Polarization-dependent tuning of the Hanle effect in the ground state of Cs

Ravi, Harish and Bhattarai, Mangesh and Bharti, Vineet and Natarajan, Vasant (2017) Polarization-dependent tuning of the Hanle effect in the ground state of Cs. In: EPL, 117 (6).

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Abstract

We demonstrate that the Hanle effect can be tuned between magnetically induced absorption (MIA) and magnetically induced transmission (MIT) simply by changing the polarization of the input laser beam. The experiments are done using closed hyperfine transitions of the D-2 line of Cs-133 - Fg = 3 -> F-e = 2 and F-g = 4 -> Fe = 5. The former shows a transformation from MIT to MIA, while the latter shows the opposite behavior. A qualitative explanation based on optical pumping and coherences among the magnetic sublevels of the ground state is borne out by a detailed density- matrix calculation. To increase the coherence time, the experiments are done in a C-s vapor cell with paraffin coating on the walls. The observed linewidth is extremely narrow (similar to 0.1mG) compared to previous work in this area, making this a promising technique for all kinds of precision measurements. Copyright (C) EPLA, 2017

Item Type:	Journal Article
Publication:	EPL
Additional Information:	Copy right for this article belongs to the EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY, 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	15 Jul 2017 07:17
Last Modified:	15 Jul 2017 07:17
URI:	http://eprints.iisc.ac.in/id/eprint/57407

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