bichromatic field of two co-propagating elliptically polarized waves, the type of the subnatural (electromagnetically induced transparency (EIT) or absorption (EIA)) resonance is theoretically found to determined only by the angular momenta of the ground (Fg) and the excited (Fe) states of atomic gas. Herewith, the spontaneous transfer of anisotropy from the excited state to the ground one leads to the formation of the EIA resonance at the transition Fg= F → Fe= F + 1.
The parameters of nonlinear absorption magneto-optical resonances in the Hanle configuration have been studied as functions of the ellipticity of a traveling light wave. It has been found that these parameters (amplitude, width, and amplitude-to-width ratio) depend strongly on the polarization of the light wave. In particular, the resonance amplitude can increase by more than an order of magnitude when the polarization changes from linear to optimal elliptic. It has been shown that this effect is associated with the Doppler frequency shift for atoms in a gas. The theoretical results have been corroborated in experiments in Rb vapor.