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Journal of Experimental and Theoretical Physics Letters

Use of electromagnetically induced transparency for measurement of superhyperfine splitting of the levels of rare-earth metals doped in optical crystals

Ахмеджанов Ринат Абдулхаевич, A. A. Bondartsev, Л. А. Гущин, N. A. Zharova

Published Jan 1, 2008• 1 citation
Publisher

Abstract

The results of experimental and theoretical investigations of the electromagnetically induced transparency regime on the 4 I 9/2-4 G 5/2 transition in Nd3+ ions doped in LaF3 are presented. The superhyperfine splitting of the upper and lower working levels has been determined on the basis of the results obtained. A theoretical model adequately describing the parameters of the resonances of electromagnetically induced transparency has been developed by analyzing the experimental data.

DOI
10.1134/s0021364007210023

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The results of experimental and theoretical investigations of the electromagnetically induced transparency regime on the 4 I 9/2-4 G 5/2 transition in Nd3+ ions doped in LaF3 are presented. The superhyperfine splitting of the upper and lower working levels has been determined on the basis of the results obtained. A theoretical model adequately describing the parameters of the resonances of electromagnetically induced transparency has been developed by analyzing the experimental data.
The results of experimental and numerical investigations of electromagnetically induced transparency in a Pr 3+ :LaF 3 crystal have been presented. A spectrally isolated Λ system has been made of a specially prepared medium of an ensemble of particles with an inhomogeneous width less than the hyperfine splitting of both upper and lower operating levels. A considerable increase in the transmittance with respect to an unprepared medium has been demonstrated. It has been shown that, under the experimental conditions, the transmittance is limited by the apparatus (spread of the transmission peak by the instrumental linewidth specified by the probe pulse length).
Using the density matrix theory of interaction between light and matter, and relevant parameters of the relaxation rates for a six-level model, we have shown theoretically the possibility of realizing Electromagnetically Induced Transparency (EIT) and Slow Light effects in Pr(+3 ion) doped YSO crystal. In addition, we have presented a simplified method to analyse EIT effect in such a six level atomic system. Finally, we have demonstrated results of numerical calculation and have compared them with experimental measurements reported recently.