Zeeman Coherences Narrowing due to Ramsey Effects Induced by Thermal Motion of Rubidium Atoms
Z.D. Grujić, M.M. Mijailović, B.M. Panić, M. Minić, A.G. Kovačević, M. Obradović, B.M. Jelenković
Institute of Physics, Pregrevica 118, 11080 Belgrade, Serbia
and S. Cartaleva
Institute of Electronics, Bulgarian Academy of Sciences, blvd. Tzarigradsko Shaussee 72, 1784 Sofia, Bulgaria
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Received: 3 09 2007;
We investigated effects of spatially separated laser fields on amplitudes and widths of electromagnetically induced transparency in M-type atomic system. We have shown narrowing of the electromagnetically induced transmission resonance and therefore enhancement of medium non-linearities that can be explained by diffusion-induced Ramsey narrowing. Depending on the polarization of two laser beams, narrow probe Hanle transmission resonance changes its sign in respect of the profile obtained when the pump laser beam is off.
DOI: 10.12693/APhysPolA.112.799
PACS numbers: 42.50.Gy, 32.70.Jz