Splitting of electromagnetically induced transparency under strong-probe conditions due to Doppler averaging

Pandey, Kanhaiya and Natarajan, Vasant (2008) Splitting of electromagnetically induced transparency under strong-probe conditions due to Doppler averaging. In: Journal of Physics B: Atomic, Molecular and Optical Physics, 41 (18). pp. 185504-1.

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Abstract

We study the phenomenon of electromagnetically induced transparency (EIT) in room-temperature Rb vapour under conditions of a strong probe laser. The atoms form a ladder system with the lower transition coupled by the probe laser and the upper transition coupled by the control laser. Density-matrix analysis of the system shows that, for zero-velocity atoms, the strong probe beam causes a reduction in absorption and broadening of the profile. But the lineshape after thermal averaging shows a splitting of the EIT resonance and enhanced absorption near line centre. The experimental observations in $^{85}Rb$ agree qualitatively with the predicted lineshapes.

Item Type:	Journal Article
Publication:	Journal of Physics B: Atomic, Molecular and Optical Physics
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	06 Oct 2008 10:01
Last Modified:	19 Sep 2010 04:51
URI:	http://eprints.iisc.ac.in/id/eprint/16174

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